两类生态型区苹果器官内源激素含量及生长发育的变化

Contents and Variation of Endogenous Hormones in Organs of Apples on Two Ecotype Conditions

采用酶联免疫法（ＥＬＩＳＡ）测定了南亚热带干热多日照河谷（Ｅ１）和北亚热带湿热少日照河谷（Ｅ２）两类生态型区的金冠苹果７种器官内源激素ＩＡＡ、ＧＡ、ＺＲ、ＡＢＡ含量和不同生长时期叶片各激素的含量变化。结果表明，Ｅ２型区苹果茎尖和叶片ＩＡＡ、ＧＡ、ＺＲ含量，幼叶和芽的ＧＡ含量以及伸长中的茎、幼叶、叶、根的ＺＲ含量均显著高于Ｅ１型区，而各器官ＡＢＡ含量则显著低于Ｅ１。两类生态型区苹果的生长结果状况也呈现相应的变化。

The contents of endogenous IAA,GA,ZR,ABA in seven organs and the content variation of four hormones in leaves of Golden Delicious apples on two ecotype conditions,southern subtropic dry warm and more sunshine river valley(ecotype Ⅰ)and northern subtropic wet hot and less sunshine river valley(ecotype Ⅱ),were determined by ELISA.The results showed that the IAA,GA,ZR contents in shoot tips and leaves on the ecotype Ⅱ were significantly higher respectively than those on the ecotype Ⅰ.Furthermore the GA contents of young leaves,buds and the ZR contents of stretching stems,young leaves,leaves and roots on the ecotype Ⅱ were significantly higher than those on the ecotype Ⅰ respectively.But the ABA contents in every organ of the ecotype Ⅱ were significantly lower than those on the ecotype Ⅰ.The ABA contents of leaves in the stage of shoot growing on the ecotype Ⅱ were lower than those on the ecotype Ⅰ.So the growth and fruiting in two ecotype areas was correspondingly different.