高赖氨酸玉米收获时籽粒含水量与籽粒性状的灰色关联分析

利用灰色关联度分析的方法对１５个高赖氨酸玉米双列杂交组合进行收获时籽粒含水量与穗部及籽粒性状的关联分析。结果表明，粒长、轴粗、穗粗、穗长与收获时籽粒含水量的关联度较大；粒重、容重次之；粒厚、粒宽最小。因此，选育收获时籽粒含水量低的高赖氨酸玉米，应选择粒较短、轴较细的类型，同时应注意选择长穗、高容重来弥补穗粗和籽粒体积下降所造成的产量下降

THE GREY RELATED DEGREE ANALYSIS BETWEEN GRAIN MOISTURE CONTAINEDIN MATURE TIME AND SOME CHARACTERS OF EAR AND GRAIN OF QPM

The grey related degree analysis were employed to invstigate the relationship between grain moisture contained in mature time and some characters of ear and grain in which 15 single crosses of QPM (Quality Protain Maize)inbreeding lines were involved.The results indicate that the grey related degree of grain length, axis thickness of ear ,ear diameter and ear length was in the first place; the grain weight and grain unit weight took the second place; the grain thickness and grain width was least. therefore ,we ought to emphasize the grain length and ear axis thickness in order to breed the QPM with lower moisure contained in mature time. Meanwhile, we should select the maize which have long ear and big unit weight to avoid reducing the yield.