Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:33Z No. of bitstreams: 5 28.pdf: 596682 bytes, checksum: c60fee0c05c0fc8e8692627652f61d10 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:08:03Z (GMT) No. of bitstreams: 5 28.pdf: 596682 bytes, checksum: c60fee0c05c0fc8e8692627652f61d10 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:08:03Z (GMT). No. of bitstreams: 5 28.pdf: 596682 bytes, checksum: c60fee0c05c0fc8e8692627652f61d10 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2010 / A batata-doce (Ipomoea batatas (L.)), esp?cie pertencente ? fam?lia Convolvulaceae, ? uma planta r?stica, cultivada principalmente por pequenos produtores. Apesar de ser uma das oler?colas mais cultivada no Brasil e apresentar grande potencial de uso na alimenta??o humana, animal e industrial, tem sido pouco estudada. O objetivo deste trabalho foi identificar clones superiores e avaliar a produ??o e a qualidade de ra?zes, ramas e silagem de ramas de clones de batata-doce em diferentes ?pocas de colheita e ambientes de cultivo. Foi realizado um experimento no Campus II e outro na Fazenda Forquilha, ambos localizados no munic?pio de Diamantina-MG, com tr?s ?pocas de colheita. Foram avaliados nas ra?zes tuberosas: a produtividade total, produtividade comercial, peso m?dio total, peso m?dio comercial, resist?ncia a insetos de solo, formato de ra?zes, prote?na bruta, fibra bruta, cinzas, amido, compostos fen?licos e herdabilidade. Na parte a?rea foi avaliado a produtividade de mat?ria verde, teor de mat?ria seca, produtividade de mat?ria seca, prote?na bruta e fibra bruta. Foi feito silagem das ramas aos 150 dias ap?s a colheita na Fazenda Forquilha, onde foi analisado prote?na bruta, FDA, FDN, NDT, pH, mat?ria seca, hemicelulose e nitrog?nio amoniacal em rela??o ao nitrog?nio total. Atrav?s dos resultados apresentados, percebe-se que Os clones BD-25, BD-38 e BD-45, na Fazenda Forquilha, apresentaram as maiores produtividade totais e comercial de ra?zes e devem ser colhidas mais tardiamente. A Fazenda Forquilha foi o local onde os clones de batata-doce apresentaram, em m?dia, as maiores produtividades totais e comercial de ra?zes e os maiores pesos m?dios de ra?zes total e comercial. As menores notas para formato de ra?zes foram obtidas nas colheitas mais precoces. Os teores de prote?na bruta, fibra bruta, cinzas e amido, na mat?ria seca de ra?zes, n?o foram influenciados pelos ambientes de cultivo. Para obten??o de maiores produtividades de mat?ria verde e mat?ria seca, as ramas devem ser colhidas at? 150 dias ap?s o plantio. Na Fazenda Forquilha foram obtidas as maiores produtividades de mat?ria verde e mat?ria seca das ramas. Os teores de mat?ria seca nas ramas aumentam com o ciclo da cultura. As ramas de batata-doce apresentam potencial de utiliza??o na alimenta??o animal, tanto na forma fresca como na forma de silagem. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2009. / ABSTRACT The sweet potato (Ipomoea batatas (L.)), species belonging to the family Convolvulaceae, is a rustic plant, grown mainly by small producers. Despite being one of most vegetables grown in Brazil and show great potential for use in food, animal and industrial, have been little studied. The objective was to identify superior clones and assess the production and quality of roots, stems and branches of silage from sweet potato clones in different harvesting periods and environments of cultivation. An experiment was conducted on campus and another on Farm II forks, both located in the city of Diamantina-MG with three seasons of harvest. Roots were evaluated in the total yield, commercial yield, total weight, weight commercial, insect resistance of soil, shape of roots, crude protein, crude fiber, ash, starch, phenolic compounds and heritability. In shoots was evaluated the yield of green matter, dry matter yield of dry matter, crude protein and crude fiber. Silage was made of branches to 150 days after harvest at Farm forks, where it was considered crude protein, ADF, NDF, TDN, pH, dry matter, hemicellulose and ammonia nitrogen in relation to total nitrogen. The results presented, we find that the BD-25 clones, and BD-38 BD-45, at Farm forks, submitted the highest total and commercial yield of roots and should be harvested later. The Farm was the fork where the sweet potato clones showed, I mean, the highest total and commercial yields of roots and the highest average weight of roots and total trade. The lowest notes to format roots were in earlier harvests. The crude protein, crude fiber, ash and starch in dry matter of roots were not influenced by the environment of cultivation. To obtain higher yields of green matter and dry, the stems should be harvested up to 150 days after planting. Farm forks were obtained in the highest yield of green matter and dry matter of branches. The dry matter in branches increased with the crop cycle. The stems of sweet potato, have potential for use in animal feed, both as fresh and as silage.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-06-29T18:08:03Z No. of bitstreams: 1 2016 - Ludmila Fonseca da Silva.pdf: 1290374 bytes, checksum: 2950cbb22126528652a8aea1506c78b4 (MD5) / Made available in DSpace on 2017-06-29T18:08:03Z (GMT). No. of bitstreams: 1 2016 - Ludmila Fonseca da Silva.pdf: 1290374 bytes, checksum: 2950cbb22126528652a8aea1506c78b4 (MD5) Previous issue date: 2016-02-26 / CAPES / Crambe (Crambe abyssinica Hochst) is a fall/winter crop in Brazil, short-cycle, drought-tolerant and low temperatures tolerant, recycling of nutrients, crop rotation participant and their seeds have high oil content. Thus, crambe is presented as an alternative to biodiesel production and allows the inclusion of small and medium producers in its production. Studies have shown the positive effect of potassium fertilization on crambe seed productivity, and the importance of determining the proper harvest time, to ensure maximum seed quality, avoid productivity losses and possible infections. The objective was to evaluate the yield and physiological quality of crambe seeds in response to potassium fertilization and different harvest times. An experiment under field conditions was installed in 2013 and this was repeated in 2014, using a split plot design, potassium fertilization as main plots (0, 15, 30, 60 and 90 kg K2O ha-1) and three harvest times as subplots. At each harvest, there were evaluated the seed production, production components for crambe plant, seed yield and plant morphological characteristics. In the laboratory, the seeds produced were submitted to evaluations of germination and vigor (first count, electrical conductivity and accelerated aging), a month after harvest and after six months of storage in a dry chamber (18?C and 45% RH). By the results it was concluded that in 2013, potassium fertilization and harvest time did not favored the dry matter of aerial part, the number of branches per plant, the number of seeds per plant, the mass of 100 seeds and the seed yield. In 2014, the plants fertilized with 90 kg K2O ha-1 in the first and second harvest time, 88 and 95 days after sowing (DAS) showed a higher seed number