Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:33Z No. of bitstreams: 5 26.pdf: 1302337 bytes, checksum: c21d07fdc6025046be83ca352dd9eef4 (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 2015-02-27T17:13:27Z (GMT) No. of bitstreams: 5 26.pdf: 1302337 bytes, checksum: c21d07fdc6025046be83ca352dd9eef4 (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 2015-02-27T17:13:27Z (GMT). No. of bitstreams: 5 26.pdf: 1302337 bytes, checksum: c21d07fdc6025046be83ca352dd9eef4 (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: 2009 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / O presente estudo foi realizado com os seguintes objetivos: a) caracterizar o est?gio de degrada??o do solo com diferentes usos em ?reas de agricultores familiares no Vale do Mucuri; b) descrever a composi??o flor?stica de remanescentes de matas ciliares para subsidiar a recomposi??o das ?reas degradadas. Este trabalho faz parte do projeto n? 2008-3.08/07 Fapemig, em parceria com a ARMICOPA (Associa??o Regional Mucuri de Coopera??o dos Pequenos Agricultores). As amostras de solo foram coletadas em quatro localidades nos munic?pios de Ladainha, Novo Oriente, Pot? e Cara?, sendo que em cada localidade foram amostradas ?reas de pastagem, ?rea de cultura e remanescente florestal. Foram realizadas determina??es de atributos f?sicos, qu?micos e ligados ? mat?ria org?nica do solo de todas as ?reas. A composi??o flor?stica foi realizada nos quatro remanescentes florestais do bioma Mata Atl?ntica com Floresta Estacional Semidecidual. Foram alocadas nove parcelas de 10 x 10m, totalizando 900m? em cada ambiente de mata ciliar. O material bot?nico foi coletado dentro de cada parcela, sempre procurando atingir a maior diversidade poss?vel de esp?cies por fragmento. Dentre os agroecossistemas analisados, a mata foi a que apresentou melhor qualidade dos atributos do solo, o que indica que o uso e manejo influenciam diretamente sobre esses atributos. Nas quatro ?reas de mata ciliares foram identificadas 149 esp?cies, distribu?das em 81 g?neros e 40 fam?lias. Os resultados obtidos subsidiar?o a recupera??o desses ambientes com forma??o de sistemas agroflorestais, uma vez que a microrregi?o do Vale do Mucuri carece de estudos quanto ?s possibilidades de uso sustent?vel. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2009. / ABSTRACT The present study was accomplished with the following objectives: a) to characterize the degradation stage of the soil with different uses in areas of family farmers in Mucuri Valley; b) to describe the floristic composition of remnant ciliary forests in the aim to subsidize the degraded areas recovery. This work takes part of the project n?00 Fapemig in partnership with ARMICOPA (Mucuri Regional Association for Cooperation to Small Farmers). The soil samples were collected in four areas of the municipal districts of Ladainha, Novo Oriente, Pot? and Cara?, considering that in each place there were collected samples of pasture, culture and remnant forest areas. Determination of physical, chemical and linked to the organic matter of the soil attributes was accomplished in all areas. The floristic composition was accomplished in four remnant forests of Atlantic forest with Seasonal Semidecidual Forest bioma. Were allocated nine 10 x 10m portions, totaling 900m? in each ciliary forest environment. The botanical material was collected in each portion always attempting to reach the largest species diversity possible per fragment. Among the analyzed agroechossistems, the forest was the one that presented better quality of the soil attributes, indicating that the use and handling can influence directly on those attributes. In the four ciliary forest areas 149 species were identified, distributed in 81 genders and 40 families. The results are aimed at subsidizing the recovery of those environments with agroforests systems developing, once the Mucuri Valley microrregion lacks of studies about the possibilities of maintainable use.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:35Z No. of bitstreams: 5 45.pdf: 345535 bytes, checksum: c3649a3cfc01189e92c6e9258cbcfc4a (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:12:58Z (GMT) No. of bitstreams: 5 45.pdf: 345535 bytes, checksum: c3649a3cfc01189e92c6e9258cbcfc4a (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:12:58Z (GMT). No. of bitstreams: 5 45.pdf: 345535 bytes, checksum: c3649a3cfc01189e92c6e9258cbcfc4a (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2013 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O Brasil possui imensas ?reas de pastagens e a esp?cie mais cultivada ? a Brachiaria brizantha. O controle das plantas daninhas nestas ?reas ? realizado predominantemente pelo uso de herbicidas com longo per?odo residual, destacando-se o picloram. Este ? utilizado no controle de plantas daninhas de folhas largas perenes e tem sido intensamente pesquisado em fun??o da alta meia vida nos solos, sendo sua persist?ncia dependente do clima e atributos ed?ficos, como textura e pH. Objetivou-se com este trabalho avaliar o desenvolvimento e o potencial remediador de B. brizantha em solo contaminado com picloram em diferentes n?veis de pH. O delineamento experimental utilizado foi em blocos casualizados, com quatro repeti??es e com faixa de pH variando entre 4,5 e 5,6. Cultivou-se a forrageira at? a flora??o, quando se determinou a massa da mat?ria seca dos componentes da planta e posteriormente, cultivou-se plantas de pepino como indicadores da presen?a do herbicida. O picloram causou redu??o no ac?mulo da massa da mat?ria seca total das plantas de B. brizantha, em consequ?ncia do efeito negativo sobre a produ??o de ra?zes, independente do pH do solo. Nas folhas o herbicida promoveu redu??o na massa da mat?ria seca em solo com maior pH. Nos tratamentos com maior valor de pH, na profundidade de 35 cm, constatou-se maior ac?mulo de massa da mat?ria seca de ra?zes quando n?o se aplicou o herbicida, indicando que em solos menos ?cidos o herbicida tende a prejudicar o desenvolvimento de ra?zes da forrageira em maiores profundidades. A B. brizantha reduziu a concentra??o de picloram na camada superficial de solo, o que pode ser atribu?do a sua capacidade de degradar o herbicida e tamb?m ao fato desta absorver e exsudar o herbicida ao longo das camadas de solo. Observou-se tamb?m que em solos com maiores valores de pH o herbicida tem maior potencial de lixivia??o, principalmente quando n?o cultivado com B. brizantha. Solos com menores valores de pH tendem ? maior sor??o do herbicida, e consequentemente, a maior concentra??o do mesmo em camadas intermedi?rias. Pode-se concluir que altas concentra??es de picloram no solo s?o nocivas ao crescimento da B. brizantha, principalmente sob condi??es de solos menos ?cidos e esta forrageira pode ser usada para remedia??o de solos contaminados por picloram e na preven??o de sua lixivia??o, que ? maior em solos tratados com calc?rio. