玉米杂交组合产量与农艺性状的灰色关联度分析

Grey Relational Analysis for Yield and Agronomic Characters of Hybridized Maize Combination

以灰色系统理论为依据,采用灰色关联度分析法,对15个玉米杂交组合的子粒产量与14个农艺性状的相关性状进行分析。结果表明,玉米杂交组合的产量是由多种因素控制的,农艺性状中影响产量的因素顺序为:生育期>出籽率>行粒数>穗长>穗粗>千粒重>株高>穗行数>轴粗>穗位高>秃尖长>双穗率>倒伏率>空秆率。生育期、出籽率、行粒数、穗长、穗粗、千粒重等因素与产量的关系密切,对产量的构成影响较大。

The grey relational analysis was employed to investigate the relationship between the kernel yield of 15 hybridized maize combinations and its related characters from 14 main agronomic characters. The results showed that the yield of hybridized maize combination was affected by multiple factors, and the order of main agronomic characters which affect yield of corn was growth period〉kernel ratio〉kernel number per row〉ear length〉ear diameter〉1000-kernel weight〉 plant height〉ear row number〉axis diameter〉ear position〉bald tip length〉double ear ratio 〉lodging ratio〉empty stalk ratio; growth period, kernel ratio, kernel number per row, ear length, ear diameter and 1000-kernel weight were closely related to the yield of maize and had huge influence on yield components.