Influência da pré-Hidratação em sementes de soja na eficiência do teste de condutividade elétrica / Influence of the pré-hydration in soybean seeds in the efficiency of the electrical conductivity test

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The present work purpose to evaluate the influence of the pré-hydration in the efficiency of the electrical conductivity test in the evaluation of the physiological seeds potential of soybean seeds. Seeds of six lots of cv. BRS - 231, the uniform size retained in the sieve 6,5mm were submitted to the pré-hydration treatments in saturated atmosphere and in humidified substratum, for 3, 6, 9 and 12 hours, before the immersion in water and posterior reading of the electrical conductivity test the 18 and 24 hours. The seeds were stored in not controlled conditions of atmosphere by 180 days, with evaluation of the quality in two times, to the zero and 180 days. The quality of the lots was evaluated by the determination of water content and stand germination, of cold test without soil, of accelerated aging, electrical conductivity test without pré-hydration after 18 and 24 hours and seedling emergence in the field. The methods of pré-hydration saturated atmosphere and humidified substratum are able to improve the efficiency of the test of electric conductivity, when compared directly with seeds soaked in pré-hydration water. Times, starting from six hours up to twelve hours they can be used for identification of differences less accentuated in the physiological quality, of soybean seeds for readings after 18 and 24 hours of imbibition.

ASSUNTO(S)

glycine max imbibition soybean condutividade elétrica vigor sementes glycine max melhoramento de plantas forrageiras e producao de sementes vigor embebição seeds

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