河南农业科学2012，Vol.41Issue(7)：12-16,5.
玉米杂交种不同产量水平穗部性状的相关和通径分析
Correlation and Path Analysis on Ear Traits of Maize Hybrid under Different Yield Levels
摘要
Abstract
The correlation and path analysis were used to study the yield and ear properties of 90 maize hybrids under different yield levels (high,middle and low) from 3 years of Henan Regional Trial with the high density of 60 000 plants per hectare,in order to provide a reference for breeding the high yield and density-tolerant maize varieties. The results indicated that the kernels per row, 1 000-kernel weight,rows per ear,ear diameter and ear length contributed more to grain yield under 6 000—7 500 kg/ha yield level; the shelling percentage,ear length,! 000-kernel weight,ear diameter and kernels per row had greater effect on yield under 7 500—9 000 kg/ha production level; while the ear length, 1 000-kernel weight, shelling percentage and axis diameter were more important to yield above 9 000 kg/ha production level. This suggested that for the breeding of maize hybrids with yield level of more than 9 000 kg/ha,more attention should be paid to the ear length, 1 000-kernel weight,shelling percentage and axis diameter.关键词
玉米杂交种/产量/穗部性状/通径分析Key words
maize hybrid/yield/ear trait/path analysis分类
农业科技引用本文复制引用
王铁固,赵新亮,张怀胜,陈士林..玉米杂交种不同产量水平穗部性状的相关和通径分析[J].河南农业科学,2012,41(7):12-16,5.基金项目
河南省科技攻关项目(102102110165) （102102110165）
河南科技学院高层次人才启动项目(2009012) （2009012）
