矮秆陆地棉陆矮1号主茎顶芽几种激素含量研究  

Endogenous Hormone Contents in Apical Buds of Short-stalked Cotton Lu-ai No.1

作　　者：刘爱玉[1] 陈金湘[1] 李瑞莲[1] 易九红[1] 冯正锐[1] 

机构地区：[1]湖南农业大学农学院,长沙410128

出　　处：《棉花学报》2009年第3期248-251,共4页Cotton Science

基　　金：湖南省自然科学基金(06JJ20051;08JJ3079)

摘　　要：在棉花株高建成的初蕾到盛花期,研究了陆地棉矮秆品系陆矮1号与高秆对照TM-1及其杂种F1顶芽内源激素含量变化。结果表明:各时期陆矮1号顶芽中GA3和IAA含量均低于TM-1和F1,盛蕾期顶芽GA3含量分别仅为TM-1和F1的28.37%和31.04%,初花期IAA含量分别是TM-1和F1的61.20%和52.76%;陆矮1号和F1顶芽Z含量最高值出现在初蕾期,随后下降,较TM-1早15 d;陆矮1号顶芽ABA含量除初蕾期与其它品种无显著差异外,其余时期均最高,在盛蕾期、初花期和盛花期分别比TM-1高26.7%、32.4%、132.5%,比F1高129.1%、87.5%、37.4%。The endogenous hormones contents of a dwarf cotton（Gossypium hirsutum L.） line Lu-ai-1,standard line,TM-1,and their hybrid F1 at different growth stages were presented in the paper.The result showed that the GA3 and IAA contents in apical buds of Lu-ai-1 at different growth stages were lower than that of TM-1 and F1,and the GA3 content in apical buds of Lu-ai 1 at peak squaring stage was only about 28.37% and 31.04% of TM-1 and F1,and IAA at first flowering stage was 61.20% and 52.76% of TM-1 and F1,respectively.The maximal Z content in apical buds of Lu-ai-1 and F1 was reached at the beginning of squaring,and then decreased gradually,which was 15 days earlier than that of TM-1.The ABA content in apical buds of Lu-ai-1 decreased rapidly after peak squaring stage,but still kept the highest level compared with that of TM-1 and F1,and the ABA content was 26.7%,32.4%,132.5% higher than that of TM-1,and 129.1%,87.5%,37.4% higher than that of F1 at peak squaring stage,first flowering stage and peak flowering stage,respectively.

关 键 词：棉花 矮秆 顶芽 激素 

分 类 号：S562[农业科学—作物学]