and yield per plant, as well as higher weight of 100 seeds. The contribution of seed production in the main stem was higher when the crop was harvested after 85 DAS in 2013 and, at 88 and 95 DAS in 2014 obtained with the dose of 90 kg K2O ha-1 . Seeds harvested in the third time, when evaluated after harvest (initial evaluation), had lower germination without treatment to overcome dormancy, regardless of potassium fertilization, in both years of cultivation, indicating that the seeds had reached physiological maturity and the mechanisms to overcome dormancy were already present. After six months of storage, crambe seed harvested in the third time had higher germination, without treatment to overcome dormancy, regardless of potassium fertilization in both crops. / O crambe (Crambe abyssinica Hochst) ? uma cultura de outono/inverno no Brasil, de ciclo curto, tolerante ? seca e a temperaturas baixas, recicladora de nutrientes, participante de rota??o de culturas e, suas sementes possuem elevado teor de ?leo. Assim, o crambe se apresenta como uma alternativa produ??o de biodiesel e permite a inclus?o de pequenos e m?dios produtores na sua produ??o. Estudos demonstram o efeito positivo da aduba??o pot?ssica na produtividade de sementes de crambe e, a import?ncia da determina??o da ?poca de colheita adequada, para assegurar m?xima qualidade fisiol?gica das sementes, evitar perdas de produtividade e poss?veis infec??es. O objetivo foi o de avaliar a produ??o e qualidade fisiol?gica de sementes de crambe em resposta a aduba??o pot?ssica e diferentes ?pocas de colheita. Foi instalado um experimento em campo no ano de 2013 e repetido em 2014, adotando o delineamento experimental em parcela subdividida, com quatro repeti??es, sendo as parcelas representadas pela aduba??o pot?ssica (0, 15, 30, 60 e 90 kg K2O ha-1) e as subparcelas pelas tr?s ?pocas de colheita. Foram avaliados a cada colheita, a produ??o por planta, os componentes de produ??o por planta de crambe, a produtividade das sementes e, as caracter?sticas morfol?gicas destas plantas. Em laborat?rio, as sementes produzidas foram submetidas ?s avalia??es da germina??o e do vigor (primeira contagem, condutividade el?trica e envelhecimento artificial), um m?s ap?s a colheita e ap?s seis meses de armazenamento em c?mara seca (18?C e 45% UR). Pelos resultados, pode-se concluir que em 2013, a aduba??o pot?ssica e a ?poca de colheita n?o favoreceram a massa de mat?ria seca de parte a?rea, o n?mero de ramos por planta, o n?mero de sementes por planta a massa de 100 sementes, bem como a produtividade de sementes. Em 2014, as plantas adubadas com 90 kg K2O ha-1 e colhidas nas primeiras e segundas ?pocas, aos 88 e 95 dias ap?s a semeadura (DAS) apresentaram maior n?mero e produ??o de sementes por planta, bem como maior massa de 100 sementes. A contribui??o da produ??o de sementes da haste principal foi maior quando a colheita foi realizada aos 85 DAS em 2013 e, aos 88 e 95 DAS (primeira e segunda colheita) em 2014, obtidas com a dose de 90 kg de K2O ha-1. Em rela??o ? qualidade fisiol?gica, as sementes colhidas na terceira ?poca, quando avaliadas ap?s a colheita (avalia??o inicial), apresentaram menor germina??o, sem tratamento para supera??o de dorm?ncia, independente da aduba??o pot?ssica, nos dois anos de cultivo, indicando que as sementes j? tinham atingido a maturidade fisiol?gica e que os mecanismos de supera??o de dorm?ncia j? estavam presentes. Ap?s seis meses de armazenamento, as sementes de crambe colhidas na terceira ?poca apresentaram maior germina??o, sem tratamento para supera??o de dorm?ncia, independente da aduba??o pot?ssica nos dois cultivos.

Made available in DSpace on 2014-12-17T14:53:22Z (GMT). No. of bitstreams: 1 EvansPCF.pdf: 502406 bytes, checksum: 731a5fcf30aeb3b5c6356834c2baf4d9 (MD5) Previous issue date: 2006-05-19 / The objective of this thesis is to study the theory of production as it relates to and focuses on the strategy of production and competitiveness. The theory utilized was based on Terry Hill s Strategies through the utilization of Matrix of Manufacturing Strategy Issues and supported by the studies of others in this area. The methodology used for the development of this study was based on observing the engagement between two companies over a long period of time. Through interviews and discussions it was possible to collect the necessary information to guide this study; and by constant involvement in each of these companies, their ways of thinking, performing and administrating were observed and understood. In conclusion, this work created an understanding of the importance of the strategy of production, not as the only important element but as an important factor to direct attitudes and decisions in the company under the concept of strategy and competitiveness / Este trabalho tem como objetivo estudar a teoria da produ??o ao que se refere ? estrat?gia de produ??o e competitividade com ?tica voltada em estrat?gia de produ??o focada. A teoria ora utilizada foi baseada nos entendimentos estrat?gicos de Terry Hill atrav?s da utiliza??o da Matriz de An?lise Estrat?gica Produ??o-Mercado, e suportada por outros estudiosos da ?rea. Para o desenvolvimento foi utilizada uma metodologia de estudo de caso onde houve um engajamento de longo per?odo dentro de cada uma das duas empresas. Atrav?s de entrevistas e discuss?es foi poss?vel colher informa??es necess?rias para direcionar o trabalho e por atua??o direta e constante dentro de cada uma das empresas foi absorvida e entendida a metodologia e forma de pensar, agir e administrar de cada uma delas. Por fim conclui-se este trabalho entendendo a necessidade de dar import?ncia ? estrat?gia de produ??o focada, n?o como elemento ?nico, mas como algo a mais, como fator direcionador das atitudes nas diretrizes e nas decis?es dentro da empresa, tendo por base o conceito de estrat?gia e competitividade

Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2016-12-21T10:19:13Z No. of bitstreams: 1 DIS_JOAO_HENRIQUE_SANTOS_DA_SILVA_COMPLETO.pdf: 5130940 bytes, checksum: 18485a754caffe62f144b98b71b805c3 (MD5) / Made available in DSpace on 2016-12-21T10:19:14Z (GMT). No. of bitstreams: 1 DIS_JOAO_HENRIQUE_SANTOS_DA_SILVA_COMPLETO.pdf: 5130940 bytes, checksum: 18485a754caffe62f144b98b71b805c3 (MD5) Previous issue date: 2016-07-29 / Brazil has a major plant genetic diversity of the world, consisting of a complex of more than 2 million different species, and therefore a potential for developing country process applied to natural products. The means of production, economic viability and the resources used in the market are gaps to be filled by this sector in order to reach a new level in the international arena. In the organizational context there is great interest in reliable data, as well as concern in generating correct information that also are designed to allow openness to new investment opportunities with relevant important market. It is in this constant process of improving the quality of productivity systems, particularly for the development of new techniques that can be standardized in the search for better results, that mathematical