杂交水稻和不育系种子在人工加速老化处理后,其发芽率、发芽指数和活力指数均比常规水稻种子下降迅速。在人工老化过程中,前者种子浸泡液的外渗氨基酸和钾离子含量均比后者高,游离的有机酸、氨基酸和脂肪酸含量增加的速度相似,均大于常规水稻种子。蛋白酶活性和可溶性蛋白质含量的增减,在易发生劣变种子与常规水稻种子之间均有显著差异。 After artificial accelerated aging treatment, the germination rate, germination index and vigor index of hybrid rice and CMS line decreased rapidly compared with conventional rice seeds. In the process of artificial aging, the contents of extravasation amino acids and potassium ions in the seed soaking liquid of the former were higher than those of the latter, and the content of free organic acids, amino acids and fatty acids increased more rapidly than the conventional rice seeds. Changes in protease activity and soluble protein content were significantly different between susceptible and deteriorated seeds and conventional rice seeds.