Thesis (M.S.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains vii, 60 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 56-60).

Thesis (Ph. D.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains viii, 128 p. : ill. (some col.) Vita. Includes abstract. Includes bibliographical references (p. 108-115).

Thesis (M.S.)--Oregon State University, 2007. / Printout. Includes bibliographical references. Also available on the World Wide Web.

Orientador: Leila Trevisan Braz / Banca: Antonio Baldo Geraldo Martins / Banca: Renata Castoldi / Banca: Hamilton César de Oliveira Charlo / Banca: Letícia Akemi Ito / Resumo: Nos últimos anos, tem-se destacado o grupo de melancias de menor tamanho, de um a três quilos, denominadas de minimelancias. Essas melancias quando conduzidas em ambiente protegido, requerem sistema de condução na vertical e manejo de plantas para garantir elevada produtividade por área e frutos de qualidade. Com base nisso, esse trabalho teve por objetivos avaliar o desempenho de híbridos comerciais de minimelancia em diferentes espaçamentos, orientação do crescimento, e número de plantas. Para isso, foram conduzidos dois experimentos, cultivados sob ambiente protegido em substrato de fibra da casca de coco, com fertirrigação. A primeira etapa foi instalada utilizando o delineamento experimental de blocos ao acaso, em esquema fatorial 5 x 3, com quatro repetições. Os fatores avaliados foram: cinco híbridos de minimelancia ('Beni Kodama'; 'Ki Kodama'; 'Smile'; 'New Kodama'; e 'Beni Makura') e três espaçamentos entre plantas (E1= 0,35; E2= 0,50; E3=0,65). A segunda etapa foi conduzida utilizando o híbrido 'Smile' no delineamento experimental de blocos ao acaso, esquema fatorial 2 x 2, com oito repetições. O primeiro fator foi constituído de número de hastes por planta (1 e 2 duas hastes), e o segundo fator foi composto de número de plantas por vaso (1 e 2 plantas). Em ambas as etapas avaliaram-se características de produção, qualidade, assim como, parâmetros fisiológicos da planta. Na etapa 1 não houve interação significativa entre os fatores avaliados (híbridos e espaçamentos... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: In recent years, it has highlighted the group of smaller watermelons, one to three kilos, called minimelancias. These watermelons when conducted in a protected cultivation, require training system vertically and management plans to ensure high productivity per area and fruit quality. Based on this, this study aimed to evaluate the performance of commercial hybrid minimelancia in different spacings, growth orientation, and number of plants. For this, two experiments were conducted, cultivated under protected environment in fiber substrate of coconut shell, with fertigation. The first stage was installed using the experimental design of randomized blocks in a factorial 5 x 3, with four replications. The factors evaluated were: five hybrids of minimelancia ('Beni Kodama', 'Ki Kodama', 'Smile', 'New Kodama', and 'Beni Makura') and three spacings between plants (E1 = 0.35; E2 = 0.50; E3 = 0.65). The second stage was conducted using the hybrid 'Smile' in the experimental design of randomized, factorial 2 x 2 with eight repetitions. The first factor is constituted by the number of stems per plant (stems 1 and 2) and the second factor consisting of the number of plants per pot (plants 1 and 2). In both stages were evaluated production characteristics, quality, as well as physiological parameters of the plant. In step 1, there was no significant interaction between the factors evaluated (hybrid and spacings). For hybrids is observed that there was a significant difference only for fre... (Complete abstract click electronic access below) / Doutor

