大麦多数量性状相关分析

The Multi-Quqntity Characteristic Cqrrelation Analysis of Barley

穗长、穗粒重两性对小区产量直接影响较大;每穗实粒数和每穗不实粒两性状数对小区产量直接影响很小,但通过其他性状对小区产量的间接负影响很大;每穗总粒数对小区产量直接负影响很大,株高通过其他性状对小区产量间接正影响很大。

Through the heretability correlation coefficient path analysis, We have obtained the rdsults as follows: length and grain weight per ear, these two characteristics, have a consierable direct effect on the plot yield; effective grain number per ear and nonbearing grain number per ear, these two characteristics, have little direct effect but through other characteristics exercise considerable indirect negative effect. Effective grain number has direct negative effect on the plot yield. Plant height through other characteristics has indirect positive effect on the plot yield.