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菜豆花色性状遗传是受两对互补基因控制。白花品种 ×白花品种（或紫花）， Ｆ１代均表现为紫色花，Ｆ２代均可分离出紫花和白花两种表现型．白花品种（一亲本为有色粒）间杂交，Ｆ２代紫花和白色分离比例９：７．白花与紫花品种杂交，Ｆ２代紫花和白花分离比例为３：１。蔓性性状遗传是受一对基因控制。矮生品种与蔓生品种杂交，Ｆ１代表现蔓生，Ｆ２代分离出蔓生和矮生两种类型，分离比例为３：１。在蔓生类型中植株高度差异颇大，这是因为株高受蔓生性基因、节数多少和节间长短的多基因控制，株高属于数量遗传。种粒花纹性状是受一对基因控制。有花纹品种与无花纹品种杂交，Ｆ１代表现有花纹，Ｆ２代分离出有花纹和无花纹两种类型，分离比例为３：１。种粒皮包性状遗传比较复杂．这一性状至少受两对主效基因控制，似乎还有微效基因的作用：以白粒、灰粒（乳白粒）、黄粒（棕色粒）、兰粒（黑粒）的顺序，基因型趋向复杂化．
The genetic trait of bean tastes is controlled by two pairs of complementary genes. White varieties × white varieties (or purple flowers), F1 generation showed purple flowers, F2 generation can be isolated from purple and white flowers two phenotypes. White flower varieties (a parent colored particles) between the cross, F2 generation purple and white separation ratio of 9: 7. White flowers and purple varieties cross, F2 generation purple and white flower separation ratio of 3: 1. Traits of trait traits are controlled by a pair of genes. The hybrids between the dwarf varieties and the creeping varieties are present in the F1 generation, and the two types are isolated in the F2 generation. The segregation ratio is 3: 1. Plant height varies widely among the types of creeping because the plant height is controlled by a multiplicity of genes such as the number of nodes, the number of segments and the length of internodes. Grain pattern is controlled by a pair of genes. There are varieties of hybrids and non-cross-species varieties, F1 on behalf of the existing pattern, F2 generation were separated patterns and no pattern of two types, the separation ratio of 3: 1. Seed bag genetic heritage is more complicated. This trait is controlled by at least two pairs of major genes and seems to have the effect of a minor gene: in the order of white, gray (milky white), yellow (brown), blue (black), genotype Trend is more complicated.