Orientador: José Teixeira Filho / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Geociências / Made available in DSpace on 2018-08-22T23:02:36Z (GMT). No. of bitstreams: 1 Poli_DelciMagalhaes._M.pdf: 7037560 bytes, checksum: a3c49fdccdd6e0ddac9ecf51ba79b687 (MD5) Previous issue date: 2012 / Resumo: O trabalho foi desenvolvido no campo experimental da Faculdade de Engenharia Agrícola da Universidade Estadual de Campinas, Campinas, SP, posição geográfica definida pelas coordenadas 22° 53' 22" LS e 47° 044' 39" LW. O estudo procurou verificar se a utilização de crostas de eletrofusão da bauxita como substrato, em leitos cultivados construídos ou "Constructeds Wetlands" com os vegetais aquáticos emergentes Typha sp, Canna limbata e Cyperus prolifer, interfere na dinâmica do pH, fósforo e nitrogênio presentes em águas residuárias domésticas. Foram utilizados 6 tanques artificiais, sendo constituído por 3 séries de duas unidades, com fluxo vertical e saídas subsuperficiais, nominados por série Typha, leitos 3.1 e 3.2; série Canna, leitos 2.1 e 2.2; série Cyperus 1.1 e 1.2 e preenchidos com crostas de eletrofusão da Bauxita. A dimensão de cada tanque é de 4 metros de comprimento por 3 metros de largura por 1 metro de altura, totalizando 12 m³. Em cada uma das séries foram plantados os vegetais Typha sp, Canna limbata e Cyperus prolifer respectivamente. O período de monitoramento foi de setembro de 2009 a fevereiro de 2010. O desempenho do foi avaliado considerando o desenvolvimento dos vegetais, quantidades e qualidades químicas das águas residuárias. As águas foram coletadas semanalmente, em dias aleatórios, nas entradas e saídas dos tanques durante o período monitorado; os vegetais foram colhidos, somente uma vez, no final do período. As vazões médias diárias e os pH médios ocorridos no período monitorado, observados no afluente e nas saídas da série Typha foram 962 l/dia, 864 l/dia e 804 l/dia; os pH foram 6,9; 8,6 e 9,0. Na série Canna as vazões foram 954 l/dia, 797 l/dia e 735 l/dia; os pH foram 6,9; 9,2 e 9,3. Na série Cyperus as vazões foram 792 l/dia, 723 l/dia e 664 l/dia; os pH foram 6,9; 9,0 e 9,1. Os tempos de detenções hidráulicas, considerando os leitos nas séries citadas foram: 4,2 dias e 4,6 dias; 4,0 dias e 4,6 dias e 4,3 dias e 4,4 dias. As porcentagens médias de retenções de nitrogênio total nos leitos, considerando as massas que entraram, por intermédio dos afluentes, durante o período monitorado foram: a) Série Typha 27% e 19%; b) Série Canna 35% e 19%; c) Série Cyperus 32% e 21%. As remoções realizadas pelos vegetais foram: a) Série Typha 26% e 9%; b) Série Canna 42% e 11%; Série Cyperus 22% e 15%. Em relação ao fósforo, as porcentagens médias de retenções, considerando as massas que entraram nos leitos por meio dos afluentes, foram: a) Série Typha 70% e 31%; b) Série Canna 73 e 19%; Série Cyperus 74% e 27%. As remoções realizadas pelos vegetais foram: a) Série Typha 11% e 4%; b) Série Canna 17% e 4%; c) Série Cyperus 7% e 11%. As massas vegetais totais secas produzidas foram: a) Série Typha 39,9 Kg e 11.2 Kg; b) Série Canna 50,5 Kg e 26,4 Kg; Série c) Cyperus 24 Kg e 15 Kg. O estudo mostrou que o substrato promoveu alterações na eficiência e eficácia da retenção e remoção de nutriente, crescimentos dos vegetais, produção de matéria seca e qualidades da água efluente / Abstract: The study was conducted in the experimental field of the Faculty of Agricultural Engineering, State University of Campinas, Campinas, SP, geographical position defined by coordinates 22° 53' 22" LS and 47° 04' 39" LW. The study examined whether the use of bauxite electrofusion crusts, as a substrate in constructed wetlands with emergent vegetables Typha sp, Canna limbata and Cyperus prolifer, interferes on the dynamics of pH, phosphorus and nitrogen present in domestic wastewater. It was used 6 artificial beds, consisting of 3 sets of two units with vertical flow and subsurface outflows, nominated by Typha series, 3.1 and 3.2 beds; series Canna, 2.1 and 2.2 beds, series Cyperus, 1.1 and 1.2 and filled with Bauxite electrofusion crusts. The size of each bed was 4 meters long by 3 meters wide by 1 meter high, totaling 12 m³. In each series the vegetables Typha sp, Canna limbata and Cyperus prolifer were planted respectively. The monitoring period was from September 2009 to February 2010. The performance was evaluated considering the development of plants, the chemical quantities and qualities of wastewater. The waters were collected weekly, on random days, at the entrances and exits of the beds during the monitoring period; the plants were harvested only once, at the end of each period. The average daily flow rates and average pH occurred during this period, observed in the tributary and the outflow of the series Typha were 962 l/day, 864 l/day and 804 l/day, the pH were 6.9, 8.6 and 9.0. In the series Canna flow rates were 954 l/day, 797 l/day and 735 l/day, the pH were 6.9, 9.2 and 9.3. In the series Cyperus flow rates were 792 l/day, 723 l/day and 664 l/day, the pH were 6.9, 9.0 and 9.1. The hydraulic detention time, considering the beds in the series cited were 4.2 days and 4.6 days, 4.0 days and 4.6 days and 4.3 days and 4.4 days. The average percentage of total nitrogen retention in the beds, considering the masses that came through the tributaries during the monitoring period was: a) Series Typha 27% e19% b) Series Canna 35% and 19%, c) Series Cyperus 32% and 21%. The removals conducted by the plants were : a) Series Typha 26% and 9%, b) Series Canna 42% and 11%; Series Cyperus 22% and 15%. Regarding the phosphorus, the average percentage of retention, considering the masses that entered the bed through the tributaries was: a) Series Typha 70% and 31%, b) Canna Series 73 and 19%; Series Cyperus 74% and 27 %. The removals conducted by the plant were: a) Series Typha 11% and 4%, b) Series Canna 17% and 4%, c) Cyperus Series 7% and 11%. The total dry plant mass produced were: a) Series Typha 39.9 Kg is 11.2 Kg b) Series Canna 50.5 kg is 26.4 kg; Series c) Cyperus 24 Kg is 15 Kg. The study has shown that the substrate promoted changes in the efficiency and effectiveness of nutrient removal and retention, growth of vegetables, dry material production and quality of effluent water / Mestrado / Análise Ambiental e Dinâmica Territorial / Mestre em Geografia

