套袋长富2苹果去袋后果实发育及内源激素含量的变化

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5~10 d,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。

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

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.