黄淮海玉米区试品种农艺性状与产量的相关性及通径分析  

Correlation and Path Analysis between Agronomic Characters and Yield of Maize Varieties in Huang-Huai-Hai Regional Trials

作　　者：刘世敏 王同芹[1] 刘兆丽[1] 张世和[1] 白星焕[1] LIU Shi-min;WANG Tong-qin;LIU Zhao-li(Weifang Academy of Agricultural Sciences,Weifang,Shandong 261071)

机构地区：[1]山东省潍坊市农业科学院,山东潍坊261071

出　　处：《安徽农业科学》2020年第21期30-32,共3页Journal of Anhui Agricultural Sciences

基　　金：国家玉米产业技术体系潍坊试验站(CARS-02-65)。

摘　　要：选用2014—2019年参加黄淮海夏玉米区域试验75000株/hm^2密度的426个品种为研究对象,对株高、穗位高、穗长、穗行数、秃顶长、百粒重6个玉米农艺性状和产量表现进行了统计分析。相关分析结果表明,产量与穗位高、穗长、株高、穗行数呈极显著正相关关系,与秃顶长呈极显著负相关关系。通径分析表明,穗长、穗位高和穗行数的直接通径系数较大,是影响产量的关键性状,在选育玉米品种时,要注意对穗长、穗位高和穗行数的选择。In order to analyze the relationship between agronomic characters and yield,we selected 426 maize varieties in Huang-Huai-Hai regional trial from 2014 to 2019 as the research material.The agronomic characters,including plant height,ear height,ear length,ear rows,the bald length and 100-kernel weight were measured at post grain-filling stages.The correlation analysis showed that the yield showed extremely significant positive correlation with plant height,ear height,ear length and ear rows,had extremely significant negative correlation with bald length.Path analysis showed that ear length,ear height and ear rows had greater direct path coefficient with yield.Ear length,ear height and ear rows were the key characters affected the yield of maize,so that particular attention should be paid to the characters in the maize breeding.

关 键 词：玉米品种 产量 农艺性状 相关分析 通径分析 

分 类 号：S513[农业科学—作物学]