外源激素和病原侵染对采后葡萄呼吸速率及组织内源激素的影响

葡萄采后施用外源ABA可显著刺激其呼吸速率和乙烯释放率，ABA对呼吸的促进作用大于C2H4；当葡萄被交链孢和灰霉葡萄抱侵染后，呼吸和乙烯释放均加强。交链孢侵染的葡萄呼吸速率在孢子形成后2d达最大值，而灰霉葡萄孢侵染的葡萄呼吸速率在孢子形成时即达最大值。葡萄感病后，落粒现象加重，组织内源ABA和C2H4含量增加，IAA和GA3含量减少。

The Effect of Exogenous Hormones and Fungi Infection on the Respiration Rate and Endogenous Hormones of Postharvest Grape Fruit

The respiratin and enthylene evolution rates in harvested grapes were markedly stimulated by exogenus ABA (Figs. 1, 2 ), and increased after being infected by fungi (Figs. 3, 4 ). The respiration rate stimulated by ABA was higher than that by C2H4 (Fig. 2 ). The levels f endogenus ABA and C2H4 in grapes were increased and those of endogenous IAA, GA3 decreased after the grapes were infected by fungi (Table 1 ).