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT Brazil has vast areas of pasture and the specie most widely cultivated is Brachiaria brizantha. The weed control in these areas is carried out predominantly using herbicides of long residual period, highlighting the picloram. This herbicide is used for weed control broadleaf evergreen and has been intensively investigated due to the high half-life in soil, and their persistence dependent on climate and soil attributes such as texture and pH. The aim of this work was to evaluate the development and potential remediation of B. brizantha in soil contaminated with picloram at different pH levels. The experimental design was a randomized block with four replications and pH among 4.5 and 5.6. The forage was grown up to flowering, when determined the dry weight of the plant components and subsequently were cultivated cucumber plants such as bioindicators of presence of the herbicide. The picloram caused reduction of total dry matter accumulation of B. brizantha, consequently to negative effect on root production, regardless soil pH. The herbicide caused a reduction of leaf dry matter on plants cultivated in higher soil pH. In treatments of high pH value at a depth of 35 cm, there was greater accumulation of dry matter of roots when the herbicide was not applied, indicating that in less acid soils the herbicide tends to hinder the development of grass root at greater depths. B. brizantha reduced picloram concentration in the soil shallow layer, which can be attributed to its ability of degrade the herbicide, and also by fact of absorption and exudation herbicide along the soil layers. In higher pH soils also observed that ??the herbicide has higher potential for leaching, mainly when not cultivated B. brizantha. Soils with lower pH values ??tend to greater sorption of the herbicide, and consequently, a higher concentration of the same in the intermediate layers. Concluded that high concentrations of picloram in the soil are harmful to the growth of B. brizantha, mainly under conditions of soils less acidic and this forage can be used for remediation of soils contaminated by picloram and preventing leaching, which is greater in soils treated with lime.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:35Z No. of bitstreams: 5 46.pdf: 563320 bytes, checksum: 2d37cc7b9055ca38cdcd9948b229ca60 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:14:39Z (GMT) No. of bitstreams: 5 46.pdf: 563320 bytes, checksum: 2d37cc7b9055ca38cdcd9948b229ca60 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:14:39Z (GMT). No. of bitstreams: 5 46.pdf: 563320 bytes, checksum: 2d37cc7b9055ca38cdcd9948b229ca60 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2013 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O objetivo deste trabalho foi avaliar a produtividade, qualidade e ? conserva??o p?s-colheita de frutos de diferentes cultivares de morangueiro. Os experimentos foram conduzidos na fazenda Mape Frutas Ltda, localizada em Datas-MG, e no laborat?rio de Tecnologia de Biomassa do Cerrado, da UFVJM. Foram avaliadas oito cultivares de morangueiro: seis de dias curtos (Festival, Campinas, Toyonoka, Dover, Oso Grande e Camarosa), e duas de dias neutros (Diamante, Aromas), utilizando-se delineamentos estat?sticos espec?ficos para cada experimento. Os frutos foram colhidos duas vezes por semana no per?odo de maio a outubro de 2012. A cultivar Dover foi a que produziu maior n?mero de mudas por matriz e maior n?mero de mudas por hectare. As cultivares Aromas e Diamante apresentaram as maiores produtividades precoces de frutos. N?o foram observadas diferen?as significativas entre as cultivares para a produ??o por planta e para a produtividade total de frutos, exceto para a cultivar Toyonoka que apresentou os menores valores para essas caracter?sticas. As cultivares Camarosa, Diamante, Festival e Oso Grande apresentaram as maiores produ??es comerciais por planta e as maiores produtividades comerciais de frutos. As maiores produtividades totais foram obtidas nos meses de junho, julho e setembro. J?s as maiores produtividades comerciais foram obtidas no m?s de junho. As cultivares Camarosa, Festival e Toyonoka apresentaram as melhores caracter?sticas f?sico-qu?micas e antioxidantes. A cultivar Toyonoka apresentou a menor quantidade de aer?bicos mes?filos totais e a cultivar Oso Grande a menor quantidade de bolores e leveduras. Os frutos colhidos no m?s de outubro apresentaram maiores teores de a??cares redutores totais, vitamina C, fen?licos, antocianina, caroten?ides, s?lidos sol?veis e atividade antioxidante. A perda de massa dos frutos ? maior em condi??es de armazenamento ambiente quando comparado com o armazenamento em c?mara fria. O armazenamento em c?mara fria proporciona maior conserva??o p?s-colheita de frutos de morangueiro. Em condi??o ambiente os frutos podem ser armazenados por no m?ximo tr?s dias. J? em c?mara fria o armazenamento de frutos de morangueiro pode se prolongar por at? doze dias. A cultivar Toyonoka apesar de apresentar as melhores caracter?sticas f?sico-qu?micas, apresenta, juntamente com a cultivar Campinas, maiores incid?ncia de doen?as, maior perda de massa e menor firmeza dos frutos em rela??o as demais cultivares, havendo necessidade de ado??o de outras pr?ticas de conserva??o dos frutos. A perda de massa e a incid?ncia de doen?as afetam negativamente a apar?ncia dos frutos de morangueiro durante o armazenamento em c?mara fria, enquanto que em condi??o ambiente a incid?ncia de doen?as diminui a qualidade da apar?ncia dos frutos de morangueiro. