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

作　　者：闫海霞 柳家友 吴伟华 

机构地区：[1]漯河市农业科学院,河南漯河462000

出　　处：《山东农业科学》2008年第1期7-9,50,共4页Shandong Agricultural Sciences

基　　金：河南省科技攻关计划重点项目(0623010600)

摘　　要：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.

关 键 词：夏玉米 果穗性状 单株产量 相关系数 通径系数 

分 类 号：S513.032[农业科学—作物学]