Red clover (Trifolium pratense L.) cvs 'Altaswede' (2n=2X=14) and 'Norseman' (2n=4X=28) were used in the present study to investigate tissue culture initiation, plant regeneration and the occurrence of somaclonal variation. Hypocotyl explants of aseptic seedlings were inoculated into L2 medium containing 0.06 mg/1 Picloram and 0.1 mg/1 benzyladenine for callus induction. Calli were usually induced after two weeks of culture. Callus induction frequency was 60% to 85% of the explants cultured with 'Altaswede' showing a slightly higher frequency than 'Norseman'. Satisfactory results were obtained under dark or light conditions using either test tubes or petri plates, as culture vessels. After callus induction, an experiment was conducted to regulate shoot induction by subculturing the calli on L2 medium containing 0.01 mg/1 2,4-dichlorophenoxy acetic acid and 2 mg/1 adenine (LSE) and on B₅ medium containing 2 mg/1 naphthalene acetic acid and 2 mg/1 adenine, media which have been reported to be shoot-supportive. However, both media failed to initiate shoots under the present experimental conditions. Further tests confirmed that LSE medium did not induce shoots from these calli and that callus growth on LSE medium steadily deteriorated over several subcultures. Subsequently, various media were tested with an emphasis on different combinations of growth regulators. Root differentiation from these calli was frequently observed. Shoots were initiated from some calli when they were transferred from SCP medium to media containing naphthalene acetic acid and kinetin. Embryogenic callus of one genotype was selected and maintained on LSP medium, leading to the regeneration of numerous plants. Supplementation with arginine, glutamic acid and casein hydrolysate did not show a significant effect on callus growth and differentiation. The source of callus influenced rates of growth and the occurrence of differentiation. Usually 'Norseman' calli grew faster and produced more roots than 'Altaswede' calli, while shoots were induced only from 'Altaswede' calli. Although 'Norseman' had more shoot tips induced to produce multiple shoots, the multiple shoot number per culture of 'Altaswede' was higher than that of 'Norseman'. Shoot tip cultures were also established to induce multiple shoots and to regenerate plants via root organogenesis. Regenerants from initial multiple shoots (RG1), multiple shoots after two subcultures (RG2), three-month calli (RG3) and one-year calli (RG4) were evaluated for chromosome number stability, morphology and several biochemical traits. When 'Altaswede' plants were analysed for chromosome number, RG1 and RG3 plants were normal, while one RG2 plant and 23% of 119 RG4 plants had tetraploid chromosome numbers. Regenerated plants were quite stable regarding their isozyme patterns of malate dehydrogenase, 6-phosphogluconate dehydrogenase, phosphoglucose isomerase, phosphoglucomutase and shikimate dehydrogenase and their nodule leghaemoglobin profiles. Morphologically, the leaflet length to width ratio of RG1, RG2 and RG3 plants of 'Altaswede' showed significantly more variation than control plants (P≤0.01), while RG4 plants of 'Altaswede' and RG1 and RG2 plants of 'Norseman' were not different from control plants. It is suggested that the absence of detectable differences in the RG4 'Altaswede' plants was a consequence of their origin from one original genotype. Variability and stability of regenerated plants are discussed. / Land and Food Systems, Faculty of / Graduate

