高粱主要农艺性状与产量的灰色关联度分析

Grey Relational Analysis for Main Agronomic Traits and Yield of 14 Sorghum Varieties

为探明高粱主要农艺性状与产量的关联程度,为赤峰地区高粱新品种选育提供理论依据。采用赤峰地区近几年选育的14个高粱杂交种的试验结果数据,运用灰色关联分析法,分析株高、穗长、茎粗、单穗粒重、千粒重和生育期与产量的关联性。结果表明,6个因素与产量的关联系数依次为穗长>生育期>株高>单穗粒重>茎粗>千粒重;高粱新品种选育应重点选择长穗型及生育期长的品种,兼顾其他性状的选择。

The relationships between yield and height,ear length,stem diameter,grain weight per ear,1000-grain weight,growth period were analyzed by grey relational analysis based on the data from breeding of 14 sorghum hybrids in Chifeng region to discuss the correlation degree between main agronomic traits and yield in sorghum and provide the theoretical basis for breeding of new sorghum varieties in Chifeng region.Results：The correlation coefficient between yield and six agronomic traits is ear length〉growth period〉 height 〉 grain weight per ear 〉stem diameter 〉 1000-grain weight.The agronomic traits of long ear and longer growth period should be first selected in breeding of new sorghum varieties and then other agronomic traits related to sorghum yield such as height,grain weight per ear,stem diameter and 1000-grain weight are considered.