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应用通径分析对１５个甘蓝品种的叶球重和与其构成性状——植株开展度、叶球横径、球叶数等——的分析表明，上述３个构成性状对叶球重的通径系数分别为Ｐ１ｙ＝－０．０４９３、Ｐ２ｙ＝０．５１５９、Ｐ３ｙ＝１．２０１；３性状和叶球重的遗传相关系数分别为ｒ１ｙ＝０．４１６７、ｒ２ｙ＝－０．１８０７、ｒ３ｙ＝０．８９０４。球叶数和叶球横径是决定叶球重的主要因素，２性状须综合考虑；植株开展度对叶球重的有利作用通过间接效应而表现。
The analysis of leaf weight, compositional traits, plant development degree, leaf diameter and number of leaves in 15 cabbage varieties by using the path analysis indicated that the path length The coefficients of correlation were P1y = -0.0493, P2y = 0.5159, P3y = 1.201, respectively. The genetic correlation coefficients of trait and leaf weight were r1y = 0.4167, r2y = -0.1807, r3y = 0 .8904. The number of leaves and the diameter of the leaves are the main factors that determine the weight of the leaves. The traits must be considered comprehensively. The beneficial effects of the degree of plant development on the weight of the leaves are manifested by indirect effects.