Made available in DSpace on 2014-06-11T19:33:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-07-06Bitstream added on 2014-06-13T18:45:41Z : No. of bitstreams: 1 jesus_n_dr_jabo.pdf: 1379644 bytes, checksum: 1b6e6429ce707d7744bfc24ff6b5c794 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A introdução de espécies ou suas seleções melhoradas são de grande interesse para a fruticultura brasileira, pois principiam um mercado em potencial que é pouco explorado. Dentre elas, pode-se destacar a longan (Dimocarpus Longan Lour), também conhecida como longana ou “olho do dragão”. Originária do Sudeste Asiático, mais precisamente da zona subtropical da China, pertence à família Sapindácea. Acha-se distribuída em todas as regiões subtropicais do mundo, os frutos são globosos, de sabor agradável, adocicado e polpa translúcida; quando maduros possui coloração castanha e sabor menos pronunciado que a lichia. Poucas são as informações técnicas sobre esta cultura, principalmente no Brasil. O objetivo deste trabalho foi avaliar plantas quanto às características dos frutos, semeadura e a clonagem por estaquia desta espécie. Seis plantas, do Banco Ativo de Germoplasma da FCAV, foram avaliadas quanto ao desenvolvimento e características físicas (diâmetros transversal e longitudinal (mm) e massas, em g, do fruto, casca, polpa e semente) e químicas (acidez titulável, sólidos solúveis, ácido ascórbico e ratio) dos frutos. As sementes extraídas manualmente, de frutos maduros, foram lavadas em água corrente e semeadas em canteiros de areia sob condições de ripado (50% de luminosidade). Observou-se a influência de diferentes períodos (0, 14, 28 e 42 dias) e condições de armazenamento em câmara fria (10ºC e 60% UR), câmara seca (16-18ºC e 60-70% UR), dessecador contendo sílica-gel e ambiente. Estacas enfolhadas de ramos herbáceos, coletadas em três épocas (primavera, verão e outono), tratadas com ácido indolbutírico (AIB): 1.000; 3.000; 5.000; 7.000 mg.L-1 e testemunha foram avaliadas quanto a sua capacidade de formação de raízes, sob condições de câmara de nebulização intermitente... / The introduction of exotic species or their improved selections are highly interesting to Brazilian fruit farmers, since these species open an unexplored market. Among these species is longan (Dimocarpus Longan Lour), also known as longana, which is originated from Southeast Asia, more specifically from subtropical zone of China, and belongs to the family Sapindaceae. It is distributed in all subtropical regions of the world. The fruits are globe-shaped, of pleasant and sweet taste and translucid pulp. At maturity, fruits are wood-colored and a taste blander than litchi. There is little information on this fruit species, especially in Brazil. This work was undertaken to evaluate fruit characteristics, seeding and cutting of this species. Six plants from the Active Germplasm Bank of FCAV were analyzed in terms of fruit development, physical (transversal and longitudinal diameter, in mm, eand fruit, peel, pulp and seed mass, in g) and chemical traits (titrable acidity, soluble solids, ascorbic acid and ratio). Manually extracted seeds from mature fruits were washed in water flow and sowed in sand under fifty percent shading. The influence of several periods (0, 14, 28 and 42 days) and storage conditions: in cool-chamber (10ºC e 60% RH), dry-chamber (16-18ºC and 60- 70% RU), dryer containing silica-gel and environment conditions. Cuttings containing leaves from herbaceous branches, collected in three different (spring, summer and fall) and treated with indolbutiric acid (IBA): 1,000; 3,000; 5,000; 7,000 mg.L-1 and control were evaluated for their rooting capacity under intermittent nebulization chamber conditions. The crop cycle in Jaboticabal was found to be 120 to 130 days and plant 6 showed the best results, and can be grown or used in breeding programs. The best seedling emergence results were found in seeds form plant 5, which can be used as rootstocks... (Complete abstract, click electronic access below)

Orientador: Antonio Baldo Geraldo Martins / Banca: José Antonio Alberto da Silva / Banca: João Alexio Scarpare Filho / Banca: Jose Carlos Barbosa / Banca: Luiz de Souza Corrêa / Resumo: A introdução de espécies ou suas seleções melhoradas são de grande interesse para a fruticultura brasileira, pois principiam um mercado em potencial que é pouco explorado. Dentre elas, pode-se destacar a longan (Dimocarpus Longan Lour), também conhecida como longana ou "olho do dragão". Originária do Sudeste Asiático, mais precisamente da zona subtropical da China, pertence à família Sapindácea. Acha-se distribuída em todas as regiões subtropicais do mundo, os frutos são globosos, de sabor agradável, adocicado e polpa translúcida; quando maduros possui coloração castanha e sabor menos pronunciado que a lichia. Poucas são as informações técnicas sobre esta cultura, principalmente no Brasil. O objetivo deste trabalho foi avaliar plantas quanto às características dos frutos, semeadura e a clonagem por estaquia desta espécie. Seis plantas, do Banco Ativo de Germoplasma da FCAV, foram avaliadas quanto ao desenvolvimento e características físicas (diâmetros transversal e longitudinal (mm) e massas, em g, do fruto, casca, polpa e semente) e químicas (acidez titulável, sólidos solúveis, ácido ascórbico e ratio) dos frutos. As sementes extraídas manualmente, de frutos maduros, foram lavadas em água corrente e semeadas em canteiros de areia sob condições de ripado (50% de luminosidade). Observou-se a influência de diferentes períodos (0, 14, 28 e 42 dias) e condições de armazenamento em câmara fria (10ºC e 60% UR), câmara seca (16-18ºC e 60-70% UR), dessecador contendo sílica-gel e ambiente. Estacas enfolhadas de ramos herbáceos, coletadas em três épocas (primavera, verão e outono), tratadas com ácido indolbutírico (AIB): 1.000; 3.000; 5.000; 7.000 mg.L-1 e testemunha foram avaliadas quanto a sua capacidade de formação de raízes, sob condições de câmara de nebulização intermitente... