摘要
本文以山定子（Ｍａｌｕｓｂａｃｃａｔａ）和苹果矮化自根砧Ｍ９为试材，对长枝的顶芽、顶尖、叶片和木质部中的ＡＢＡ、ＩＡＡ和ＧＡ３含量年变化进行了分析。结果表明，砧木内源激素水平年变化规律与树体生长规律的变化基本一致；矮化砧（Ｍ９）和山定子相比，在被迫休眠期ＣＡ３含量高，萌动期ＩＡＡ增加速度快，但在新梢旺长期间，ＧＡ３；ＩＡＡ含量逐减；长枝各组织、器官，在不同物候期，内源激素分别不同程度地存在差异，且相对稳定。据此，认为一年中指定器官、指定时间内，砧木内源激素的含量差异可作为矮化预测指标。
We observed aunual endohormone(ABA. GA3.IAA)changs in termina bud,tip,leafand rylem of long branches of apple stocks(M9,Stock and Malus baccata,).The resultsshowed as follows:(l)Annual changts of endohormone in long branches were coincidedwith their growing curves,(2)Compared with Malus baccata GA3 was higher in dormantperiod;in Sprouting,IAA increased also faster,while,during branch growing period bothGA3 and IAA decreased gradually.(3)Endohormone changes in long branchs were dif-ferent between M9 stock and Malus baccata. According to the resulst,we can predict which stocks are dwarf.
基金
"苹果矮化机制和预选方法研究"课题
关键词
苹果
砧木
内源激素
矮化
预测
apple stocks
indohormone
dwarfing effect predicition
