病原侵染对采后葡萄激素水平的影响

外源ABA处理采后葡萄可显著促进乙烯释放和抑制IAA的生成，加重葡萄落粒。乙烯利对ABA促进作用不明显，但显著抑制IAA和GA3的生成。葡萄感病后组织内源激素水平发生了变化：ABA含量显著增加，乙烯释放率增大，IAA含量显著减少，这种变化趋势在果梗中尤为突出。

Changes of Endogenous Hormones in Postharvest Grape After Infected with Pathogenic Fungi

The ethylene evolution rate ofgrape was Inaredly intensffied while theIAA content in mp was decreased, after the mp was beated by exogenousABA (Fig. 1 ). Postharvest grape benydrip was promoted by exogenous ABA(Fig. 2). It was found that ethephon hadlitile affect on the ABA content in grape,but it inhibited the production of IAAand GA(Fig. 1 ). The ANA content andethylene evohihon rate in pp weremarkedly increased and IAA content wasmarkedly reduced after the mp was in-fected by fungi (Figs. 3, 4). These re-sults suggest that the ABA content inbeny and Pedicel play an important rolein the abscission of betries When thepostharvest grape is infected withpathogenic fungi.