灰色关联度分析在玉米组合鉴定试验中的应用

The Application of the Grey Related Degree Analysis to the Maize Combination and Appraises Test

应用灰色关联度分析方法,对玉米组合鉴定试验中主要参试品种的产量、株高、穗位高、茎粗、穗长、穗粗、轴粗、秃尖长、穗行数、行粒数、千粒重、出籽率和单株粒重等性状相关性进行了分析。结果表明:玉米产量与各性状的关联度由大到小依次为:单株粒重>穗粗>出籽率>轴粗>茎粗>千粒重>穗行数>行粒数>穗长>株高>穗位高>秃尖长。因此,在玉米组合鉴定试验中,要注重选择单株粒重高、穗比较粗、出籽率比较高和茎比较粗的品种,而对于株高、穗位高和秃尖长可适当放宽要求。

The grey related degree analysis was employed to investigate the relationship among grain yield, plant height, ear position, stalk diameter, ear length, ear diameter, axis diameter, bald tip length, kernel row of ear, kernel row number, 1 000-kernel weight, rate of bearing kernel, grain weight per plant of variety in the maize combination and appraises test. The result showed that relative importance order of grain yield was grain weight per plant〉 ear dianleter 〉rate of bearing kernel 〉 axis dianleter 〉 stalk diameter 〉 1000-kernel weight 〉 kernel row of ear 〉 kernel row number 〉 ear length 〉 plant height 〉 ear position 〉 bald tip length. When selecting high grain yield hybrid of the maize combination and appraises test, it most be paid attention to select types of grain weight per plant, ear diameter, rate of bearing kernel, axis diameter, and to plant height, ear position, bald tip length to can be relax.