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中国农学通报 ›› 2023, Vol. 39 ›› Issue (33): 114-118.doi: 10.11924/j.issn.1000-6850.casb2022-0999

• 生物科学 • 上一篇    下一篇

玉米矮杆突变体DN132610主基因+多基因遗传模型及遗传效应分析

张瑞芳1(), 冯云超1,2(), 尹启诗1, 赵文1, 羊炼1,2   

  1. 1 重庆三峡学院,重庆 万州 404100
    2 重庆三峡农业科学院/重庆市山地生态农业工程技术研究中心,重庆万州 404100
  • 收稿日期:2022-11-23 修回日期:2023-03-15 出版日期:2023-11-25 发布日期:2023-11-22
  • 通讯作者: 冯云超,男,1983年出生,四川丹棱人,副研究员,硕士,主要从事玉米遗传育种研究。通信地址:404155 重庆市万州区厦门路600号,重庆三峡农业科学院,Tel:13996670945,E-mail:yunchaofeng2006@163.com。
  • 作者简介:

    张瑞芳,女,1996年出生,河南新乡人,在读研究生,研究方向为玉米遗传育种研究。通信地址:404155 重庆市万州区百安坝街道天星路666号,重庆三峡学院,Tel:18738594761,E-mail:

  • 基金资助:
    重庆市科企联合体种质资源收集利用与品种试验示范项目“优质玉米资源收集利用与品种试验示范”/重庆市教育委员会科学技术研究项目“适宜弹性鲜收鲜食糯玉米品种选育”(KJQN202101222)

Maize Dwarf Mutant DN132610: Major Gene + Polygene Genetic Model and Genetic Effect Analysis

ZHANG Ruifang1(), FENG Yunchao1,2(), YIN Qishi1, ZHAO Wen1, YANG Lian1,2   

  1. 1 Chongqing Three Gorges University, Wanzhou, Chongqing 404100
    2 Chongqing Three Gorges Academy of Agricultural Sciences/Chongqing Engineering Research Center of the Mountain Ecological Agriculture, Wanzhou, Chongqing 404100
  • Received:2022-11-23 Revised:2023-03-15 Published-:2023-11-25 Online:2023-11-22

摘要:

为了培育矮杆玉米品种,用栽培种材料DN132610和突变体材料DN132610-1杂交获得6个世代群体,探究突变体株高遗传特性。以P1、P2、F1、B1、B2、F2 6个世代群体为试验材料,利用植物数量性状分离分析软件进行联合分析。结果表明,矮化突变体最适遗传模型为E-1,即2对加性-显性-上位性主基因+加性-显性多基因混合遗传模型。2对主基因加性效应值均为-11.205,显性效应值分别是-28.303和-15.840,B1、B2和F2主基因遗传率分别为57.26%、30.06%和76.85%,多基因遗传率分别为0%、28.06%和0%,环境因素引起的变异分别占42.74%,41.88%和23.15%。上述试验表明,控制玉米株高的2对基因以显性效应为主,主基因遗传率较高,B1、F2多基因遗传率为0%,且玉米株高受环境影响较大,存在遗传与环境互作效应,可结合环境鉴定,早期对株高性状进行选择。

关键词: 玉米, 株高, 遗传效应, 主基因+多基因

Abstract:

In order to cultivate dwarf maize varieties, six generations of population were obtained by crossing the cultivated material DN132610 and the mutant material DN132610-1 to explore the genetic characteristics of the mutant plant height. Six generation populations of P1, P2, F1, B1, B2, and F2 were selected as test materials and joint analysis was conducted using plant quantitative trait segregation analysis software. The results revealed that the optimal genetic model for the dwarf mutant was E-1, which was a mixed genetic model with 2 pairs of additive-dominant-epistasis master genes + additive-dominant polygenes. The additive effect values of both 2 pairs of master genes were -11.205 and dominant effect values were -28.303 and -15.840, respectively. The main gene heritability was 57.26% for B1, 30.06% for B2, 76.85% for F2, and 0%, 28.06% and 0% for polygenic heritability, respectively. The variation caused by environmental factors accounted for 42.74 %, 41.88 % and 23.15 %, respectively. The above experiments showed that the two pairs of genes controlling maize plant height were dominated by dominant effects with high heritability of the main gene. The heritability of B1 and F2 polygenes was 0% and maize plant height was influenced by the environment. There was a genetic and environmental interaction effect, which could be combined with environmental identification for early selection on plant height traits.

Key words: corn, plant height, effect of heredity, major gene + polygene