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT The aim of this study was to evaluate the productivity, quality and postharvest fruit of different strawberry cultivars. The experiments were conducted on the Mape Fruits Farm Ltda, located in Datas - MG, in the Laboratory of Biomass Technology of the Cerrado, in the UFVJM. We assessed eight strawberry cultivars: six short days (Festival, Campinas, Toyonoka, Dover, Oso Grande and Camarosa), and two neutral days (Diamante, Aromas), using statistical designs specific to each experiment. The fruits were harvested twice a week from May to October 2012. Cultivar Dover was the one that produced the largest number of seedlings per array and larger number of seedlings per hectare. The Aromas and Diamante showed greater yield early fruit. There were significant differences among cultivars for plant production and overall productivity of fruits, except for the cultivar Toyonoka presented the lowest values ??for these features. The cultivars Camarosa, Diamante, Oso Grande Festival and had the highest yields per plant and commercial greatest commercial yields of fruit. The highest total productivities were obtained in the months of June, July and September. The greatest commercial yields were obtained in June. The cultivars Camarosa, Festival and Toyonoka showed the best physical and chemical characteristics and antioxidants properties. Cultivar Toyonoka had the lowest amount of aerobic mesophilic and Oso Grande cultivated the least amount of mold and yeast. Fruit harvested in October showed higher levels of total reducing sugars, vitamin C, phenolics, anthocyanin, carotenoids, antioxidant activity and soluble solids. The mass loss of the fruits is increased in ambient storage conditions when compared to cold storage. The cold storage provides greater post-harvest conservation of strawberry fruits. In natural conditions the fruits can be stored for a maximum of three days. Already in cold storage of strawberry fruits can be extended for up to twelve days. Cultivar Toyonoka despite having the best physical and chemical characteristics, features coupled with the variety Campinas, higher incidence of disease, greater weight loss and lower fruit firmness compared with other cultivars, requiring adoption of other conservation practices fruits. The weight loss and the incidence of diseases negatively affect the appearance of the fruit of strawberry during storage in a cold chamber at ambient condition while the incidence of disease decreases the quality of the appearance of the fruit of strawberry.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T15:42:49Z No. of bitstreams: 5 10.pdf: 2690869 bytes, checksum: 0e823732493249059e143a237bd69321 (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 2015-02-27T18:16:18Z (GMT) No. of bitstreams: 5 10.pdf: 2690869 bytes, checksum: 0e823732493249059e143a237bd69321 (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 2015-02-27T18:16:18Z (GMT). No. of bitstreams: 5 10.pdf: 2690869 bytes, checksum: 0e823732493249059e143a237bd69321 (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 / O Sistema Brasileiro de Classifica??o de Solos (SiBCS) ? um sistema taxon?mico, aberto e que se encontra em constru??o permanente, conforme novos conhecimentos sobre solos brasileiros s?o obtidos. O objetivo deste trabalho foi efetuar a caracteriza??o qu?mica, f?sica, morfol?gica, micromorfol?gica e mineral?gica de um ?Latossolo Acinzentado? (?LAC?) em topossequ?ncia formada por Latossolos representativos dos solos das chapadas da regi?o do Alto Vale do Jequitinhonha-MG, enfatizando aspectos de sua g?nese e contribuir para a cria??o da subordem ?LAC? no SiBCS. A topossequ?ncia localizada no munic?pio de Itamarandiba, MG, est? inserida no Planalto do Jequitinhonha, em ?reas denominadas chapadas, elaboradas sobre rochas do Grupo Maca?bas, com clima Aw segundo classifica??o de Koppen. A vegeta??o nativa ? o Cerrado, no entanto, na ?rea estudada predomina o reflorestamento com Eucaliptus spp. Os perfis ocupam as seguintes posi??es da vertente: topo (P18) ? Latossolo Vermelho, ter?o m?dio de vertente (P25) ? Latossolo Vermelho-Amarelo, ter?o inferior de vertente (P19) ? Latossolo Amarelo e sop? (P20) ? ?LAC?. Estes perfis foram descritos e amostrados para caracteriza??o proposta. Foram realizadas an?lises qu?micas e f?sicas de rotina. Os teores totais de Fe, Ti, Al, Mn e Si foram determinados pelo ataque sulf?rico e os ?xidos de Fe, Al e Mn foram avaliados nos extratos de ditionito-citrato-bicarnonato e oxalato. A mineralogia foi identificada pela difratometria de raios-X e os ?xidos de Fe foram identificados pela difratometria diferencial de raios-X. Por espectrometria de fluoresc?ncia de raios-X foram determinados Ti, Ga e Zr.Todos os solos apresentaram atributos morfol?gicos, f?sicos, qu?micos e mineral?gicos t?picos da classe dos Latossolos. P20 apresentou cores acinzentadas, significativos fragmentos de estrutura maci?a, caracter?stica de Gleissolos, nos horizontes A e BA. Todos os perfis s?o muito argilosos, distr?ficos, com baixos teores de P dispon?vel e pH em torno de 5. Os ?xidos de Fe, de modo geral, refletiram a cor dos solos e diminu?ram ao longo da vertente. A diminui??o de Fe cristalino e de baixa cristalinidade ao longo da vertente confirmou a perda de Fe. O Si seguiu o caminho inverso e o Al total permaneceu constante. A diminui??o da rela??o Fe2O3/TiO2 em P20 indicou problemas de drenagem neste solo. A mineralogia da fra??o argila em todos os perfis ? dominada por caulinita e gibbsita. Em P18 foram identificados hematita e goethita, em P25 hematita com baixa intensidade e goethita, em P19 goethita e em P20 n?o foram identificados ?xidos de Fe. A micromorfologia mostrou a predomin?ncia da microestrutura granular e porosidade do tipo empilhamento complexo, t?picos de Latossolos, em P18, P25 e P19. Em P20 cerca de 25% da ?rea da l?mina do horizonte A/BA ? composto pela microestrutura maci?a de colora??o cinza e 45% ? formada por microestrutura tipo microgranular, sendo esta, predominante Bw. A forma??o dos Latossolos da topossequ?ncia estudada pode estar relacionada com a evolu??o da rede de drenagem e pela a??o da fauna a latossoliza??o predominou na forma??o do ?LAC?. Os atributos dos solos da topossequ?ncia convergem para uma ?nica classe de solo, a dos Latossolos, que s?o originados do mesmo material de origem. O ?LAC? apresentou todos os atributos necess?rios ao seu enquadramento na classe dos Latossolos, exceto as cores acinzentadas. