干旱对冬小麦粒重形成的影响及灌浆特性分析  

Analysis on the effect of drought on the grain weight grow and the character of the grain filling of winter wheat

作　　者：吴少辉 高海涛 王书子 段国辉 

机构地区：[1]洛阳农业科学研究所,河南洛阳471022

出　　处：《干旱地区农业研究》2002年第2期49-51,64,共4页Agricultural Research in the Arid Areas

基　　金：河南省重点攻关课题 (9910 10 3 )

摘　　要：在干旱胁迫条件下 ,以豫西地区种植的 6个主要小麦品种为试验材料 ,用 L ogistic方程对籽粒灌浆过程拟合 ,并推导出一系列次级参数 ,用相关与逐步回归等分析方法对不同灌浆参数与粒重关系进行分析。结果表明 ,干旱条件下 ,冬小麦的平均灌浆时间 T相对缩短 ,平均灌浆速率 R相应增加 ;籽粒灌浆速率对小麦粒重形成作用显著 ,而灌浆持续时间与粒重形成无显著相关关系 ;Under the water stress,the grain filling processes of six dominant winter wheat varieties planted in the west of Henan province were modeled with Logistic equation and a series of inferior parameters were conducted. The relationship between grain filling parameters and grain weights was analysed using correlation and stepwise regression. The results showed that the mean grain filling time of winter wheat was shortened while the mean grain filling rate was increased correspondingly. Grain filling rate affected grain weight significantly, but grain filling duration didn't relate to the grain weight significantly. It was very important to increase grain filling rate for us to increase grain weight.

关 键 词：冬小麦 干旱胁迫 粒重形成 灌浆特性 籽粒灌浆模型 方程参数 阶段参数 

分 类 号：S512.11[农业科学—作物学]