套袋长富2苹果去袋后果实发育及内源激素含量的变化

Study on the development of bagging changfu 2 fruit and the changes of endogenous hormones content after bag removal

为阐明去袋对套袋长富2苹果果实发育的影响并为合理确定去袋时间提供理论依据，利用毛细管电泳技术，测定了套袋的长富2苹果去外袋后，果实及种子内源激素的变化，分析了果实去袋后果实横径迅速膨大的原因。结果表明，套袋的长富2苹果去袋后5～10d，果实横径迅速膨大。与未套袋果相比，套袋果去袋后，果肉的生长素、玉米素、赤霉素含量迅速升高，脱落酸变化不大；种子的生长素含量迅速升高，其他3种内源激素变化不明显。

In order to show the effect on the development of bagging changfu 2 fruit by removing bag and provide evidence for choosing time of bag removal, the hormones content of pulp and seeds in bagging Changfu 2 apple were measured by capillary electrophoresis and the reason of fruit diameter expanded quickly was investigated after the bag was removed. The results showed that fruit diameter expanded quickly from 5 to 10 days after the bag was removed. The contents of IAA,GA,Zt （zeatin） in pulp increased quickly from 5 to 10 days after the bag was removed, ABA content did not chang much; The IAA content in seeds of bagging fruit increased quickly 5 days after the bag was removed, but the GA,Zt,ABA contents in seeds did not change much after the bag was removed.