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2008. / ABSTRACT The Brazilian System of Soils Classification (SiBCS) it is a s taxonomic system, open and that meets in permanent construction, as new knowledge on Brazilian soils are obtained. The objective of this work went characterize morphologically, micromorphologically, chemically, physically and mineralogically a Xanthic Haplustox (?LAC?) in toposequence formed by representative Oxisol of the soils of the tableland occupying most of the land agricultural the region of the Alto Vale do Jequitinhonha, MG, emphasizing aspects of its genesis and to contribute to the creation of the suborder ?LAC? in SiBCS. The toposequence located in the municipality of Itamarandiba, MG, is inserted in the Jequitinhonha Plateau, in areas known as tableland, elaborated on rocks of the Maca?bas Group, with climate Aw second Koppen classification.The native vegetation is the Cerrado, however, in the area in study the reforestation prevails with Eucaliptus spp. The profiles occupy the following positions of the slope: top (P18) - Rhodic Haplustox, medium third (P25) - Typic Haplustox, lower third (P19) - Typic Haplustox and foot slope (P20) - "LAC". These profiles were described and collected to carry out the characterization proposal. The chemical and physical analyses of routine were accomplished. The total amount of Fe, Ti, Al, Mn and Si was determined for the attack sulfuric and the Fe oxides, Al and Mn were appraised in the dithionite-citrate-bicarbonate extracts and oxalate. The mineralogy was identified by the x-ray diffraction and the Fe oxides were identified for the differential x-ray diffraction. For fluorescence spectrometry X-ray they were certain Ti, Ga e Zr. All the soils presented morphological, physical, chemical and mineralogical typical attributes of the class Oxisol. P20 presented gray color, fragments of massive structure significant, characteristic of Entisol in horizons A and BA. All profiles are clay, distrophic, with low levels of available P and pH around 5. The Fe oxides, in general, reflected the color of the soil and decreased along the slope. The decrease of crystalline Fe and low crystallinity along the slope confirmed the loss of Fe. The Si followed the other way and Al total remained constant. The decrease of relationship Fe2O3/TiO2 indicated in P20 drainage problems in this soil. The mineralogy of clay in all the profiles it is dominated by kaolinite and gibbsite. In P18 were identified hematite and goethite, in P25 hematite with low intensity and goethite, in P19 goethite and in P20 were not identified Fe oxides. The micromorphology showed the prevalence of granular microstructure and packing voids, typical of Oxisol, P18, P25 and P19. In P20 about 25% of the area of the blade the horizon A/BA is composed of the massive microstructure of gray color and 45% is formed by granular microstructure, being this, Bw predominant. The formation of Oxisol of the studied toposequence it can be related with the evolution of the drainage net and for action of the fauna the feralitization prevailed in the formation of " LAC ". The attributes of soil toposequence converge to a single class of soil, the Oxisol, which originated from the same parent material. The ?LAC? had all the attributes necessary for to be included in the class of Oxisol, except the color gray.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:34Z No. of bitstreams: 5 32.pdf: 421716 bytes, checksum: f1dbd1cd2f5a9514dcb522400e36103c (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 22564 bytes, checksum: ff373f1ad387898ef8ba4f8bc9e37073 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:28:44Z (GMT) No. of bitstreams: 5 32.pdf: 421716 bytes, checksum: f1dbd1cd2f5a9514dcb522400e36103c (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 22564 bytes, checksum: ff373f1ad387898ef8ba4f8bc9e37073 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:28:44Z (GMT). No. of bitstreams: 5 32.pdf: 421716 bytes, checksum: f1dbd1cd2f5a9514dcb522400e36103c (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 22564 bytes, checksum: ff373f1ad387898ef8ba4f8bc9e37073 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2008 / O assa-peixe (Vernonia polyanthes Less.) esp?cie pertencente ? fam?lia Asteraceae, possui propriedades medicinais e tem potencial ap?cola. Apesar de seu intenso uso popular, s?o escassas as informa??es sobre os fatores que condicionam a germina??o e o armazenamento de suas sementes. Dessa forma, o objetivo do presente trabalho foi avaliar a qualidade fisiol?gica de sementes de assa-peixe em rela??o ao efeito dos fatores temperatura/luz, em diferentes tipos de c?maras, e a influ?ncia dos diferentes tipos de ambientes/embalagens, durante o per?odo de armazenamento. A pesquisa foi dividida em duas partes. A primeira parte consistiu em avaliar o efeito dos fatores temperatura e luz sobre o comportamento fisiol?gico das sementes de assa-peixe, atrav?s dos testes de vigor (teste de primeira contagem da germina??o e ?ndice de velocidade de germina??o) e germina??o, em diferentes tipos de c?maras, sob temperaturas constantes (Mangelsdorff e B.O.D.) e alternadas (B.O.D.), na presen?a e aus?ncia de luz. Os tratamentos foram dispostos em arranjo fatorial, com delineamento inteiramente casualizado e os dados foram submetidos ? an?lise de vari?ncia, com as m?dias comparadas entre si pelo teste de Tukey a 5% de probabilidade. Pelos resultados constatou-se que esta esp?cie comportou-se como ?fotobl?stica preferencial?, pelo fato da germina??o, ter ocorrido na presen?a e na aus?ncia de luz, por?m, esta foi favorecida em presen?a de luz. As maiores porcentagens de germina??o de sementes de assa-peixe foram obtidas a 25?C, independente do tipo de c?mara utilizada (Mangelsdorff ou B.O.D.), e na faixa de temperatura alternada 15-25?C (em B.O.D.), na presen?a de luz. As sementes de assa-peixe n?o germinaram sob temperatura de 40?C. A segunda parte da pesquisa consistiu em avaliar a influ?ncia dos diferentes tipos de ambientes e embalagens e do tempo de armazenamento sobre a qualidade fisiol?gica das sementes. Foram testados tr?s per?odos de armazenamento (0, 136 e 230 dias), sobre duas condi??es, em geladeira (5 ? 2?C) e ambiente de laborat?rio (22 ? 