models offer an important advantage, enabling safety aspects in production, exploring the unique features each type of input and making more accurate identification and verification process, with the purpose of result profitability increases and lower costs. Inserted in this scenario, this research seeks to develop a solution in financial and economic model that can add quality and safety in getting better results in extraction processes, by developing a computational tool to estimate cost and price of an essential oil obtained by drag steam. The information generated by the model are intended to verify the performance of three different types of plants: citronella (Cymbopogon winterianus), lemongrass (Cymbopogon citratus) and long pepper (Piper hispidinervum). This software, where the mathematical model was implemented, economic and financial performance of the essential oils extraction process by steam distillation, highlighting what parameters and results are recommended for each plant species evaluated. To achieve the main research objectives were used two combined methodological tools: operational research (adopting the linear programming technique), with a focus on defining a profit maximization objective function and the multi-criteria analysis technique for making investment decisions combining with the methods of Analytic Hierarchy Process (AHP) and Commitment Schedule. The results obtained using the methodology presented maximizing profits for the simulation of long pepper production process (Piper hispidinervum), there was an increase in sales revenue in the order of 2.9% from R$ 226,226.88 to R$ 233,012, 74, with essential oil selling price of long pepper estimated at R $ 214.32 (two hundred and fourteen reais and thirty two cents) and the reference price of 1 liter of hydrolate was R$ 32.13 (20% of the essential oil sales value of long pepper). The decision-making simulations that compared both economic performance, and the production had the kind of citronella as the best economic performance with performance share of 28.50% (0.2850), with the long pepper species 31 12% (0.3112) and capim lemon 40.37% (0.4037) in second and third respectively as the logic of this model. In the production process of the kind of approach Lemongrass obtained the best position with 32.59% performance dimension (0.3259), followed by long pepper 33.50% (0.3349) and Citronella 33.91 % (0.3391) in the last position. The two simulations showed interesting results, under the economic approach species long and Lemongrass pepper need to improve their indicative in relation to the kind of Citronella, since the simulation of production processes all species have very similar results, and thus can be interpreted as a possible technical tie. / O Brasil possui uma das maiores diversidades gen?ticas vegetais do mundo, consistindo em uma complexidade de mais de 2 milh?es de esp?cies distintas, sendo, portanto, um pa?s potencial para o desenvolvimento de processos aplicados a produtos naturais. Os meios de produ??o, a viabilidade econ?mica e os recursos empregados no mercado s?o lacunas que devem ser preenchidas por este setor para que se alcance um novo patamar no cen?rio internacional. No contexto organizacional h? grande interesse em dados fidedignos, bem como a preocupa??o na gera??o de informa??es corretas que, tamb?m, visam possibilitar abertura para novas oportunidades de investimento com relevante import?ncia de mercado. ? neste constante processo de melhoria na qualidade dos sistemas de produtividade, sobretudo para o desenvolvimento de novas t?cnicas que possam ser padronizadas na busca de melhores resultados, que os modelos matem?ticos oferecem um diferencial importante, possibilitando aspectos de seguran?a na produ??o, explorando as caracter?sticas ?nicas que cada tipo de insumo e tornando mais acurada a identifica??o e verifica??o de processo, com fins de resultar aumentos de lucratividade e diminui??o de custos. Inserida neste cen?rio, esta pesquisa busca desenvolver uma solu??o em modelo econ?mico financeiro que possa agregar qualidade e seguran?a na obten??o de melhores resultados em processos de extra??o, mediante o desenvolvimento de uma ferramenta computacional que estime custo e pre?o de um ?leo essencial obtido por arraste a vapor. As informa??es geradas pelo modelo t?m o objetivo de verificar o desempenho de tr?s diferentes tipos de plantas: citronela (Cymbopogon winterianus), capim-lim?o (Cymbopogon citratus) e pimenta longa (Piper hispidinervum). Este software, onde o modelo matem?tico foi implantado, estima o desempenho econ?mico e financeiro do processo de extra??o de ?leos essenciais por arraste a vapor, destacando quais os par?metros e resultados s?o recomendados para cada esp?cie vegetal avaliada. Para atingir os principais objetivos de pesquisa foram utilizadas duas ferramentas metodol?gicas conjugadas: a pesquisa operacional (adotando a t?cnica de programa??o linear), com foco em definir uma fun??o objetivo de maximiza??o de lucros e a t?cnica de an?lise multicriterial para a tomada de decis?o de investimentos, combinando com os m?todos de Processo Anal?tico Hier?rquico (AHP) e Programa??o de Compromisso. Os resultados obtidos atrav?s da metodologia apresentaram a maximiza??o e lucro referente a simula??o do processo de produ??o de pimenta longa (Piper hispidinervum), houve aumento na receita de vendas na ordem de 2,9% passando de R$ 226.226,88 para R$ 233.012,74 , com pre?o de venda de ?leo essencial de pimenta longa estimado em R$ 214,32 (duzentos e quatorze reais e trinta e dois centavos) bem como a refer?ncia de pre?o de 1 litro de hidrolato foi de R$ 32,13 (20% do valor de venda de ?leo essencial de pimenta longa). As simula??es de tomada de decis?o que compararam tanto o desempenho econ?mico, quanto o de produ??o apresentaram a esp?cie de Citronela como a de melhor desempenho econ?mico com cota de desempenho de 28,50% (0,2850), com as esp?cies de pimenta longa 31,12 % (0,3112) e capim-lim?o 40,37% (0,4037) em segundo e terceira posi??o respectivamente conforme a l?gica deste modelo. Na abordagem de processo de produ??o a esp?cie de Capim-lim?o obteve a melhor posi??o com cota de desempenho de 32,59% (0,3259), seguida de Pimenta longa 33,50 % (0,3349) e Citronela de 33,91% (0,3391) na ?ltima posi??o. As duas simula??es apresentaram resultados interessantes, sob a abordagem econ?mica as esp?cies de Pimenta longa e Capim-lim?o precisam melhorar seus indicativos em rela??o ? esp?cie de Citronela, j? na simula??o de processos de produ??o todas as esp?cies apresentam resultados muito parecidos, e assim podem ser interpretados como um poss?vel empate t?cnico.