Teste de envelhecimento acelerado na predição da qualidade fisiológica de sementes de soja armazenada

Abstract

The work hypothesis is based on the idea that the accelerated aging test allows predicting the behavior of seeds during storage. The objective of this work is to evaluate whether the accelerated aging test is efficient to predict the behavior of soybean seeds during different periods and storage conditions. The experimental design used was completely randomized in a 2 x 2 factorial scheme (two storage times: 0 and 60 days, and two temperatures: 18 and room temperature). To compose the samples, two commercial soybean seed varieties were used, cultivar Maracaí and 98Y31. At time zero and at time of 60 days the seeds were submitted to the germination and tetrazolium test. The seeds were aged every 12 hours, starting at 24 hours and totaling 96 hours of aging. After each aging time, the seeds were submitted to the germination test. The data obtained were subjected to analysis of variance, with comparison of means using the Tukey test at 5%

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probability. The accelerated aging test is not efficient to predict the behavior of soybean seeds of the 98Y31 and Maracaí varieties during different storage periods.