芥菜型油菜每角籽粒数QTL 的上位性互作和环境互作分析
作者:
作者单位:

青海省农林科学院春油菜所

作者简介:

通讯作者:

中图分类号:

基金项目:

2023年西部之光项目、国家自然科学项目(31860390)、国家油菜产业技术体系项目(CARS-12)


Epistatic Effects and QTL × Environment Interaction Effects of QTLs in Brassica juncea L.
Author:
Affiliation:

Fund Project:

2023 Western Light Project, National Natural Science Foundation of China ( 31860390 ), National Rapeseed Industry Technology System Project ( CARS-12 )

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    【目的】为揭示芥菜型油菜及芸薹属作物每角籽粒数形成的分子机理,进而为提高和改良芥菜型油菜产量和育种工作奠定基础。【方法】研究以包含221个芥菜型油菜株系的重组自交系(recombinant inbred line,RIL)群体为材料,在5个环境条件下对每角籽粒数性状进行加性QTL、加性×加性上位互作及环境互作分析。【结果】结果表明:(1)共检测到7个与每角籽粒数相关的加性QTL,主要分布在芥菜型油菜A02、A03、A05、A08、B02和B03等染色体上,其加性效应分布在(-11.642 4)~4.524 6之间,其中qSS2-71的加性效应和遗传率均最大,分别达到-11.642 4和14.44%,其余6个加性QTL的加性效应和遗传率均较小。(2)检测到7对影响每角籽粒数的加性×加性QTL上位互作效应及其与环境的互作效应,上位性QTL互作效应值分布在(-4.930 8)~4.193 6之间,7对上位性QTL与不同环境互作的遗传力均接近0。(3)每角籽粒数性状的广义遗传率为80.98%,狭义遗传率为30.98%。【结论】综合分析,芥菜型油菜每角籽粒数受一定环境影响,但控制该性状的加性效应受环境影响较小,且其加性×加性上位性QTL互作效应不明显。

    Abstract:

    【Objective】 In order to reveal the molecular mechanism of the formation of seed number per pod in Brassica juncea L. and Brassica crops, and lay a foundation for improving the yield and breeding of B. juncea. 【Methods】 In this investigation, 221 recombinant inbred lines (RILs) were engineered using the B.juncea L. The study aimed to analyze the additive quantitative trait loci (QTL), additive × additive epistatic effects, and genotype × environment interaction effects on the number of seeds per siliqua in mustard-type rapeseed across five distinct environmental settings. 【Results】 The analysis identified a total of seven additive QTL associated with the number of seeds per siliqua, predominantly localized on chromosomes A02, A03, A05, A08, B02, and B03 of mustard-type rapeseed. The magnitude of additive effects ranged from -11.642 4 to 4.524 6, with the most significant additive effect observed in qSS2-71 (-11.642 4), which also demonstrated the highest heritability at 14.44%. The remaining six additive QTL exhibited less pronounced additive effects and heritabilities. Moreover, the study detected seven pairs of additive × additive QTL interactions influencing the number of seeds per siliqua and their corresponding interactions with the environment. The effects of these epistatic QTL interactions ranged from -4.930 8 to 4.193 6, with the genetic effects of these interactions across different environments approximating zero. Broad-sense heritability of the number of seeds per siliqua trait was 80.98%, while the narrow-sense heritability was 30.98%. 【Conclusion】 Although the number of seeds per siliqua in mustard-type rapeseed is somewhat influenced by environmental factors, the additive effects governing this trait appear to be minimally impacted by the environment, and the epistatic QTL interactions are not substantial.

    参考文献
    相似文献
    引证文献
引用本文

梁能,姚艳梅.芥菜型油菜每角籽粒数QTL 的上位性互作和环境互作分析[J].西北植物学报,2024,44(2):246-254

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-06-06
  • 最后修改日期:2023-10-31
  • 录用日期:2023-11-17
  • 在线发布日期: 2024-01-19
  • 出版日期:

微信公众号二维码

手机版网站二维码