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-01-31T16:50:00Z No. of bitstreams: 1 2016 - Bruna Caroline Franzan.pdf: 2183556 bytes, checksum: 2e937393a56f483356ba48da8c23210a (MD5) / Made available in DSpace on 2018-01-31T16:50:00Z (GMT). No. of bitstreams: 1 2016 - Bruna Caroline Franzan.pdf: 2183556 bytes, checksum: 2e937393a56f483356ba48da8c23210a (MD5) Previous issue date: 2016-07-22 / CAPES / This study aimed to evaluate the feces of horses as an inoculum source to apply to in vitro fermentation tests when roughage is used as the substrate. The design was completely randomized in a 2x2 factorial arrangement. The first factor is hydration time of the substrate: 0 and 12 hours; and the second factor evaluated was the feces dilution with nutritive solution (weight: weight): 1:1 and 1:3. The variables cumulative gas production and degradation of nutrients the design was completely randomized in split plots, with the effect of incubation time as subplots. Three stallions were used as feces donors. After 28 days of adaptation to the diet and management, the feces were collected directly from the rectum of animals. After collection, the feces had been mixed with the nutritive solution in the ratio (weight:weight): 1:1 and 1:3 and kept in a water bath at 39 ? C constantly sprayed with CO2. After one hour, the material was filtered and 10 ml of inoculum had been added to previously prepared bottles. The fermentation bottles were prepared as follows: put 1 g of Coastcross hay and 90 ml of nutritive solution was added at the moment of inoculation or 12 hours before inoculation procedure. The variables bacteria count after 24 h of inoculation, the dry matter degradation (DMD), the organic matter degradation (OMD) and the neutral detergent fiber degradation (NDFD) at 24, 48 and 72 h of fermentation, as well the ammonia nitrogen content (NH3-N), pH and the cumulative gases production over 72 h had been evaluated. The nonlinear regression model adjusted the cumulative gases production. The results were submitted to ANOVA 5%, and the averages compared by SNK test at 5%. There was no significant effect of hydration and dilution factors in OMD, NDFD, NH3-N and the concentration of Lactobacillus spp., Streptococcus spp., cellulolytic bacteria and total anaerobic bacteria. The significant dilution effect in the pH was observed and the significant hydration effect in DMD. The interaction between incubation time and the hydration time of the substrate was detected over the cumulative gases production, with values significantly different starting at eight hours of incubation until the end of process. There was no proper fit to the proposed model, since the L parameter was not significant. The soluble nutrients of the Coastcross hay became available due to the hydration process, therefore, has used for the initial development of the microorganisms reducing the lag phase period of 2.32 (without hydration) to 0.24 h. In conclusion, the hydration of the dehydrated substrate is a strategy that increases the fermentation substrate extension and degradation of dry matter. Moreover, lag phase time was reduced. / Este trabalho teve como objetivo utilizar as fezes de equinos como fonte de in?culo em ensaios de fermenta??o in vitro com alimentos volumosos. Utilizou-se o delineamento inteiramente ao acaso em arranjo fatorial 2x2. O primeiro fator foi o tempo de hidrata??o do substrato: 0 e 12 horas; e o segundo fator foi a dilui??o das fezes com solu??o nutritiva na rela??o (peso:peso): 1:1 e 1:3. Para as vari?veis produ??o cumulativa de gases e degrada??o dos nutrientes o delineamento utilizado foi inteiramente ao acaso em esquema de parcelas subdivididas, com o efeito tempo de incuba??o na subparcela. Tr?s garanh?es foram utilizados como doadores de fezes. Ap?s 28 dias de adapta??o ? dieta e ao manejo, as fezes foram coletadas diretamente no reto dos animais. Ap?s a coleta, as fezes foram misturadas com a solu??o nutritiva na rela??o (peso:peso): 1:1 e 1:3 e mantidas em banho maria a 39?C constantemente borrifadas com CO2. Ap?s uma hora, o material foi filtrado e adicionou-se 10 mL de in?culo em frascos previamente preparados. Nos frascos de fermenta??o colocou-se 1 g do feno de Coastcross e, 90 mL de solu??o nutritiva adicionada no momento da inocula??o ou 12 horas antes da inocula??o. Avaliou-se a contagem bacteriol?gica 24 h ap?s a inocula??o, a degrada??o da mat?ria seca (DMS), mat?ria org?nica (DMO) e da fibra em detergente neutro (DFDN) nos tempos de 24, 48 e 72 h, o teor de nitrog?nio amoniacal (N-NH3), pH e a produ??o cumulativa de gases at? 72 h, a qual foi ajustada pelo modelo de regress?o n?o linear unicompartimental. Os resultados foram submetidos ? ANOVA 5% de signific?ncia, e as m?dias comparadas pelo teste SNK ? 5%. N?o houve efeito significativo dos fatores hidrata??o e dilui??o na DMO, DFDN, N-NH3 e na concentra??o de Lactobacillus spp., Streptococus spp., bact?rias celulol?ticas e bact?rias anaer?bias totais. Houve efeito da dilui??o no pH final e efeito da hidrata??o na DMS. Houve intera??o entre o tempo de incuba??o e o tempo de hidrata??o do substrato na produ??o cumulativa de gases, com valores apresentando diferen?a significativa a partir de oito horas p?s incuba??o. N?o houve ajuste adequado ao modelo proposto, pois o par?metro L n?o foi significativo. A hidrata??o do feno de Coastcross disponibilizou nutrientes sol?veis para o desenvolvimento inicial dos microrganismos, reduzindo o per?odo de fase lag de 2,32 para 0,24 h. Conclui-se que a hidrata??o do substrato volumoso desidratado ? uma estrat?gia que aumenta o volume de gases provenientes da fermenta??o do substrato e a degrada??o da mat?ria seca, al?m disso, reduz o per?odo de fase lag.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-04-27T18:09:30Z No. of bitstreams: 1 2015 - Jessica Coelho Melo.pdf: 1651769 bytes, checksum: 37df9227b9a25c24297ba5364064be27 (MD5) / Made available in DSpace on 2018-04-27T18:09:30Z (GMT). No. of bitstreams: 1 2015 - Jessica Coelho Melo.pdf: 1651769 bytes, checksum: 37df9227b9a25c24297ba5364064be27 (MD5) Previous issue date: 2015-08-21 / CNPq / The gray leaf spot caused by Stemphylium solani, has occasioned losses in the tomato crop (Solanum lycopersicum L.) in several regions of Brazil. Although there are resistant cultivars, the control has been made, essentially, with application of fungicides. These, despite the practicality and efficiency can lead to the accumulation of polluting substances in the air and in the fruits. This study aimed to evaluate: 1) the chemical control efficiency of the disease with commercial fungicides registered for crop and with alternative products such as syrups and plant extracts; 2) the influence of these treatments on the development and production of tomato; 3) the contribution of metals in the system and its contents in leaves and fruits; 4) to compare the contents of metals in the fresh mass of the fruits with the limits allowed by the legislation. Three trials were carried out, one in the greenhouse and two in the field, and different products were compared: mancozebe, tebuconazole, copper oxychloride, vi?osa mixture, bordeaux mixture, lime sulfur, garlic extract and water. Were evaluated the progress of the disease, the production and the supply of metals in the soil, plants and fruits (Cd, Co, Cr, Cu, Fe, Mn, Pb, Ni and Zn). The disease occurred on average at low intensity and did not affect the fruit production, which did not allow an adequate evaluation of the efficiency of the treatments. Among all the products tested, bordeaux and vi?osa mixtures and mancozebe