A produção de mudas de maracujazeiro-azedo (Passiflora edulis Sims.) depende da disponibilidade de sementes de alta qualidade fisiológica, genética e fitossanitária. O objetivo deste trabalho foi sistematizar indicações técnicas para a determinação do ponto de colheita, manejo e conservação das sementes de maracujazeiro-azedo ‘SCS437 Catarina’. A produção de sementes deve ser a partir de frutos completamente maduros de plantas selecionadas. A remoção do arilo deve ser manual, com auxílio de uma peneira. A secagem deve ser realizada à sombra, em ambiente ventilado, sobre papel. Pode-se utilizar embalagens permeáveis e impermeáveis para a conservação das sementes, tanto em temperatura ambiente (máximo três meses, quanto em geladeira (até um ano). A semeadura pode ser de forma direta, nos recipientes de produção das mudas ou em bandejas de 128 células, para posterior transplantio aos recipientes definitivos.
The passion fruit (Passiflora edulis Sims.) propagates by sexual reproduction and presents slow and uneven seed germination. This work has the goal of identifying a temperature and photoperiod that provide greater germination of the cultivar SCS 437 Catarina. We used an entirely randomized experimental design in a 2 x 3 + 1 factorial: two temperatures (alternating between 20/30 ºC and constant 25 ºC) and three photoperiods (8/16 – 8 hours of light and 16 hours of darkness; 12/12 – 12 hours of light and 12 hours of darkness; and absence of light), and for alternating temperature, an absence of light treatment was added, being classified as neutral photoblastic, and at a constant temperature of 25 ºC made germination unfeasible, while the 20/30 ºC alternating temperatures provided an average germination of 75%. The seeds showed an indifferent behavior to light, and the temperature alternated with 12/12 h photoperiod was the ideal condition to promote a higher percentage of germination.
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