Effects of storage on germination ofDioscorea composita (Dioscoreaceae) seeds
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Abstract
Effects of storage were tested on germination ofDioscorea composita (Dioscoreaceae) seeds. Freshly collected seeds and seeds stored at 25°C in paper bags from 1 to 11 mo or for 4 and 5 yr were used in most of the experiments. Seeds were tested for germination at 20, 25, 30, 35, 25–20, and 25–35°C in white light and in darkness. Initiation of germination was delayed in freshly harvested seeds, and dormancy was reduced in seeds stored for about 9 mo. Viability of the seeds decreased after 4 and 5 yr of storage.
Keywords
Economic Botany Diosgenin Mese Storage Duration Inverted TriangleEfeito do Armazenamento na Germinação de Sementes deDioscorea composita (Dioscoreaceae)
Resumen
Os efeitos do armazenamento foram verificados na germinação de sementes deDioscorea composita. Sementes recém-coletadas e outras armazenadas, de 1 a 11 meses ou de 4 e 5 anos, em sacos de papel at 25°C eram usadas nos testes. A germinação era testada, em condiçöes de luz branca e escuro nas temperaturas de 20, 25, 30, 35, 25–20, 25–30, e 25–35°C. O início da germinação era mais tardio para sementes recém-coletadas. A dormência era reduzida com sementes armazenadas por 9 meses. A viabilidade das sementes diminuia após armazenamento por 4 ou 5 anos.
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