We found the essence of path analysis of selection index is analysis of correlative heritability between traits and aggregate genotype.

通过分析得出选择指数的通径分析的实质是选择性状与复合育种值的相关遗传力分解。

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The analysis all of the experiment data indicate that the harvest index can be as a standard of selection of the early separate generations of the wheat breeding.

整个试验数据的分析表明：收获指数可以作为小麦育种早期分离世代对产量性状进行选择的一个标准。

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Based on the current index system of credit rating, we use Principal Component Analysis to filtrate the index quantitatively, overcoming the subjectivity of index selection.

本文在现有的信用评级法指标体系基础上，运用主成分分析法定量筛选评价指标，克服指标选取的主观性。

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