高密植条件下玉米杂交种主要农艺性状与产量的灰色关联度分析

运用灰色关联度分析方法，对高密植条件下14个玉米杂交种的产量与9个农艺性状之间的关系，以及农艺性状之间的关系进行了关联度分析。结果表明，产量与农艺性状的关联度大小依次为穗粒重、百粒重、生育期、穗长、行粒数、穗粗、穗行数、轴粗、秃尖长。在育种工作中，应首先选择单穗粒重、百粒重高的杂交种，在产量相当的情况下生育期短、穗长长、行粒数多的杂交种。

Grey Correlation Analysis of Main Agronomic Characters and Yield of Corn Hybrids under High Density

Based on the grey relational analysis method, the correlation between yield of 14 corn hybrids and 9 agronomic traits under high dense planting conditions, and the relationship between agronomic traits were analyzed. The results show that the order of correlation between yield and agronomic traits was kernel weight per spike, 100-grain weight, growth period, ear length, kernels per row, ear diameter, row numbers, cob diameter and bald tip length. In the breeding work, the selection of traits of high grain weight of the single spike and the 100-grain weight should be first priority. Short growth period, long ear, and more kernels per row also should be emphasized in the case of the equivalent yield.