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在两个试验点同时观察到两个生长直立的栽培大豆品种间杂交后代生育习性的分离。该组合的Ｆ１为典型的直立类型，Ｆ２代分离出少数的蔓生倒伏性个体。经统计分析，直立∶蔓生倒伏的分离比例极显著地符合１５∶１。由此推断该蔓生倒伏性可能是由两对分散于亲本之间的隐性基因控制，在两个位点同时为隐性纯合时即表现为蔓生倒伏。
At the same time, the separation of the reproductive habits of the progenies of cross between two cultivated soybean cultivars with upright growth was observed at the two experimental sites. F1 of this combination is a typical upright type, and F2 represents a small number of trailing lodging individuals. According to statistical analysis, upright: the proportion of vines lodging significantly conformed to 15: 1. It is inferred that the lodging resistance may be controlled by two pairs of recessive genes dispersed between parents, and at the same time two loci are recessive homozygous.