This research was carried out in the Laboratory of Seeds Technology and Analysis
of the Fitotecnia Department of the Agrarian Science Center of Federal University of Espirito
Santo, Alegre, Espirito Santo State, Brazil, out with the objective to evaluated the physiological
seed quality to ten soybean genotypes: BRSMG - Garantia, MGBR-46 (Conquista), MGBR
94-7916, FT-104, CAC-1, MGBR 95-19125, BRSMG - 68 (Vencedora), UFV-16, BR 94-12773,
Doko, from the 99/2000 crop year, submitted the stress condition through the accelerated aging
test, with temperature of 42ºC and relative humidity of, approximately, 100% for periods of 0, 24,
48, 72 and 96 hours, utilized the completely randomized design, with four replications of 25
seeds. The physiological quality of seeds was evaluated through by the germination and vigor test
(first germination count and radicule length. The results indicate that the genotypes Doko
and CAC-1 showed the best physiological seed quality. In order to the accelerated ageing periods
above 48 hours determinate results with higher seed deterioration. The total germination decreased
until the period of 96 hours of treatment.