根系分区灌水对苹果叶片内源激素及生长的影响  

Effects of Partial Rootzones Irrigation on Endogenous Hormones and Growth of Apple Branches and Leaves

作　　者：邹养军[1] 魏钦平[2] 李嘉瑞[1] 王小伟[2] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100 [2]北京市农林科学院林业果树研究所,北京100093

出　　处：《园艺学报》2006年第5期1039-1041,共3页Acta Horticulturae Sinica

基　　金：北京市科委重大项目(H030730050130);北京市自然科学基金项目(60622007)

摘　　要：以2年生分根盆栽‘皇家嘎拉’(RoyalGala)苹果为试材,通过全部根系、3/4、2/4、1/4根系灌水和全部根系干旱5种处理研究了根系分区灌水对叶片内源激素变化及枝叶生长的影响。结果表明1/4、2/4根系灌水叶片ABA含量提高,IAA、GA3、ZR含量降低,枝叶生长显著被抑制,并认为局部灌水处理对枝叶生长的抑制是由于根系ABA合成量增加、CTK合成量降低,地上部茎尖和幼叶IAA、GA3合成量降低共同作用的结果。Two-year-old split-root potted apple trees （Royal Gala） were used for studying the effects of partial rootzone alternative irrigation on the content of endogenous hormones in leaves and growth of shoots and leaves. There are five experiment groups of irrigation： complete irrigated part, 3/4, 2/4, 1/4 and no irrigation part. The results showed that the content of ABA in leaves increased but contents of IAA, GA3 and ZR in leaves were decreased, the growth of shoots and leaves were markedly inhibited under the treatments of 1/4 and 2/4 irrigation groups. We supposed the reasons for the growth of shoots and leaves inhibited markedly were the common effects of ABA increasing, CTK decreasing in roots synthesizing and IAA and GA3 slowing down in shoots and young leaves synthesizing.

关 键 词：苹果 根系分区灌水 内源激素 生长 

分 类 号：S661.1[农业科学—果树学] S607[农业科学—园艺学]