高丹草F2代农艺性状的数量遗传分析

doi:10.19640/j.cnki.jtau.2021.03.002

天津农学院学报 ›› 2021, Vol. 28 ›› Issue (3): 6-11.doi: 10.19640/j.cnki.jtau.2021.03.002

高丹草F₂代农艺性状的数量遗传分析

董林洁, 包曙光, 康晨, 谢晓东, 罗峰^通信作者, 孙守钧^通信作者

天津农学院农学与资源环境学院,天津 300392

收稿日期:2020-11-11 出版日期:2021-09-30 发布日期:2021-10-07
通讯作者: 孙守钧（1961–）,男,教授,博士,主要从事饲用作物遗传改良研究。E-mail：sunshoujun@tjau.edu.cn。罗峰（1980–）,男,副教授,硕士,主要从事饲用作物遗传改良研究。E-mail：luofeng1868@126.com。
作者简介:董林洁（1995–）,女,硕士在读,主要从事饲用作物遗传改良研究。E-mail：donglj25@qq.com。
基金资助:
农业农村部“引进国际先进农业科学技术”项目（2016-X09）

Genetic analysis of agronomic characters in F₂ population of Sorghum bicolor×Sorghum sudanense

Dong Linjie, Bao Shuguang, Kang Chen, Xie Xiaodong, Luo Feng^{Corresponding Author}, Sun Shoujun^{Corresponding Author}

College of Agronomy and Resource Environment, Tianjin Agricultural University, Tianjin 300392, China

Received:2020-11-11 Online:2021-09-30 Published:2021-10-07

摘要/Abstract

摘要： 以粒用高粱‘忻粱52’和苏丹草‘美引-48’杂交构建的F₂代群体为试验材料,对F₂代的叶片数、茎节数、株高、茎粗和蜡粉等5个农艺性状进行测定,并利用主基因+多基因混合遗传模型分析得到各性状的最适遗传模型及遗传率。结果表明：叶片数、茎粗的最适模型为Model A_0,表明该性状不受主基因控制,为微效多基因控制的性状;茎节数和株高的最适模型为Model A_4,为负向完全显性混合遗传模型,受一对主基因遗传,主基因遗传率分别为91.13%和66.14%;蜡粉的最适模型为Model B_1,由两对主基因控制的加性-显性-上位性混合遗传模型,控制该性状的主基因遗传率为54.03%。

关键词: 高丹草, 农艺性状, 主基因+多基因分析, 数量遗传

Abstract: In this study, the F₂ generation population constructed by the cross between the grain Sorghum bicolor ‘Xinliang 52’ and Sorghum sudanense ‘Meiyin-48’ was used as the test material. Five agronomic characteristics of the F₂generation including leaf numbers, stem numbers, plant height, stem diameter and wax powder were measured, and the optimal genetic model and heritability of each trait were obtained by principal-multiple gene analysis. The results showed that the most suitable model for the number of leaves and stem diameter was Model A_0. There was no major gene inheritance, but the quantitative trait inheritance controlled by micro-effect and multi-gene. The optimal model of stem numbers and plant height was Model A_4, a negative full-dominant model controlled by a pair of major genes, and the major gene heritability were 91.13% and 66.14%. The optimal model of wax powder was Model B_1, which belonged to the additive-dominant-epistatic mixed genetic model, controlled by two pairs of major genes with the heritability of the major gene of 54.03%.

Key words: Sorghum bicolor×Sorghum sudanenes, agronomic characters, major-multi-gene genetic analysis, quantitative inheritance

中图分类号:

S514

董林洁, 包曙光, 康晨, 谢晓东, 罗峰, 孙守钧. 高丹草F₂代农艺性状的数量遗传分析[J]. 天津农学院学报, 2021, 28(3): 6-11.

Dong Linjie, Bao Shuguang, Kang Chen, Xie Xiaodong, Luo Feng, Sun Shoujun. Genetic analysis of agronomic characters in F₂ population of Sorghum bicolor×Sorghum sudanense[J]. Journal of Tianjin Agricultural University, 2021, 28(3): 6-11.

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链接本文: http://xuebao.tjau.edu.cn/CN/10.19640/j.cnki.jtau.2021.03.002

http://xuebao.tjau.edu.cn/CN/Y2021/V28/I3/6

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高丹草F₂代农艺性状的数量遗传分析

Genetic analysis of agronomic characters in F₂ population of Sorghum bicolor×Sorghum sudanense

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