灌浆期水分胁迫对北方超级粳稻籽粒中内源激素含量的影响  

Effects of Water Stress on the Endogenous Hormone Contents of North Super-rice During Grain-filling Stage

作　　者：樊金娟[1] 董智[1] 罗霞[1] 崔震海[1] 

机构地区：[1]沈阳农业大学生物科学技术学院,辽宁沈阳110161

出　　处：《河南农业科学》2008年第5期23-26,共4页Journal of Henan Agricultural Sciences

基　　金：辽宁省教育厅A类课题(20060778);沈阳农业大学中青年硕士导师资助项目

摘　　要：采用盆栽人工控制水分的方法,研究了北方超级粳稻沈农265灌浆期水分胁迫对籽粒中4种内源激素(IAA,GA3,ZR和ABA)含量及干重的影响。结果表明,在灌浆的前期和中期,中度水分胁迫处理使IAA,GA3,ZR和ABA含量提高,且明显高于重度水分胁迫处理,较高水平的内源激素综合地调节了水稻的灌浆过程,在节水的同时使籽粒干重较正常灌溉增加1.3%。The effects of water stress on the contents of four endogenous hormones（IAA, GA3, ZR and ABA）and grain weight in north super-rice（Oryza sativa） Shennong 265 during grain-filing stage were studied using pot cultivation with three levels of soil water potential,i, e. well watered （w）, moderate water deficit（m） ,and severe water deficit（s）. The results showed that the contents of four endogenous hormones increased more in m than in s. The higher levels of four endogenous hormones in m could regulated the grain filling process and increase the grain weight by 1.3 %, accompanying with water saving.

关 键 词：超级粳稻 灌浆期 水分胁迫 内源激素 

分 类 号：S511[农业科学—作物学]