春小麦主要数量性状的遗传相关和通径分析  

GENETIC CORRELATIONS AND PATH COEFFICIENT ANALYSIS OF THE MAIN QUANTITATIVE TRAITS IN SPRING WHEAT

作　　者：赵凤清[1] 赵宏业[1] 

机构地区：[1]吉林省农业科学院

出　　处：《吉林农业大学学报》1989年第3期29-32,81,共5页Journal of Jilin Agricultural University

摘　　要：本研究采用37个春小麦品种(品系)为材料,通过协方差分析,测定了7个数量性状间的表型相关和遗传相关,遗传进度和相关遗传进度以及主要影响因子的选择效果。继而通过逐步回归进一步进行通径分析,明确了各性状的直接效应。结果表明,穗粒重与产量的遗传相关和相关遗传进度为最大。Thirty-seven wheat varieties were used to determine the genotypic and phenotypic correlations, genetic advances and correlated genetic responses for seven quantitative traits by covariance analysis. Pathcoefficient analysis was conducted to estimate the direct effect of each trait with successive regression. Result showed that ( 1 ) The genotypic correlation coefficient of grain weight per spike and grain yield, and the genetic advance were the highest among the traits. ( 2 ) The 37 varieties had the largest variability in grain weight per spike.

关 键 词：春小麦 遗传相关 通径分析 

分 类 号：S512.101[农业科学—作物学]