were the most efficient in controlling the disease, however, without affecting the accumulation of fresh and dry mass of the plants and productivity. Bordeaux and vi?osa mixtures were the products that contributed the most to the incorporation of metals to the agrosystem followed by mancozebe and copper oxychloride. The concentration of metals in the fruits was below the maximum limit allowed by the MERCOSUL Technical Regulation, however, it deserves attention in view of fact that the Cd values found in the fruits are very close to the allowed limit, especially in the treatments with vi?osa mixture, oxychloride copper and bordeaux mixture. The continuous use of fungicides and vi?osa and bordeaux mixtures can contribute to the accumulation of heavy metals in the agrosystem. New studies addressing this topic should be made. / A mancha-de-estenf?lio, causada por Stemphylium solani, tem ocasionado perdas na cultura do tomateiro (Solanum lycopersicum L.) em v?rias regi?es do Brasil. Apesar de existirem cultivares resistentes, o controle tem sido feito, essencialmente, com aplica??o de fungicidas. Estes, apesar da praticidade e efici?ncia podem levar ao ac?mulo de subst?ncias poluentes no ar e nos frutos. O presente trabalho teve como objetivos avaliar: 1) a efici?ncia do controle qu?mico da doen?a com fungicidas comerciais registrados para a cultura e com produtos alternativos como caldas e extratos de plantas; 2) a influ?ncia destes tratamentos no desenvolvimento e produ??o do tomateiro; 3) o aporte de metais no sistema e os seus teores nas folhas e frutos; 4) comparar os teores de metais na massa fresca dos frutos com os limites permitidos pela legisla??o. Realizaram-se tr?s ensaios, um em casa-de-vegeta??o e dois no campo e compararam-se diferentes produtos: mancozebe, tebuconazole, oxicloreto de cobre, calda vi?osa, calda bordalesa, calda sulfoc?lcica, extrato de alho e ?gua. Avaliaram-se o progresso da doen?a, a produ??o e o aporte de metais no solo, plantas e frutos (Cd, Co, Cr, Cu, Fe, Mn, Pb, Ni e Zn). A doen?a ocorreu em m?dia a baixa intensidade e n?o afetou a produ??o de frutos, o que n?o permitiu uma adequada avalia??o da efici?ncia dos tratamentos. Dentre todos os produtos testados, as caldas bordalesa e vi?osa e o mancozebe foram os mais eficientes no controle da doen?a, por?m, sem afetar o ac?mulo de massa fresca e seca das plantas e a produtividade. As caldas bordalesa e vi?osa foram os produtos que mais contribu?ram para a incorpora??o de metais ao agrossistema seguido do mancozebe e do oxicloreto de cobre. A concentra??o de metais nos frutos esteve abaixo do limite m?ximo permitido pelo Regulamento T?cnico MERCOSUL, no entanto, merece aten??o tendo em vista o fato dos valores de Cd encontrados nos frutos estarem muio pr?ximo do limite permitido, especialmente nos tratamentos com calda vi?osa, oxicloreto de cobre e calda bordalesa. O uso cont?nuo de fungicidas e das caldas vi?osa e bordalesa podem contribuir para o ac?mulo de metais pesados no agrossistema. Novos estudos abordando este tema devem ser feitos.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-06T12:20:17Z No. of bitstreams: 2 bruno_silva_reis.pdf: 1050436 bytes, checksum: dec7027bded72894cf9cd4233a022296 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-06T12:21:52Z (GMT) No. of bitstreams: 2 bruno_silva_reis.pdf: 1050436 bytes, checksum: dec7027bded72894cf9cd4233a022296 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-06T12:22:07Z (GMT) No. of bitstreams: 2 bruno_silva_reis.pdf: 1050436 bytes, checksum: dec7027bded72894cf9cd4233a022296 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-01-06T12:22:07Z (GMT). No. of bitstreams: 2 bruno_silva_reis.pdf: 1050436 bytes, checksum: dec7027bded72894cf9cd4233a022296 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2013 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Este trabalho teve como objetivo verificar a exist?ncia de diferen?as no crescimento de mudas da esp?cie Qualea dichotoma, ao longo do tempo, no ambiente casa de sombra em fun??o de diferentes substratos e desenvolver uma metodologia b?sica de micropropaga??o a partir de sementes germinadas in vitro. No cap?tulo 1, utilizaram-se as seguintes composi??es de substratos: 1) Substrato comercial Bioplant ? (BIO); 2) 70% de vermiculita de granulometria m?dia (vermiculita) + 30% de casca de arroz carbonizada (VC); 3) 70% de vermiculita + 15% de casca de arroz carbonizada + 15% de fibra de c?co (VCF); 4) 40% de vermiculita + 30% de casca de arroz carbonizada + 30 % de Bioplant? (VCB). Em cinco avalia??es (60, 90, 150, 180 e 210 dias ap?s a emerg?ncia das pl?ntulas) foram mensuradas as alturas das mudas (H-cm), em quatro avalia??es (120,150, 180 e 210 dias ap?s a emerg?ncia das pl?ntulas) foram mensurados os di?metros do coleto das mudas (DC-mm), em duas avalia??es (165 e 215 dias ap?s a emerg?ncia das pl?ntulas), foram mensurados ?rea foliar (AF-cm2), comprimento (C-cm), largura (L-cm) e per?metro (P-cm). Aos 215 dias ap?s a emerg?ncia das pl?ntulas, foram feitas as seguintes avalia??es: peso da mat?ria seca da parte a?rea (PMSPA-g), peso de mat?ria seca de ra?zes (PMSR-g), peso de mat?ria seca total (PMST-g), rela??o parte a?rea e di?metro do coleto (RHDC), rela??o altura da parte a?rea e peso de mat?ria seca da parte a?rea (RHPMSPA) e rela??o peso de mat?ria seca da parte a?rea e peso de mat?ria seca das ra?zes (RPMSPAR). Os substratos VC e VCB apresentaram os melhores resultados em altura, di?metro, per?metro, PMSR e RPMSPAR. Existe diferen?a significativa no crescimento das mudas em fun??o dos substratos, onde os substratos VCB e VC apresentaram os melhores resultados para a produ??o de mudas de Qualea dichotoma. No cap?tulo 2, frutos de pau terra (Qualea dichotoma) foram coletados em 12 matrizes. Para a desinfesta??o in vitro as sementes foram imersas nos tempos de 5, 10, 15 e 20 minutos para cada concentra??o de hipoclorito de s?dio (2,5% e 5,0%). Em seguida, inoculou-se uma semente em cada tubo de ensaio contendo 10 ml do meio de cultura MS para a germina??o in vitro. As avalia??es foram realizadas diariamente, por 25 dias, registrando-se o n?mero de sementes germinadas. Das plantas germinadas, in vitro, com aproximadamente 35 dias, foram retirados dois tipos de explantes (segmentos cotiledonares e segmentos nodais) que foram inoculados em meio de cultura WPM, suplementado com a concentra??o de 0,01 mg L-1 ANA, constituindo a fase de multiplica??o, formada pelo cultivo inicial e dois subcultivos subsequentes. Para o cultivo inicial utilizou-se segmentos cotiledonares e nodais com as concentra??es de 0,1; 0,2; 0,4 e 0,6 mg L-1 de BA. Para o subcultivo 1 e 2, o experimento foi instalado utilizando concentra??es de 0,4 e 0,6 mg L-1 de BA para os segmentos nodais, e para segmentos cotiledonares concentra??es 0,2 e 0,4 mg L-1 de BA. Aos 45 dias para o cultivo inicial avaliou-se o n?mero de brota??es por explante, altura da maior brota??o e n?mero de ra?zes emitidas. Aos 60 dias ap?s a instala??o dos experimentos subcultivos 1 e 2, avaliou-se o n?mero de brota??es por explantes e altura da maior brota??o. Para a fase de alongamento os segmentos nodais foram inoculados em meio WPM, com as concentra??es de 0,0; 0,03; 0,06 e 0,09 mg L-1 de BA, combinados com 0,3 e 0,9 mg L-1 de ANA. Aos 60 dias de alongamento avaliou-se o comprimento (cm) da maior brota??o. Os resultados obtidos indicam a desinfesta??o de sementes com 2,5% de hipoclorito de s?dio durante 15 minutos, proporcionando germina??o m?dia in vitro superior a 85%. Para a multiplica??o ? indicado explantes obtidos de segmentos nodais e a concentra??o de 0,6 mg L-1 de BA adicionada ao meio de cultura WPM. Explantes obtidos de segmentos cotiledonares s?o mais indicados para a emiss?o de ra?zes e as combina??es utilizadas de ANA e BA n?o foram eficientes para o alongamento dos explantes. