摘要
本文对３个栽培大豆与半野生大豆杂交组合进行了分析，结果表明：大豆品种间杂种优势是普遍存在的，而且主要表现在产量性状上，百粒重的杂种优势及超亲优势为负值。超亲优势的表现与杂种优势的表现基本相同。杂种后代植株高、分枝多、籽粒小是半野生大豆在育种工作中利用的障碍。为克服杂种后代的小粒性，必须用大粒亲本进行回交并进行定向选择。利用双亲的平均值可以预测Ｆ１代的株高、主茎节数、有效分枝数、单株荚数、单株粒重、百粒重。Ｆ１代单株粒重的增加主要依赖于单株荚数、单株粒数、百粒重的增加，与栽培大豆亲本（Ｐｃ）、半野生大豆亲本（Ｐｓｗ）和双亲平均值（Ｍｐ）相关不显著。
The results showed that all characters of F1 had obvious heterosis and its main performance was on the output characters. The reterosis and reterobeltiosis of 100seed weight were negative. The performance of reterobeltiosis was sance with heterosis. The main hinder using the semiwild soybean in breeding works was bigger plant height, more actual branch and little seed of hybrids progenies. In order to overcoming the little seed of hybrids progenies. The descerdents of interspercific cross with big seed cultivated soybean and fixed selection. Using the Mp could forecast the F1′s plant height, number of nodes on main stem, Actual branch, number of pods per plant, 100seed weight and seed weight per plant. The addition of F1 seed weight per plant mainly rely on the addition of number of nods per plant, number of seed per plant and 100weight. The relation between F1 seed weight per plant with Pc, Psw and Mp were not outstanding.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
1997年第4期14-19,共6页
Journal of Jilin Agricultural University
基金
吉林省农业厅资助
