香椿芽休眠萌发期间内源激素和碳水化合物的变化

编号 zgly0000300923

文献类型 期刊论文

文献题名 香椿芽休眠萌发期间内源激素和碳水化合物的变化

作者 涂炳坤  丁小飞 

作者单位 华中农业大学园艺林学学院 

母体文献 林业科学 

年卷期 2003,39(4)

页码 159-161

年份 2003 

分类号 S644.4 

关键词 香椿芽  休眠萌发期  内源激素  碳水化合物 

文摘内容 Contents of carbohydrates and endogenous hormones from dormancy to sprouting^* of Toona sinensis buds were measured. Dynamic changes of GA1/3 , iPA and ABA were detected. GA1/3 and iPA decreased when the dormancy began,and then increased to the highest value before bud sprouting. The lowest value of GA1/3 , 358.7 ng· g^-1FW, was observed 21 days after leaf falling, whereas ABA was the highest, 201.5 ng·g^-1FW. Thereafter, ABA decreased and GA1/3 in-creased with the advent of bud sprouting. Ratios of GA/iPA and iPA/ABA decreased first and then increased from dormancy to sprouting with minor change range compared with GA1/3 , iPA and ABA. This demonstrated that dormancy break was closely related to hormone change, concurrent with starch degradation and increase in soluble sugars。