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野生大豆作亲本,其杂种后代往往蔓化倒伏.早熟栽培大豆和晚熟野生或丰野生大豆杂交,有限、亚有限结荚习性或矮秆的栽培大豆与野生、半野生大豆杂交,F_2代较易分离出栽培大豆类型.用某一栽培大豆为测配亲本,与多个野生、半野生大豆杂交,测定亲本配合力,发现优良的野生、半野生大豆亲本.杂种后代回交,不管从那一代开始,都应选择直立或半直立栽培大豆类型的后代作亲本,轮回亲本最好是有限结荚习性的栽培大豆品种.百粒重的提高在于选择百粒重大、遗传性强的栽培大豆品种(系)作亲本.
Wild soybean as the parent, the offspring of their hybrids tend to vomit lodging.Premature cultivated soybean and late wild or abundance of wild soybean hybrid, limited, sub limited limited pod habit or dwarf cultivated soybean and wild, semi-wild soybean cross, F_2 generation easier The cultivated soybean type was isolated, and one of the cultivated soybean was used as the test-matching parent and crossed with a plurality of wild and semi-wild soybean to determine the parental combining ability, and the excellent wild and semi-wild soybean parent was found. Initially, offspring of upright or semi-erect cultivated soybean types should be selected as parents and reincarnated parents preferred to be cultivated soybean cultivars with limited pod habit.Improvement of 100-grain weight is due to the selection of cultivated soybean cultivars with a strong, Department) as parents.