摘要
【目的】对典范性状对进行决策分析,为多数量性状的选择提供一种简便的方法。【方法】运用通径分析的决策分析方法对典范组合性状对进行决策分析。【结果】建立了典范性状对的通径分析模型;分析得到典范性状对可以用以供选择的各性状xi(i=1,2,…,m)为因,典范目标性状Hig为果的中心线性回归模型表述;定义了各选择性状对典范目标性状的决策系数,各决策系数代表了各选择性状对典范目标性状的综合效用。【结论】通过各性状决策系数的确定,选择组合性状中的主载性状、限制性状和辅助性状,育种者就可根据个体的性状表现来选择,以达到对典范目标性状所期望的遗传进展。
[Objective] It provided an advantageous way for the choice of the multi-quantitative traits by the decision-making analysis of the canonical pair of choice-aim traits. [Method] The decision-making analysis of the combined traits was fulfilled by using decision making analysis of path analysis. [Result] A path analysis model for the canonical pair of choice-aim traits was built. The canonical pair of choice-aim traits could be expressed by the model of the centric Linear Multi-Regression with each choice trait as the cause and the aim of combination trait Hig as the result. Coefficient of each choice trait to the canonical aim trait which represented comprehensive effect on to the combined traits was defined. [Conclusion] These decision coefficients showed a way to judge the main weight-bearing can choose the traits from individual expression to achieve the expectation of genetic process for the aim combination trait.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2009年第9期182-186,192,共6页
Journal of Northwest A&F University(Natural Science Edition)
关键词
组合性状
典范选择-目标性状对
多元线性回归模型
通径分析
决策分析
combination trait
the canonical pair of choice-aim trait
the model of the centric Linear Multi-Regression
path analysis
decision-making analysis
