夏玉米主要穗部性状与单株产量之间的相关和通径分析

Correlation and Path Analysis of Main Ear Characters and Individual Yield of Summer Maize

对33个夏玉米杂交组合的7个穗部性状与单株产量间进行相关和通径分析。相关分析结果表明,出籽率、百粒重与单株产量的相关达到显著水平。进一步进行通径分析表明,各性状对单株产量的相对重要性依次为:穗长>出籽率>百粒重>穗粗>穗行数>行粒数>秃尖长。因此,增加穗长、提高出籽率和百粒重,并兼顾其它性状是夏玉米获得高产的有效途径。

Correlation and path analysis of individual yield and seven ear characters were made in 33 summer maize hybridized combinations. The results of correlation analysis indicated that shelling percentage and 100 -kemel weight were significantly related with individual yield. The results of path analysis indicated that the relative importance of ear characters in turn is ear length, shelling percentage, 100 - kernel weight, ear diameter, row number, kernel number of per row and bald length. Therefore, increasing ear length and enhancing shelling percentage and 100 - kemel weight are effective approach to get high - yield of summer maize hybrids. At the same time, the other traits should be considered.