玉米主要农艺性状间相关性和主要农艺性状与产量的相关通径分析  

Correlation between Maize Agronomic Characters and Maize Agronomic Characters and Yield of Correlation and Path Analysis

作　　者：贾亚涛 杜伟建[1] 邢国芳[1] 

机构地区：[1]山西农业大学农学院,山西太谷030801

出　　处：《山西农业科学》2015年第9期1080-1083,共4页Journal of Shanxi Agricultural Sciences

基　　金：国家级大学生创新创业训练计划项目(201310113006);山西省高等学校大学生创新创业训练项目(2013078);山西农业大学第十一批大学生科技创新项目(11-004)

摘　　要：选用国内7个玉米自交系,以采用GriffingⅣ双列杂交设计组配出的21个杂交组合为研究对象,对株高、穗位高、穗长、穗粗、秃尖、穗行数、行粒数、百粒质量、出籽率9个玉米农艺性状和产量表现进行了统计分析。结果表明,各农艺性状之间的相关性很高,在选择时,要协调好各性状之间的关系,着重于穗粗、秃顶长、穗行数、行粒数和出籽率的选择,可适当放宽株高、穗位高、穗长、百粒质量的选择;行粒数、出籽率与产量呈极显著正相关,秃顶长、穗行数与产量呈显著正相关;各性状对产量的直接效应由大到小依次为行粒数、出籽率、穗粗、秃顶长、百粒质量、穗行数、穗位高、穗长、株高。The yield related traits of maize, including plant height, ear height, ear length, ear diameter, the bald length, ear rows, kernels per row, kernel weight and kernel rate were measured at post grain-filling stages in a maize diallel cross involving 21 hybrids and seven parents, and their relationships between each other and yield were also analyzed. The results showed that the correlations among the agronomic traits were high, so we should coordinate the relationship of the various characters, focus on the choice of long spike thick, bald, line number, number of grains per ear and seed yield, and could relax appropriately plant height, ear height, ear length and grain weight when we chose our ideal materials. Further analysis indicated that the production of maize was rarely correlated with that of height length, but highly correlated with other yield components. Moreover, the production of maize was significantly and positively correlated with that of bald length, rows per ear, kernel percentage and ear diameter. The directly effect on the production of various characters was grains per row 〉 kernel percentage 〉 ear diameter 〉 bald length 〉 100-grain weight 〉 rows per ear 〉 ear height 〉 ear length 〉 plant height.

关 键 词：玉米 杂交种 农艺性状 产量 相关分析 通径分析 

分 类 号：S513.032[农业科学—作物学]