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT This study aimed to evaluate the check of differences in the growth of seedlings of the species Qualea dichotoma, over time, in the shade environment due to different substrates and develop basic methodology micropropagation from in vitro germinated seeds. In Chapter 1, we used the following substrate compositions: 1) Substrate commercial Bioplant ? (BIO), 2) 70% of average particle size of vermiculite (vermiculite) + 30% carbonized rice bark (VC), 3) 70 % vermiculite + 15% carbonized rice bark + 15% coconut fiber (VCF), 4) 40% vermiculite + 30% carbonized rice bark + 30% Bioplant ? (VCB). In five evaluations (60, 90, 150, 180 and 210 days after emergence of plantlets) were measured heights of seedlings (H-cm) in four assessments (120.150, 180 and 210 days after emergence of plantlets) were measured the diameter of the lap (DC-mm) in two evaluations (165 and 215 days after emergence of plantlets) were measured leaf area (AF-cm2), length (C-cm), width (L-cm) and perimeter (P-cm). At 215 days after emergence of plantlets, the following assessments were made: dry weight of aerial (PMSPA-g), dry weight of roots (PMSR-g), weight of total dry matter (PMST-g), ratio of the aerial and diameter of the lap (RHDC), relative aerial height and dry weight of aerial (RHPMSPA) and relative dry weight of aerial and dry weight of roots (RPMSPAR). The VC and VCB substrates showed the best results in height, diameter, circumference, and PMSR RPMSPAR. A significant difference in seedling growth in relation to substrates, where the substrates VCB and VC showed the best results for the production of seedlings Qualea dichotoma. In chapter 2, fruit ?stick earth? (Qualea dichotoma) were collected at 12 dies. Disinfestation in vitro seeds were immersed in times of 5, 10, 15 and 20 minutes for each concentration of sodium hypochlorite (2,5% and 5,0%). Then, a seed was inoculated into each test tube containing 10 ml the medium culture MS for germination in vitro. The evaluations were made daily for 25 days, recording the number of germinated seeds. Plants germinated in vitro for approximately 35 days, were taken two types of explants (cotyledon segments and nodal) were inoculated in medium culture WPM supplemented with concentration of 0,01 mg L-1 ANA, constituting the phase multiplication, formed by initial cultivation and two subsequent subcultures. For the initial culture was used cotyledon and nodal segments with concentrations of 0,1; 0,2; 0,4 and 0,6 mg L-1 BA. To subculture 1 and 2, the experiment was installed using concentrations of 0,4 and 0,6 mg L-1 BA for nodal, is for cotyledon segments concentrations 0,2 and 0,4 mg L-1 BA. At 45 days for initial cultivation evaluated the number of shoots per explant, height of largest shoot and root number. At 60 days after installation of subcultures experiments 1 and 2, we evaluated the number of shoots per explants and height of the largest shoot. For the elongation phase nodal segments were inoculated in medium culture WPM, with concentrations of 0,0; 0,03; 0,06 and 0,09 mg L-1 BA combined with 0,3 and 0,9 mg L-1 ANA. After 60 days of elongation phase evaluated the length (cm) of the largest shoot. The results indicate disinfection of seeds with 2.5% sodium hypochlorite for 15 minutes, giving an average germination in vitro than 85%. For multiplication is indicated nodal explants obtained from the concentration 0.6 mg L-1 BA added to WPM. Explants obtained from cotyledon segments are more suitable for the emission of roots and used combinations of NAA and BA were not efficient for the elongation of the explants.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:32Z No. of bitstreams: 5 24.pdf: 288332 bytes, checksum: 520195a14408865261a68ead5a355da8 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2110 bytes, checksum: b4c884761e4c6c296ab2179d378436d4 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T16:56:16Z (GMT) No. of bitstreams: 5 24.pdf: 288332 bytes, checksum: 520195a14408865261a68ead5a355da8 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2110 bytes, checksum: b4c884761e4c6c296ab2179d378436d4 (MD5) / Made available in DSpace on 2015-02-27T16:56:16Z (GMT). No. of bitstreams: 5 24.pdf: 288332 bytes, checksum: 520195a14408865261a68ead5a355da8 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2110 bytes, checksum: b4c884761e4c6c296ab2179d378436d4 (MD5) Previous issue date: 2010 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O sucesso da propaga??o vegetativa depende do estado nutricional da planta-matriz. Entretanto, padr?es ideais das concentra??es dos nutrientes n?o est?o ainda bem estabelecidos para a miniestaquia. Assim, o objetivo deste trabalho foi avaliar a influ?ncia da aduba??o NPK na produ??o de miniestacas de eucalipto em solu??o nutritiva. O trabalho foi realizado de novembro de 2008 a janeiro de 2009, em casa de vegeta??o. Foi utilizado delineamento inteiramente casualizado em esquema fatorial fracionado (4x4x4)?, perfazendo 32 tratamentos com tr?s repeti??es. Os tratamentos se constitu?ram de quatro doses dos nutrientes de N (50; 100; 200 e 400 mg L-1) na forma de ur?ia, P (7,5; 15; 30 e 60 mg L-1) na forma de ?cido fosf?rico e K (50; 100; 200 e 400 mg L-1) na forma de cloreto de pot?ssio em solu??o nutritiva. Houve apenas efeito significativo para as doses de N isoladamente. Observou-se efeito linear decrescente com o aumento das doses de N para as vari?veis como n?mero de miniestacas, massa seca das miniestacas, massa seca da raiz e parte a?rea da minicepa de eucalipto. O n?mero de miniestacas e os teores de nutrientes foliares das miniestacas se apresentaram adequados ? literatura existente. A distribui??o percentual da massa seca e dos nutrientes variou em fun??o do aumento das doses de N. O maior ac?mulo percentual de nutrientes e de massa seca ocorreu na parte a?rea das minicepas e nas miniestacas. A dose recomendada para o material gen?tico em estudo foi de 50, 7,5 e 50 mg L-1 para NPK, com produtividade de 12 miniestacas por minicepas num per?odo de 30 dias de coleta, com ac?mulo de nutrientes na miniestaca de 6,0 cm de eucalipto de: 86% do N, 56% do P, 42% do K, 42% do Ca, 36% do Mg, 84% do S, 26% do B, 04% do Cu, 15% do Fe, 23% do Mn e 12% do Zn. