大豆亲本品种数量陛状遗传潜势分析

ANALYSIS ON GENETIC POTENTIAL OF THE QUANTITATIVE CHARACTERS IN SOYBEAN VARIETIES

摘要:

本文以大豆亲本品种为试材, 分析主要数量性状的遗传参数表明:各亲本间差异显著, 一株荚数、一株粒数、单株数、单株粒重、百粒重变异程度高。未虫食率、抗病指数遗传力大。一株粒数、一株荚数、抗病指数遗传进度、相对遗传进度及其与单株产量的相关遗传进度值均较高。由一株荚数、一株粒数、百粒重、抗病指数、未虫食率组成的选择指数方程, 综合选择响应值大。

Abstract:

Genetic parameters on main quantitative characters were analyzed in this paper for the soybeanvarieties used as parents. The results showed: (1) the differences among the soybeans were significant for most of the traits and the degree of variation for pod number per plant, seed number perplant, seed weight per plant and 100-seed weight was high, (2) the heritabilitis for percentage of undamaged seed and resistance index to disease were high, and (3) the values of both genetic advanceand relatively genetic advance were. high. The estimates of response to the selection index equationbased on pod number per plant, seed number per plant, 100-seed weight, resistance index to disease, percentage of undamaged seeds were high.