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The introduction of exotic species or their improved selections are highly interesting to Brazilian fruit farmers, since these species open an unexplored market. Among these species is longan (Dimocarpus Longan Lour), also known as longana, which is originated from Southeast Asia, more specifically from subtropical zone of China, and belongs to the family Sapindaceae. It is distributed in all subtropical regions of the world. The fruits are globe-shaped, of pleasant and sweet taste and translucid pulp. At maturity, fruits are wood-colored and a taste blander than litchi. There is little information on this fruit species, especially in Brazil. This work was undertaken to evaluate fruit characteristics, seeding and cutting of this species. Six plants from the Active Germplasm Bank of FCAV were analyzed in terms of fruit development, physical (transversal and longitudinal diameter, in mm, eand fruit, peel, pulp and seed mass, in g) and chemical traits (titrable acidity, soluble solids, ascorbic acid and ratio). Manually extracted seeds from mature fruits were washed in water flow and sowed in sand under fifty percent shading. The influence of several periods (0, 14, 28 and 42 days) and storage conditions: in cool-chamber (10ºC e 60% RH), dry-chamber (16-18ºC and 60- 70% RU), dryer containing silica-gel and environment conditions. Cuttings containing leaves from herbaceous branches, collected in three different (spring, summer and fall) and treated with indolbutiric acid (IBA): 1,000; 3,000; 5,000; 7,000 mg.L-1 and control were evaluated for their rooting capacity under intermittent nebulization chamber conditions. The crop cycle in Jaboticabal was found to be 120 to 130 days and plant 6 showed the best results, and can be grown or used in breeding programs. The best seedling emergence results were found in seeds form plant 5, which can be used as rootstocks... (Complete abstract, click electronic access below) / Doutor

Abstract Plant Growth Regulator Sprays and Girdling: Potential Horticultural Techniques to Increase Fruit Retention and Yield of Longan (Dimocarpus longan Lour.) Trees in California Leila Graves June 2009 The longan is a subtropical fruit tree whose popularity is growing quickly among American consumers, and thus, could become a lucrative niche market for California growers. Trees planted as part of an initial variety trial conducted in commercial California orchards are beginning to bear fruit. However, fruit retention and yields are low due to excessive abscission during early fruit set. Horticultural techniques, such as plant growth regulator (PGR) sprays and girdling, often increase fruit retention and yield of fruit tree crops, though effects are typically dependent on treatment timing and PGR concentration. The objective of this study was to identify PGR and girdling techniques that result in increased longan fruit retention. The experiment was conducted in a commercial orchard using a randomized complete block design with whole-tree experimental units and five replications per treatment. Treatments included foliar applications of two synthetic auxins, 1-naphthaleneacetic acid (NAA) at 20, 60, or 100 ppm or 2,4-dichlorophenoxyacetic acid (2,4-D) at 5, 25, or 45 ppm, each applied during early or late fruit set. Girdling was also conducted at early or late fruit set, for a total of 15 treatments, including an untreated control. Factors examined at harvest included fruit number and mass per inflorescence and individual fruit mass and diameter. During the on-crop year, a significant increase in the number and mass of fruit per inflorescence was observed in response to 25 ppm 2,4-D applied at late fruit set, as compared to the control. Despite this increase in fruit number, 25 ppm 2,4-D applied at late fruit set did not result in decreased diameter and mass of individual fruit. Late fruit set applications of 25 ppm 2,4-D appear to mitigate the effects of alternate bearing in the off-crop year. Fruit abscission during early and/or late fruit set decreased in response to 5 ppm 2,4-D at early fruit set, 25 or 45 ppm 2,4-D at early or late fruit set, or 100 ppm NAA at early fruit set. Fruit loss occurred as a result of Santa Ana winds during both growing seasons. Neither leaf nor fruit nutrient concentrations of treated trees were significantly different from that of untreated controls. Results indicate that properly-timed PGR applications have the potential to be used commercially to increase yield and profit to longan growers in California.