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用不同株型5个品种双列杂交10组合F_1资料估算12种株型性状的平均优势率、遗传相关、通径系数、栩对遗传进度、一般与特殊配合力效应等遗传参数。结果表明决定大豆籽粒产量最重要的株型性状是主茎节数和分枝数,其余与产量密切相关的株型性状主要是通过它们而起作用。讨论了大豆理想株型应该结合当地生产条件和生态环境的问题。提出吉林地区大豆高产株型应是在缩短节长抗倒伏基础上增加主茎节数、适当有些分枝,冠层改良以提高有效叶面积指数为主。
The average dominance rate, genetic correlation, path coefficient, Xugei genetic progress, general and special combining ability effects, and other genetic parameters of 12 plant type traits were estimated using 10 pairs of F_1 data from 5 crossbred strains of different plant types. The results showed that the most important plant-type traits that determine the grain yield of soybean were the number of main stems and the number of branches. The rest of the plant-type traits closely related to yield mainly acted through them. Discussed the ideal type of soybean should be combined with the local production conditions and ecological problems. It is suggested that the high-yielding soybean plant type in Jilin should increase the number of main stems on the basis of shortened the length and lodging resistance, with some branches and canopy improved to increase the effective leaf area index.