休眠‘蔡家坡’蒜内源激素水平的变化规律

Effect of Endogenous Hormones on the Dormancy of Garlic ( Allium Sativum L. )

将休眠‘蔡家坡’蒜放于5、20、35℃下贮藏,研究休眠和内源激素的变化。结果表明:5℃可以尽快打破休眠,35℃则延长休眠;休眠蒜瓣内同时存在五大内源激素;在解除休眠过程中,乙烯释放量始终保持较高水平;3种温度处理,内源脱落酸(ABA)水平呈上升趋势,其中以5℃处理的脱落酸水平最低;内源赤霉素(GA3)水平以5℃处理的较高,35℃处理的最低;内源吲哚乙酸(IAA)和细胞分裂素(CTK)水平在休眠初期即达最高值,休眠中期呈下降趋势,休眠末期又有所回升。

Cloves of Caijiapo' garlic were stored by 5,20, 35℃ during the dormancy of garlic plants. The results showed. 5 ℃ treatment of cloves broke the dormency earlier and accelerated sprouting, 35℃ treatment of seed cloves prolonged the dormancy and prevented them from sprouing. Five endogenous hormones existed in clovess during the dormancy. Releasing levels of ethylene was always higher in the process of cloves relieving from the dormancy. Endogenous ABA levels rose in the cloves of three temperature treatments during the dormancy, that of 5℃ treatment were generally the lowest; Endogenous GA3 levels in cloves of 5℃ treatment were generally the highest and of 35 ℃ treatment were the lowest; Endogenous GA3 and CTK levels reached the highest in the early phase, declined in the middle phase and rose in the last phase of the dormancy.