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT The success of vegetative spread depends on the nutritional state of the matrix plant. However, ideal standards of nutrients concentration are not well established for the minicutting yet. So, the objective of this work was to evaluate the influence of NPK fertilizer in the production of minicuttings in a simple hybrid of Eucalyptus urophylla in?nutrient solution. The experiment was realized from November, 2008 to January, 2009 in vegetation ambient. The experimental design was a completely randomized in fractional factorial scheme (4x4x4)1/2 totaling 32 treatments with three replicates. The treatments consisted by four nutrient doses of N (50, 100, 200 and 400 mg L-1) in the urea form, P (7.5, 15, 30 and 60 mg L-1) in the phosphoric acid form and K (50, 100, 200 and 400 mg L-1) in the potassium chloride form, in the nutrient solution. There was a significant effect only for the isolated N doses for the minicuttings. It was observed that the effect with the number and dry mass of minicuttings and dry mass of root and shoots of ministumps of eucalypt decreased linearly with increasing doses of N. The number of minicuttings and the content of the leaf nutrients in minicuttings were appropriate according to the literature. The percentage distribution of dry mass and nutrients varied in function of the N doses increase. The highest percentage accumulation of nutrients and of dry mass occurred in ministumps and miniccutings shoots, except for Cu and Fe. The recommended dose to the genetic material was respectively about 50, 7,5 e 50 mg L-1 for NPK, with productivity of 12 miniccutings per ministumps in a period of 30 days of collecting and with nutrient accumulation in the ministumps about 6,0cm of eucalypt in the following values: 86% of N, 56% of P, 42% of K, 42 of Ca, 36% of Mg, 84% of S, 26% of B, 04% of Cu, 15% of Fe, 23% of Mn, and 12% of Zn.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:33Z No. of bitstreams: 5 27.pdf: 817095 bytes, checksum: 277406d8e5c462beaed2bc45c9950c33 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T17:16:36Z (GMT) No. of bitstreams: 5 27.pdf: 817095 bytes, checksum: 277406d8e5c462beaed2bc45c9950c33 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T17:16:36Z (GMT). No. of bitstreams: 5 27.pdf: 817095 bytes, checksum: 277406d8e5c462beaed2bc45c9950c33 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2008 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / A sempre-viva Syngonanthus elegans, ? uma esp?cies end?mica dos Campos Rupestres que est? amea?ada de extin??o devido ao extrativismo, que busca sua beleza natural como mat?ria prima para confec??o de produtos ornamentais com alto valor comercial. Existem poucas informa??es sobre a ecologia desta esp?cie e nenhuma sobre a ocorr?ncia de fungos micorr?zicos arbusculares (FMAs). O objetivo deste trabalho foi avaliar a ocorr?ncia e a diversidade de FMAs em Syngonanthus elegans. Dez plantas com ra?zes e solo rizosf?rico foram coletadas, em julho de 2007, de locais de ocorr?ncia natural em Diamantina ? MG: Nascente do C?rrego do Soberbo e Parque Nacional das Sempre-vivas. Em cada local foi selecionada uma ?rea de 100 x 100m. Estas ?reas apresentam semelhan?a quanto ? fertilidade do solo e ao clima. Como controle, foram coletadas tr?s exemplares das esp?cies Loudetiopsis chrysothrix e Xyris sp. Em S. elegans foram observados estruturas f?ngicas como hifas, ves?culas arbusculos e esporos; alta porcentagem de ra?zes colonizadas (75 %) e 24 esp?cies de FMAs morfologicamente distintos. Mais da metade dos FMAs observados neste estudo n?o puderam ser identificadas a n?vel de esp?cie, sendo que algumas destas s?o possivelmente novas para ci?ncia, como Acaulospora sp.3, Scutellospora sp.1, Scutellospora sp.3 e Scutellospora sp. 4. As fam?lias de FMAs que ocorreram em S. elegans foram Gigasporaceae, Acaulosporaceae, Glomeraceae e Archaeosporaceae, sendo que as fam?lias Acaulosporaceae (47 %) e Gigasporaceae (35 %) foram predominantes nas duas ?reas. Foram observados cinco g?neros de FMAs em S. elegans ocorrendo nas ?reas estudadas, Scutellospora, Gigaspora, Acaulospora, Glomus e Archaeospora, sendo que o g?nero predominante no Soberbo foi Acaulospora (47 %) e Glomus (26 %) e no Parque Acaulospora (35 %), Glomus (29 %) e Scutellospora (24 %). No Parque, apesar de menor ?ndice de diversidade e equitabilidade, observou-se maior riqueza de esp?cies de FMAs. Essa maior riqueza de FMAs, aliada a melhor distribui??o de esp?cies por g?nero, indica que esta ?rea apresenta uma comunidade de FMAs mais est?vel. S. elegans ? uma planta micorr?zica e apresenta alta porcentagem de ra?zes colonizadas e diversidade de FMAs. Algumas esp?cies observadas podem ser novas para a ci?ncia. Novos estudos dever?o avaliar a import?ncia dos FMAs no estabelecimento e sobreviv?ncia de S. elegans. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2008. / ABSTRACT The star-flower Syngonanthus elegans is a species endemic of Campos Rupestres that is threatened with extinction due to the extractivism, which seeks its natural beauty as the raw material for manufacturing of ornamental products with high commercial value. There is little information on the ecology of this species and none on the occurrence of arbuscular mycorrhizal fungi (AMF). The objective of this study was to evaluate the occurrence and diversity of AMF in S. elegans. Ten plants with roots and rhizospheric soil were collected in July 2007 of places of natural occurrence in Diamantina - MG: the east C?rrego Soberbo and the Parque Nacional das Sempre-viva. At each location was selected an area of 100 x 100m. These areas have similar about the fertility of the soil and climate. As a control, were also collected three copies of the species Loudetiopsis chrysothrix and Xyris sp. In S. elegans fungal structures were seen as hyphae, vesicles, arbusculos and spores; high percentage of roots colonized (75%) and 24 species of AMF morphologically distinct. Over half of the AMF observed in this study could not be identified in terms of species, and that some of these are probably new to science, as Acaulospora sp.3, Scutellospora sp.1, Scutellospora sp.3 and Scutellospora sp. 4. The families of AMF that occurred in S. elegans were Gigasporaceae, Acaulosporaceae, Glomeraceae and Archaeosporaceae, and the families Acaulosporaceae (47%) and Gigasporaceae (35%) were predominant in the two areas. Five genera were observed of AMF in S. elegans occurring in the areas studied, Scutellospora, Gigaspora, Acaulospora, Glomus and Archaeospora, the predominant gender in Soberbo was Acaulospora (47%) and Glomus (26%) and the Park Acaulospora (35%), Glomus (29%) and Scutellospora (24%). In the Park, despite a lower index of diversity and evenness, there was greater wealth of species of AMF. This greater wealth of AMF, combined with better distribution of species by genera, indicates that this area has a community of AMF more stable. S. elegans is a mycorrhizal plant and it presents high percentage of colonized roots and diversity of AMF. Some observed species can be new for the science. New studies should evaluate the importance of AMF in the establishment and survival of S. elegans.