2?C), e tr?s tipos de embalagens (vidro, pl?stica e multifoliada). Determinou-se a porcentagem da umidade, vigor (teste de primeira contagem da germina??o e ?ndice de velocidade de germina??o) e germina??o. Os tratamentos foram dispostos em arranjo fatorial, com delineamento inteiramente casualizado e os dados foram submetidos ? an?lise de vari?ncia, com as m?dias comparadas entre si pelo teste Tukey a 5% de probabilidade. Foi verificado que o armazenamento das sementes de assa-peixe, em geladeira, proporcionou maiores valores para vigor e germina??o, com a embalagem de vidro apresentando melhor desempenho, comparados aos obtidos em ambiente de laborat?rio, independente da embalagem utilizada. O vigor e a germina??o das sementes de assa-peixe decrescem em fun??o do tempo, durante os 230 dias de armazenamento. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2008. / ABSTRACT The Vernonia polyanthes Less. is species belonging to the family Asteraceae has medicinal properties and have the potential apiculture. Despite their intense use popular, there are few information about the factors that affect the germination and storing their seeds. Thus, the objective of this study was the physiological quality of seeds of Vernonia polyanthes Less. in relation to the effect of factors temperature/light, in different types of chambers, and the influence of different types of environments/packaging, during the period of storage. The survey was divided into two parts. The first part of the research was to evaluate the effect of the factors temperature and light on the behavior physiological seeds of V. polyanthes Less., through testing of vigor (test first count of germination and germination speed index) and germination, using different types of chambers, under constant temperatures (Mangelsdorff and B.O.D.) and alternate temperatures (B.O.D.), in the presence and absence of light. The experimental design was completely randomized, in factorial scheme and the averages compared were by Tukey test at 5%. The species, behaved itself as "preferential fotobl?stica" because of germination, have occurred in the presence and absence of light, but this was better in the presence of light. The higher germination percentages the seeds of V. polyanthes Less. were obtained at 25?C, regardless of the type of chamber used (Mangelsdorff and B.O.D.), and on diary alternating temperatures 15-25?C (in B.O.D.), in the presence of light. The temperature of 40?C was not germination of seeds of V. polyanthes Less.. The second part of the research was to evaluate the influence of different types of environments and packaging and time of storage of seeds of V. polyanthes on the physiological quality seeds. It was tested three periods of storage (0, 136 and 230 days), on two conditions, in refrigerator (5? 2 C) and laboratory environment (22 ? 2 C), and three types of packaging (glass, plastic and multilayer). It was determined the percentage moisture, vigor (test first count of germination and germination speed index) and germination. The experimental design was completely randomized, in factorial scheme and the averages compared were by Tukey test at 5%. It was found that the storage of seeds of V. polyanthes Less. in refrigerator had better values for vigor and germination, with a pack of glass showing better performance, that when stored in laboratory conditions, regardless of the type of packaging used. The vigor and germination the seeds decreased after 230 days of storage.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:34Z No. of bitstreams: 5 35.pdf: 1736830 bytes, checksum: 19df23eb1c087b7ade84208f507df746 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 23422 bytes, checksum: b145eda3d84bdc4f56b389c0ab98d368 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:34:17Z (GMT) No. of bitstreams: 5 35.pdf: 1736830 bytes, checksum: 19df23eb1c087b7ade84208f507df746 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 23422 bytes, checksum: b145eda3d84bdc4f56b389c0ab98d368 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:34:17Z (GMT). No. of bitstreams: 5 35.pdf: 1736830 bytes, checksum: 19df23eb1c087b7ade84208f507df746 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 23422 bytes, checksum: b145eda3d84bdc4f56b389c0ab98d368 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2011 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O trabalho teve por objetivo avaliar a efici?ncia do pol?mero de poliacrilamida e turnos de rega no crescimento do eucalipto (Eucalyptus urophylla). O experimento foi conduzido em casa de vegeta??o no Departamento de Agronomia da Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina-MG, no per?odo de outubro a maio de 2010. O delineamento foi de blocos casualizados, contendo quatro tratamentos (doses de pol?meros hidrorretentores: 0, 2, 4 e 8 gramas por planta). Cada bloco constituiu um turno de rega, sendo 1; 5; 10, 20 e 40 dias de intervalo entre irriga??es. Cada parcela foi constitu?da por 4 sacos contendo uma planta de eucalipto. N?o houve efeito das doses de pol?mero no crescimento da planta. Quanto ao conte?do de nutrientes, apenas o pot?ssio (raiz) e o cobre (caule) apresentaram diferen?as estat?sticas, sendo a dose de 8 gramas por planta a superior. O aumento dos turnos de rega proporcionou diminui??o em todas as caracter?sticas biom?tricas e no ac?mulo do conte?do dos nutrientes avaliados. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT The purpose of this work was to evaluate the efficiency of polyacrylamide polymer and irrigation frequency in the growth of eucaliptus (Eucalyptus urophylla). The experiment was conducted in a greenhouse, at the Agronomy Department of Federal University of the Jequitinhonha and Mucuri Valleys, Diamantina-MG, in the period from October to May, 2010. It was conducted in a 4 x 4 factorial way, with 16 treatments and 5 repetitions. There was used a randomized block design with four treatments (doses polymers hydroretentors: 0, 2, 4 and 8 grams per plant). Each block had an irrigation frequency, as following: 1, 5, 10, 20 and 40 days between irrigations. Each plot consisted of 4 bags containing one eucalyptus plant each. There were observed no effect of polymer doses on plant growth. Considering the nutrient content in the plant, only potassium (root) and copper (stem) showed statistical differences, with a dose of 8 grams more. The increase in irrigation frequency caused a decrease in all biometric characteristics and in the accumulation of the nutrients content.