Orientador: Sarita Leonel / Banca: Marco Antonio Tecchio / Banca: Jackson Mirellys Azevedo Souza / Resumo: As propriedades físicas e químicas dos substratos são fatores que podem influenciar no desenvolvimento de mudas cítricas. Objetivou-se verificar o quanto as proporções de mistura influenciam no desenvolvimento de portaenxertos cítricos até a fase de enxertia e vir a ser novas formulações para citros. O presente trabalho foi dividido em dois experimentos, sendo realizados no viveiro da Faculdade de Ciências Agronômicas, Departamento de Ciência Florestal, em Botucatu - SP. No experimento 1, avaliou-se o desenvolvimento do portaenxerto citrumeleiro 'Swingle' em substratos com as seguintes composições: substrato comercial granulometria fina (1); substrato comercial granulometria superfina (2); substrato 50% turfa sphagnum, 30% vermiculita fina, 20% casca de arroz (3); substrato 50% turfa sphagnum, 30% vermiculita superfina, 20% casca de arroz (4); substrato 50% turfa sphagnum, 20% vermiculita fina, 30% casca de arroz (5); substrato 50% turfa sphagnum, 20% vermiculita superfina, 30% casca de arroz (6). Este experimento foi subdividido em duas fases: sementeira (fase 1) e viveiro (fase 2). Na fase 1, o delineamento utilizado foi inteiramente casualizado com seis combinações de substrato, quatro repetições e 51 plantas por parcela experimental. Quando as plantas estavam aptas ao transplantio para sacolas, foram analisadas ao acaso, 8 plantas por tratamento. Na fase 2, o delineamento experimental utilizado foi o inteiramente casualizado, tendo-se seis substratos com quatro repetições... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The physical and chemical properties of substrates are factors that can influence some development of citrus seedlings. It was verified how much these proportions of mixture can influence the development of 'Swingle' citrumelo rootstock until grafting and if it can be new formulations for citrus. The present work was divided in two experiments, being realized in the plants nursery of the São Paulo State University, Department of Foresty Science in Botucatu-SP. In experiment 1, the development of the 'Swingle' citrumelo rootstock on substrates with the following compositions: commercial substrate granulometry fine (1); commercial substrate granulometry superfine (2), Substrate 50% peat moss, 30% vermiculite fine, 20% rice husk (3); Substrate 50% peat moss, 30% vermiculite superfine, 20% rice husk (4); Substrate 50% peat moss, 20% vermiculite fine, 30% rice husk (5); Substrate 50% peat moss, 20% vermiculite superfine, 30% rice husk (6). The experiment 1 was subdivided into two phases: sowing period (period 1) and seedlings nursery (period 2). The treatments were arranged in a completely randomized design in 6 x 4, with 51 plants per replications in the period 1. It was analysed eight plants per repetition when the plants are able to transplant for containers. The second period was arranged in a completely randomized design, with 6 substrates types, 4 repetitions composed by 20 plants. Every 28 days were collected 3 plants per repetition for analyses. It was concluded the substrates with 30% rice husk weren't satisfactory for the development of 'Swingle' citrumeleiro. The substrates 1 (commercial substrate granulometry fine), 2 (commercial substrate granulometry superfine) and 4 (Substrate 50% peat moss, 30% vermiculite superfine, 20% rice husk) provided a better development of the rootstock until grafting period, according to the management used. In the second experiment, it was evaluated if the ... / Mestre

In the province of Chimborazo, found in the Riobamba canton, a study was done with the purpose of comparing different subtracts for the production of earthworm humus (pig feces, guinea pig feces, rabbit feces, bovine feces, market residues, and vegetable residues from the harvest) and its productive effect in vegetables (radish, onion, beet and cabbage). Twenty-four beds, 1.5 m2 (1.5 x 1) in size, as well as sixteen 3 m2 (1 x 3) parcels were used for the study. A design of complete blocks was applied with a monofactorial in the first test, and a bifactorial in the second test. The experiment lasted forty weeks. In general, the best productive behavior by the earthworm humus was distributed among various subtracts. The vegetable residues had the best final weight with a value of 66.75 Kg/parcel. The treatment with guinea pig feces had the best nitrogen content (0.29%). Bovine feces had the best phosphorus content (1.08%). Rabbit feces produced 10.6% of potassium as well as the highest number of earthworms in the harvest (6,900,00). With regards to the production of vegetables, cabbage responded well to almost all of the variables studied. Cabbage obtained superior values than the rest of the vegetables with a 99.5% capture and a 0.25% mortality. The other variables could not be compared because different types of vegetables were used. In the total economic analysis, it was seen that there was a expenditure of 851,960.00 sucres against an income, from the sale of humus and vegetables, of 1,065,000.00 sucres. The net income was 213,120.00 sucres and the benefit/cost was 1.21. It is recommended that this technique be used for small scale production, because the humus improves the ground's physical and chemical characteristics, thus obtaining representative economic gains.

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