摘要
以鲁棉研28为试验材料,设置了干旱(土壤相对含水量RWC<60%)和对照(RWC同常规棉田)2种处理,采用酶联免疫吸附法测定棉花主茎叶内源激素的含量。结果表明,2种处理下ZR含量变化呈单峰曲线,干旱出现的峰值极显著高于对照,但晚于对照;干旱处理下GA3含量出现2次峰值,说明较早进入生殖生长期;IAA含量的变化趋势差异不明显,干旱使中期叶片IAA含量显著提高;干旱处理下ABA含量前期出现一较高峰值,中后期缓慢上升,促进早衰。另外,干旱也改变了棉花主茎叶片ZR/ABA、GA3/ABA、IAA/ABA和(ZR+GA3)/ABA的动态平衡。干旱使ZR在功能期发挥作用的时间延长;GA3/ABA在激素平衡互作中关系密切;干旱处理下IAA/ABA前期较低,中后期升高,说明水分缺乏并不影响IAA和ABA在棉花生育后期发挥重要生理作用。
As Lumianyan 28 to be the material,the dynamic changes of endogenous hormone contents in main stem leaves of cot-ton were studied by enzyme-linked immunosorbent assay,two different water treatments drought（the earth RWC60%） and CK（the earth RWC as normal） being set.The results indicated that ZR contents in main stem leaves both showed single peak curves under two treatments,and were very significantly higher but later under drought condition than that of CK.The GA3 content of drought leaves showed second-order peak value,which indicated plants entered the reproductive stage earlier.IAA content in-creased at metaphase in drought stress,but there was no obvious difference in variation tendency between two treatments.It took on a higher peak value of ABA in early drought leaves,and later,ABA ascended slowly to promote premature.Also,drought in-fluenced the dynamic balance of ZR/ABA、GA3/ABA、IAA/ABA and（ZR＋GA3）/ABA.It took longer actions of ZR under drought condition;GA3/ABA was closely related in the hormone mutual actions;IAA/ABA played an important physiology role at later growth even in water deficiency.
出处
《棉花学报》
CSCD
北大核心
2010年第3期231-235,共5页
Cotton Science
基金
国家高技术研究发展计划(863)(2008AA102113)
关键词
棉花
干旱
主茎叶
内源激素
cotton
drought
main stem leaves
endogenous hormone