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:34Z No. of bitstreams: 5 36.pdf: 448536 bytes, checksum: a5dbf2e4dce517f8347874ee986cea66 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:39:06Z (GMT) No. of bitstreams: 5 36.pdf: 448536 bytes, checksum: a5dbf2e4dce517f8347874ee986cea66 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:39:06Z (GMT). No. of bitstreams: 5 36.pdf: 448536 bytes, checksum: a5dbf2e4dce517f8347874ee986cea66 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2011 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O objetivo do presente trabalho foi estimar os efeitos de popula??es, matrizes e idade da planta na express?o de vari?veis f?sicas, qu?micas e f?sico-qu?micas de frutos de pequizeiro. Colheram-se frutos oriundos de 15 matrizes em Curvelo e 15 em S?o Gon?alo do Rio Preto, Minas Gerais. A amostragem foi feita de maneira a se ter, em cada popula??o, matrizes com diferentes di?metros de tronco, sendo este ?ltimo uma estimativa da idade da planta. Para todas as vari?veis foram tomados dez frutos por matriz e as vari?veis qu?micas e f?sico-qu?micas foram avaliadas em cinco matrizes de cada popula??o. Avaliaram-se, em cada fruto, as vari?veis f?sicas: peso total; peso do mesocarpo externo; peso total dos put?mens; peso m?dio dos put?mens; n? de put?mens; peso total de polpa; e peso m?dio de polpa. As vari?veis qu?micas e f?sico-qu?micas, avaliadas na polpa, foram: umidade; cinzas; lip?deos; prote?nas; carboidratos totais; pH; s?lidos sol?veis totais; e acidez total titul?vel. O efeito de matrizes foi altamente significativo para todas as vari?veis avaliadas (P<1%), enquanto o de popula??es foi apenas para duas vari?veis (5%<P<10%). As estimativas das correla??es entre as vari?veis f?sicas avaliadas foram todas positivas, algumas significativas, enquanto que para as vari?veis qu?micas e f?sico-qu?micas observaram-se estimativas positivas e negativas, a maioria n?o significativa. As estimativas das correla??es entre o di?metro do tronco e as vari?veis f?sicas foram todas positivas, significativas apenas para duas vari?veis (P<5%). Para as vari?veis qu?micas e f?sico-qu?micas, observaram-se correla??es positivas e negativas, por?m n?o significativas. A sele??o de matrizes no campo para as caracter?sticas avaliadas que apresentaram correla??es n?o significativas ou significativas positivas deve promover ganhos gen?ticos nos descendentes se estes forem obtidos por propaga??o vegetativa, o mesmo n?o se podendo afirmar para descendentes obtidos por via sexuada. A idade da matriz n?o deve alterar os ganhos gen?ticos para estas vari?veis. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT The present work aimed to estimate population, mother tree and plant age effects on the expression of physical, chemical and physic-chemical traits on pequi fruits Seeds were collected from two populations and fifteen mother trees in each population, one located at Curvelo and another at S?o Gon?alo do Rio Preto, both from Minas Gerais State. The sampling was done in a way to sample trees among a range of trunk diameters, the last trait being an estimate of the tree age. Physical traits, evaluated on each of ten fruits sampled from all harvested trees, were: fruit total weight; external mesocarp weight; total weight of put?mens; mean weight of put?mens; number of put?mens; total weight of pulp; and mean weight of pulp. Chemical and physic-chemical traits, evaluated in five trees from each population, were: humidity; ashs; lipids; proteins; total carbohydrate; pH; total soluble solids; and total acidity. The mother trees effects were significant for all traits (P<1%), while the populations were only for two traits (5%<P<10%). Estimates of correlations among physical traits were all positive and some of them significant. For chemical and physic-chemical traits there were positive and negative correlations, most not significant. Estimates of correlations between trunk diameter and each physical variable were all positive, being significant for two traits (P<5%). Positive and negative but not significant correlations were observed for chemical and physic-chemical traits. Mother tree selection for traits that showed non significant or significant and positive correlations with trunk diameter may promote genetic gain in their descendents for vegetative propagation but the same assertion can?t be said when propagation is carried out by seeds. Mother tree age is not expected to cause any effect in genetic gains for these traits.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:34Z No. of bitstreams: 5 39.pdf: 622297 bytes, checksum: f0b6a4c72e9ca840834c09213d059a4b (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:45:27Z (GMT) No. of bitstreams: 5 39.pdf: 622297 bytes, checksum: f0b6a4c72e9ca840834c09213d059a4b (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:45:27Z (GMT). No. of bitstreams: 5 39.pdf: 622297 bytes, checksum: f0b6a4c72e9ca840834c09213d059a4b (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2011 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes)/MEC / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Funda??o de Apoio ao Ensino, Pesquisa e Extens?o (FAEPE) / Comparou-se a efetividade de linhagens melhoradas de tomateiro, ricas em 2-tridecanona (2-TD), zingibereno (ZGB) e acila??cares (AA), ou no tocante aos n?veis de resist?ncia ? tra?a-do-tomateiro Tuta absoluta. Tamb?m verificou-se se linhagens selecionadas para maiores densidades de tricomas glandulares, presumivelmente com maiores n?veis de 2-tridecanona, ? efetiva no sentido de promover maior resist?ncia ? tra?a. Como testemunhas suscet?veis foram utilizadas as linhagens TOM-584 e TOM-679, com n?vel normal dos tr?s aleloqu?micos. A linhagem melhorada TOM-687 (com alto teor de AA) foi utilizada como linhagem resistente padr?o, por ter sua resist?ncia amplamente documentada, juntamente com o tamb?m resistente acesso selvagem PI134417 (com alto teor de 2-TD). O experimento foi instalado em casa de vegeta??o em delineamento inteiramente casualizado. O acesso selvagem PI 134417 confirmou-se como altamente resistente. TOM-622 (rica em 2-TD), ZGB-703 (rica em ZGB) e TOM-687 apresentaram diminui??es significativas na ovoposi??o da tra?a-do-tomateiro, bem como no dano geral na planta, les?o nos fol?olos e porcentagem de fol?olos atacados, comparadas ?s testemunhas TOM-584 e TOM-679. Os n?veis de resist?ncia ? tra?a em TOM-622, ZGB-703 e TOM-687 foram similares entre si. Em geral os gen?tipos selecionados para maiores densidades de tricomas glandulares apresentaram n?veis de resist?ncia tamb?m superiores aos das testemunhas suscet?veis, destacando entre eles o tratamento BPX-367D-238-02. