黄瓜(Cucumis sativus L.)性别表达与ACC含量,EFE活性,及内源激素的变化

Sex Expression of Cucumber ( Cucumis sativus L.) Plant and the Changes of Content of ACC, GA, ABA and EFE Activity

利用外源ＧＡ３和乙烯利处理黄瓜（ＣｕｃｕｍｉｓｓａｔｉｖｕｓＬ．）植株，使性别表达雄性化或雌性化的同时，其内源乙烯的释放量、ＡＣＣ，ＧＡ１～３和脱落酸的含量，以及乙烯形成酶活性均发生了变化。外源ＧＡ３雄性化处理，使内源ＧＡ１～３含量和ＧＡ１～３／脱落酸值增加，乙烯释放量和ＡＣＣ含量降低。乙烯利雌性化处理的作用则相反。外源的ＧＡ３和乙烯利对内源ＡＣＣ水平的影响可能是其对黄瓜性别表达作用的生理学原因。

After the induction toward maleness or femaleness of cucumber ( Cucumis sativus L.)plant with exogenous GA 3 or ethrel treatments, the endogenous levels of ethylene, ACC, GA 1￣3 , ABA and EFE activity all changed. As the induction toward maleness with GA 3, the endogenous level of GA 1￣3 and GA 1￣3 /ABA increased while the levels of ACC and ABA decreased. The effects of induction toward femaleness with ethrel were just the opposite. The effects of exogenous of GA 3 or ethrel on the levels of ACC seem to be the physiological cause of sex shift of cucumber plant.