This work had the objective to determine the best temperatures and time of exposure for evaluating vigor in sorghum seeds submitted to accelerated aging chambers, and the effects of the seed localization from different parts to the panicle upon vigor or quality. The cultivar tested was BR-501, harvested at 26th, 40th and 54th day after flowering. Panicle were divided into three sections: uper, medium and lower parts, and seeds evaluated for germination and vigor. Periods of accelerated aging, were 24, 48, 72 and 96 hours, with temperatures of 40oC, 42oC and 45oC at 100% of R.H. Those tests were conducted after harvesting and after four months of controled storage. The accelerated aging test up 96 hours of exposure was not effective for vigor evaluation on seeds with high initial germination; seeds originated from the three different panicle sections does not showed differents problems in their physiological quality when harvested at 54 days after flowering; the seed quality was not affected during the storage period studied; and the seed dormancy was overcome when harvested before the physiological maturation point.