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT In Brazil the Cactaceae is represented by 160 species from which 26% occur on the rocky fields. Cipocereus minensis is an endemic Cactaceae from the rocky fields in the Minas Gerais? portion of the Espinha?o chain. In this research it was intended to evaluate the rhythms of flower and fruit production of the species, its floral and reproductive biology, and also know the floral visitors and the likely seed dispersers, in an area of the rocky fields of the Diamantina ? MG?s plateau. Seed germination tests have been performed and the initial plant growth on different substrates was analyzed. The species had floral traits such as nocturnal anthesis, white flowers, abundant volume of nectar and rigid perianth structures that suggested pollination by bats. However daily visitors as hummingbirds were also observed. The reproductive system of C. minensis is alogamic and self incompatible and the night visitors were more efficient than the daytime ones in the formation of fruits. The phenologic pattern of flowering and fruiting is sub-annual, with peak of flowering at the beginning and middle of the dry season, in april and july, respectively. Another peak was observed in the wet season in november, with lower production of flowers, but with a higher flower/fruit conversion rate . C. minensis is well adapted to the climatic seasonality. The fruits showed significant differences with respect to collection time for the length, diameter and weight, with higher measures in the wet season. The average number of seeds per fruit was 958.63 ? 369.35, the weight of 1000 seeds was 0.53 g and the mean length of the seeds was 1.5 mm. The highest germination rates were found after nine and twelve months of storage (75% and 72%, respectively) or in fruits collected with a more advanced stage of ripening (72%).In the initial growth the plants showed a higher diameter and height on the substrate prepared in the ratio 1:1:1, composed of sand, red soil and cow dung. The store promotes germination, but also in fruits collected in a more advanced stage of maturation. Substrates with better drainage and aeration favoring better initial development of this plant species. This information will provide subsidies for the development of strategies of conservation and management of the species.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:35Z No. of bitstreams: 5 41.pdf: 467693 bytes, checksum: 46ea478cf12119fee773189de4a6bf91 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:50:14Z (GMT) No. of bitstreams: 5 41.pdf: 467693 bytes, checksum: 46ea478cf12119fee773189de4a6bf91 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:50:14Z (GMT). No. of bitstreams: 5 41.pdf: 467693 bytes, checksum: 46ea478cf12119fee773189de4a6bf91 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2013 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Dentre as esp?cies mais utilizadas na implanta??o de pastagens est?o as do g?nero Brachiaria. Os benef?cios do uso de sementes de alta qualidade para forma??o de pastagem podem ser facilmente constatados pelo r?pido estabelecimento da forrageira, pastagem formada uniformemente e cobertura mais r?pida do solo, resultando em uma utiliza??o da pastagem em menor espa?o de tempo. Por?m, as metodologias utilizadas para avaliar a qualidade de suas sementes ainda n?o est?o bem definidas. O uso de testes de vigor ? uma ferramenta imprescind?vel para a avalia??o do potencial fisiol?gico dos lotes de sementes. Assim, objetivou-se com este estudo adequar os testes de envelhecimento acelerado e de condutividade el?trica, para avaliar o potencial fisiol?gico de lotes de sementes de Brachiaria brizantha das cultivares Marandu e Xara?s, cada uma delas representada por quatro lotes. Para o teste de envelhecimento acelerado as sementes foram submetidas ao envelhecimento acelerado tradicional e com solu??o saturada de NaCl, em cinco per?odos de envelhecimento, 0; 24; 48; 72 e 96 horas. Para o teste de condutividade el?trica, as sementes foram submetidas a 12 per?odos de imers?o em ?gua, por 2; 4; 6; 8; 10; 12; 14; 16; 18; 20; 22 e 24 horas, utilizando-se 25 sementes em 25 mL e em 50 mL, 50 sementes em 50 mL e em 75 mL de ?gua. Para caracterizar o perfil dos lotes, foi determinado o grau de umidade, os testes de germina??o, primeira contagem da germina??o, ?ndice de velocidade de germina??o, estande inicial, emerg?ncia e ?ndice de velocidade de emerg?ncia. Conclui-se que o teste de envelhecimento acelerado possibilita a separa??o dos lotes de B. brinzatha cv. Marandu e cv. Xara?s, pelo m?todo com solu??o saturada de NaCl por 72 horas e 24 horas, respectivamente. No teste de condutividade el?trica, o per?odo de imers?o de 14 horas, utilizando-se 50 sementes em 50 mL, para a cv Marandu, e utilizando-se 25 sementes em 25 mL ou 50 sementes em 50 mL de ?gua, para a cv Xara?s ? adequado para avalia??o do potencial fisiol?gico das sementes. