研究了青梅果实采后果肉硬度、乙烯释放量及抗氧化酶活性变化。结果显示 ,果肉硬度 3d后急剧下降 ,5～ 7d下降最快 ,而乙烯释放量 5d后则迅速上升 ,于第 9天达到高峰 ,果实硬度下降与乙烯释放上升呈显著负相关 (r =- 0 782 3)。SOD和POD活性于采后 3d开始迅速升高 ,第 5天同时达到峰值。CAT活性一直下降 ,第 5天后检测不出。MDA含量呈峰型变化。 The fruit firmness, ethylene release and antioxidant enzyme activity were studied after harvest. The results showed that after 3 days, the fruit firmness decreased sharply and decreased rapidly from 5 to 7 days, while ethylene release rapidly increased after 5 days and peaked on the 9th day. There was a significant negative correlation between fruit hardness and ethylene release (r = - 0 782 3). The activities of SOD and POD increased rapidly at 3d post-harvest, and peaked at the 5th day. CAT activity has been declining, undetectable after 5 days. MDA content showed a peak change.