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:35Z No. of bitstreams: 5 4.pdf: 3718414 bytes, checksum: f4d04925f023477104d351ad557bc315 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:48:03Z (GMT) No. of bitstreams: 5 4.pdf: 3718414 bytes, checksum: f4d04925f023477104d351ad557bc315 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:48:03Z (GMT). No. of bitstreams: 5 4.pdf: 3718414 bytes, checksum: f4d04925f023477104d351ad557bc315 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20626 bytes, checksum: 7851d446050a985bd0603b7c4cee472d (MD5) license_rdf: 19710 bytes, checksum: aa65da15f424ff71c620a992a187295c (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2010 / No Alto Vale do Jequitinhonha encontram-se extensas ?reas de relevo aplainado onde predominam as ?Chapadas?, que est?o separadas por ?reas dissecadas pelos afluentes dos rios Jequitinhonha e Ara?ua?. Nessas ?reas encontra-se um sistema de drenagem superficial com uma vegeta??o arb?reo-arbustiva e gram?neas, comumente denominadas de ?veredas?. O objetivo deste trabalho foi caracterizar morfol?gica, micromorfologica, quimica, fisica e mineralogicamente uma topossequ?ncia formada por Latossolo Vermelho Amarelo, Latossolo Amarelo, ?Latossolo Acinzentado? e Gleissolo representativos dos solos da microbacia da Vereda Lagoa do Leandro, localizada no munic?pio de Minas Novas - MG, enfatizando aspectos de sua g?nese e da evolu??o da paisagem nas chapadas do Alto Vale do Jequitinhonha. A topossequ?ncia est? embasada em rochas do Grupo Maca?bas e o clima ? tropical com esta??o seca de inverno. O Cerrado era a cobertura vegetal nativa nas ?reas de entorno da Vereda Lagoa do Leandro e foi substitu?do pelo reflorestamento com Eucaliptus sp. Os perfis ocupam as seguintes posi??es na vertente: topo - Latossolo Vermelho (LVA), ter?o m?dio de vertente - Latossolo Amarelo (LA), sop? - ?Latossolo Acinzentado? (?LAC?) e base da vereda - Gleissolo (GXbd). Esses perfis foram descritos e coletadas amostras deformadas e indeformadas para realiza??o das an?lises f?sicas, qu?micas, mineral?gicas e micromorfol?gicas. A Vereda Lagoa do Leandro ? caracterizada como de superf?cie tabular ocupando uma ?rea de aproximadamente 59 hectares. Os solos das partes mais elevadas da vertente apresentaram atributos morfol?gicos, f?sicos, qu?micos e mineral?gicos t?picos da classe dos Latossolos. No entanto, na base da vereda encontra-se o GXbd apresentando cores acinzentadas, forte gradiente textural e estrutura maci?a. A diminui??o de Fe cristalino e de baixa cristalinidade ao longo da vertente confirmou a perda de Fe e refletiu a cor dos solos. Os teores de Si e Al foram mais baixos no ?LAC?. Houve uma diminui??o da rela??o Fe2O3/TiO2 vertente abaixo, indicando impedimentos ? drenagem ao longo da topossequ?ncia. A mineralogia da fra??o argila em todos os solos ? dominada pela caulinita. Nos LVA e LA foram identificadas goethita, gibbsita e anat?sio, em ?LAC? anat?sio, em GXbd ilita, anat?sio e tra?os de vermiculita. A micromorfologia mostra a predomin?ncia da microestrutura tipo granular ou microagregados e porosidade do tipo empilhamento/empacotamento, t?picos de Latossolos, em LVA, LA e ?LAC?. No GXbd predomina a estrutura maci?a, com a presen?a de cut?s de iluvia??o e ferri-argil?s. Os solos e a paisagem da Vereda Lagoa do Leandro foram formados e evolu?ram juntamente com a instala??o e desenvolvimento da rede de drenagem que, por sua vez, est? relacionada com mudan?as clim?ticas pleistoc?nicas. Paleogleissolos foram latolizados pela a??o da fauna escavadora e deram origem aos atuais ?LAC?. Os GXbd da base da vereda preservaram atributos f?sicos, mineral?gicos e micromorfol?gicos que tiveram suas g?neses em per?odos secos. A g?nese e os atributos dos solos do sop? e da base das veredas das chapadas do Alto Vale do Jequitinhonha - MG s?o fortemente influenciados pela presen?a do len?ol fre?tico na superf?cie ou pr?ximo ? superf?cie o ano todo, no presente e/ou no passado. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT In the Alto Vale do Jequitinhonha there are large areas of flattened relief dominated by ?chapadas?, that are separated by areas dissected by tributaries of the river Jequitinhonha and Ara?ua?. In these areas there is one surface drainage system with a vegetation of trees and shrubs and grasses, commonly called ?Veredas?. The objective of this study was to characterize morphological, micromorphological, chemical, physical and mineralogically a toposequence formed by a Red Yellow Oxisol, Yellow Oxisol, ?Gray Oxisol? and Haplix Gleisol representative of soils in the watershed Vereda Lagoa do Leandro, located in Minas Gerais State, emphasizing aspects of its genesis and evolution of the landscape in the chapadas of the Alto Jequitinhonha. The toposequence is grounded by Maca?bas Group rocks, the climate is tropical with winter?s dry season. The Cerrado was the native vegetation in areas surrounding the Vereda Lagoa do Leandro and was replaced by the reforestation with Eucalyptus sp. The profiles occupy the following positions in the hillside: top - a Red Yellow Oxisol (LVA), the middle slope ? Yellow Oxisol (LA), the footslope ? ?Gray Oxisol? (?LAC?) and on the basis of the palm swanp ? Hasplic Gleisol (GXbd). These profiles were described and sampled and to carry out the physical analysis, chemical, mineralogical and micromorphological. The Vereda Lagoa do Leandro is characterized as tabular surface covering an area of approximately 59 hectares. The soils of the higher parts of the case showed the morphological, physical, chemical and mineralogical typical of Oxisols. However, at the base of the path is GXbd presenting the colors gray, strong texture gradient and massive structure. The reduction of crystalline Fe and amorphous over the case confirmed the loss of Fe and reflected the color of the soil. The contents of Si and Al were lower in the ?LAC?. There was a decrease in the case Fe2O3/TiO2 below hillside, indicating impediments to drainage along the toposequence. The clay mineralogy in all soils is dominated by kaolinite. In LVA and LA were identified goethite, gibbsite and anatase in ?LAC? anatase in GXbd illite, anatase and traces of vermiculite. Micromorphology shows the prevalence of type or granular microstructure and porosity of the micro-type stacking / packaging, typical of Oxisols, in LVA, LA and ?LAC?. In GXbd dominates the massive structure, with the presence of illuviation cutans and ferriargillans. The soils and the landscape of the Vereda Lagoa do Leandro were formed and evolved along with the installation and development of the drainage network, which in turn is related to Pleistocene climate change. Paleogleissols were latolization the action of the excavator and fauna led to the genesis of the ?LAC?. The GXbd the base of the palm swamp preserved the physical, mineralogical and micromorphological that had their genesis in dry periods. The genesis and characteristics of the soils of the topossequence and on the footslope and the basis of the palm swamp of the Chapadas of the Alto Jequitinhonha - MG are strongly influenced by the presence of ground water on the surface or near the surface all year, in present and/ or in past.