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT Among the species most commonly used in the implementation of the pastures are of the genus Brachiaria. The benefits of using high quality seeds for pasture formation can be easily found by the rapid establishment of forage, pasture formed uniformly and cover the ground more quickly, resulting in a pasture utilization in shorter time. However, the methodologies used to evaluate the quality of their seeds are still poorly defined. The use of vigor testing is an essential implement for the evaluation of the physiological potential of seed lots. The objective of this research was adjust the accelerated aging tests and electrical conductivity, to evaluate the physiological potential of seed lots from Brachiaria brizantha Marandu and Xara?s cultivars, each represented by four lots. For the accelerated aging test, seeds were submitted to traditional accelerated aging and with saturated NaCl solution, five periods of aging, 0, 24, 48, 72 and 96 hours. For the electrical conductivity test, seeds were submitted to 12 periods of imbibitions in water for 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22 and 24 hours, using samples of 25 seeds in 25 mL and 50 mL, 50 seeds in 50 mL and 75 mL of water. To characterize the profile of lots, were determined moisture content, germination tests, first count of germination, speed of germination, initial stand, emergence, and? speed of emergence index. The accelerated aging test makes possible the separation of lots of B. brinzatha cv Marandu and cv Xara?s by the method with saturated NaCl solution for 72 hours and 24 hours, respectively. For the electrical conductivity test, the imbebition period during 14 hours using 50 seeds in 50 mL to Marandu and using 25 seeds in 25 mL or 50 seeds in 50 mL of water for cultivar Xara?s is appropriate for evaluating the seed physiological potential.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:35Z No. of bitstreams: 5 43.pdf: 544294 bytes, checksum: cfadb6b62ac14a80b845bf3c73c07552 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:58:40Z (GMT) No. of bitstreams: 5 43.pdf: 544294 bytes, checksum: cfadb6b62ac14a80b845bf3c73c07552 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:58:42Z (GMT). No. of bitstreams: 5 43.pdf: 544294 bytes, checksum: cfadb6b62ac14a80b845bf3c73c07552 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / O entendimento da interfer?ncia promovida pelas esp?ciesexistentesna comunidadede plantas daninhas doolival esuas densidadesrelativas s?oconsidera??es importantes nomanejo dessas plantas para manter o equil?brio da competi??o, permitindo que o cultivo da oliveira seja beneficiado. A pesquisa foi realizada com o objetivo de avaliar a capacidade competitiva de mudas de oliveira cultivadas com diferentes esp?cies e densidades de plantas daninhas sobre o crescimento vegetativo e os teores de nutrientes. Para avaliar a capacidade de competi??o da oliveira com as plantas daninhas foram conduzidos tr?s experimentos em casa de vegeta??o do Setor de Fruticultura da Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, MG. No primeiro experimento avaliou-se o crescimento inicial de mudas de duas cultivares de oliveira ?Arbequina? e ?Koroneiki? convivendo com cinco esp?cies de plantas: Bidens pilosa, Brachiaria brizantha, Cenchrus echinatus,Canavalia ensiformis e Lupinus albus, e um tratamento sem conviv?ncia com plantas daninhas por um per?odo de 60 dias. Observou-se que a cultivar Arbequina mostrou-se mais tolerante a interfer?ncia das esp?cies de plantas. B. pilosa, C. ensiformes e L. albus foram as esp?cies com maior potencial de interfer?ncia no crescimento inicial das mudas de oliveira. No segundo, avaliou-se o crescimento de duas cultivares de oliveira, ?Arbequina? e ?Ascolano? cultivadas com quatro esp?cies de plantas competidoras, Amaranthus retroflexus, B. brizantha, B. pilosa, e C. echinatus e as testemunhas, que foram as mudas de oliveiras e as plantas daninhas de cada esp?cie sem competi??o por um per?odo de 90 dias. A competi??o com as plantas daninhas interferiu no crescimento e nos teores de nutrientes de mudas de oliveira. A ?Ascolano? mostrou-se mais tolerante a competi??o com as esp?cies de plantas daninhas. A. retroflexus e B. pilosa foramas esp?cies com maior potencial de competi??o com mudas de oliveira. No terceiro experimento, foi avaliada a conviv?ncia das mudas de oliveira ?Arbequina? e ?Ascolano? com cinco densidades de B.brizantha, zero, uma, duas, tr?s e quatro plantas por vaso por um per?odo de 70 dias. Observou-se que a B. brizantha interferiu negativamente no crescimento vegetativo da oliveira. A cultivar ?Ascolano? apresentou maior capacidade competitiva com todas as densidades de B. brizantha. O aumento da densidade de B. brizantha interferiu no estado nutricional das mudas de oliveira. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT Understanding of the interference promoted by species existing in weed community of olive groves and their densities are important considerations in management of these plants to maintain the competition balance, allowing the cultivation of olive trees be favored. The research was conducted with the aim of evaluate the competitive ability of olive nursery trees grown with different species and weed densities on vegetative growth and nutrients contents. Three experiments was conducted in a greenhouse of Setor de Fruticultura of Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, MG to evaluate the competition ability of olive tree with the weeds. The first experiment evaluated the nursery tree growth of two olive cultivars ?Arbequina? and ?Koroneiki? coexisting with five plant species: Bidens pilosa, Brachiaria brizantha, Cenchrus echinatus, Canavalia ensiformis and Lupinus albus and one treatment without coexistence for a period of 60 days. It was observed that the ?Arbequina? cultivar was more tolerant to interference of plant species. B. pilosa, C. ensiformes and L. albus were the species with greater potential for interference on the growth of olive nursery trees. In the second it was evaluated the growth of two olive cultivars, ?Arbequina? and ?Ascolano? planted with four species of competing plants, B. brizantha, A. retroflexus, B. pilosa and C. echinatus and the controls, which were the olive nursery trees and the weeds of each species without competition for a period of 90 days. Competition with weeds affected the growth and nutrients contents of olive nursery trees. ?Ascolano? was more tolerant to the competition with weed species. The species A. retroflexus and B. pilosa were the species with the greatest potential competition with olive nursery tree. In the third experiment was evaluated the relationship between the olive nursery trees ?Arbequina? and ?Ascolano? with four densities of B. brizantha zero, one, two, three and four plants per pot for a period of 70 days. It was observed that B. brizantha affected negatively in vegetative growth of olive nursery trees. The cultivar ?Ascolano? showed greater competitive ability with all densities of B. brizantha. The increased density of B. brizantha affected the nutritional status of olive nursery trees.