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      Conservação de sementes de maracujá-amarelo: interferências do teor de água das sementes e da temperatura de armazenamento Translated title: Conservation of yellow passion fruit (Passiflora edults Sims f. flavicarpa Deg.) seeds: interference of water content and storage temperature

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          Abstract

          Buscando embasamento para a definição de alternativas tecnológicas voltadas a desacelerar a deterioração durante o armazenamento, a pesquisa objetivou estudar, através de variações no teor de água das sementes e na temperatura do ambiente de armazenamento, o comportamento fisiológico de sementes de maracujazeiro. O experimento, realizado entre julho de 2002 e agosto de 2003 no Laboratório de Análise de Sementes localizado na Escola Superior de Agricultura Luiz de Queiroz (USP), foi realizado com sementes de maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.) produzidas em Mogi Mirim/ SP a partir de polinização aberta entre híbridos da Série IAC 270. Após a retirada da mucilagem das sementes, foi determinado o grau de umidade inicial do lote e, paralelamente, obtida a amostra representante do tratamento com o maior teor de água estudado (31%). As sementes remanescentes foram submetidas à secagem, em estufa com circulação de ar a 30ºC ± 3ºC, para a obtenção dos demais tratamentos referentes aos teores de água desejados (27%, 21%, 17%, 11% e 7%). Posteriormente, os tratamentos, correspondentes aos diferentes graus de umidade, foram armazenados em câmaras com temperaturas controladas de 10ºC, 15ºC e 20ºC. Antes do armazenamento, e após 35, 70, 105, 140, 175, 210, 245, 280, 315 e 350 dias, as sementes foram submetidas às avaliações da qualidade. De acordo com os resultados, a combinação do grau de umidade de 7% com a temperatura de 10ºC supera as demais no favorecimento à manutenção do potencial fisiológico das sementes de Passiflora edulis Sims f. flavicarpa Deg.

          Translated abstract

          In order to define technological alternatives foward delaying deterioration of passion fruit (Passiflora edulis Sims f. flavicarpa Deg.) seeds during storage, physiological studies were performed through varied seed water content and environmental temperature. The experiments were conducted at the Seed Analysis Laboratory of the Escola Superior de Agricultura Luiz de Queiroz - USP, from July 2002 through August 2003, with yellow passion fruit seeds produced in Mogi Mirim/ SP, through random pollination among IAC 270 Series hybrids. Following seed mucilage removal, the initial moisture degree of the lot was determined and the representative sample of the treatment with the highest water content studied (31%) was obtained concurrently; the remaining seeds were dried in an air-circulating oven at 30ºC ± 3ºC to achieve other treatments regarding the intended water contents (27%, 21%, 17%, 11% and 7%). Further, the treatments - corresponding to different moisture levels - were stored in controlled-temperature chambers at 10 ºC, 15 ºC and 20 ºC. Previous to storage and 35, 70, 105, 140, 175, 210, 245, 280, 315 and 350 days later, the seeds were submitted to quality assays. The results indicate that the combination between 7% moisture degree and 10ºC temperature overcomes the remaining ones, favoring the maintenance of the physiological potential of Passiflora edulis Sims f. flavicarpa Deg. seeds.

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          Regraspara análise de sementes

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            Regras para análise de sementes

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              Insect nutrition: current developments and metabolic implications.

              R H Dadd (1972)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                brag
                Bragantia
                Bragantia
                Instituto Agronômico de Campinas (Campinas )
                1678-4499
                2005
                : 64
                : 2
                : 273-289
                Article
                S0006-87052005000200015
                10.1590/S0006-87052005000200015
                e2741ac5-60fa-4ba8-b628-2046a7f2c111

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0006-8705&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                Passiflora edulis,seeds,water content,storage,teor de água,sementes,conservação,armazenamento,conservation

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