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大豆蛋白质脂肪及脂肪酸组分相关QTL定位

林洋1,2,**,史晓蕾2,**,陈强2,刘兵强2,杨庆2,于慧娟1,2,闫龙2,武小霞1,*,杨春燕2,*   

  1. 1 东北农业大学农学院, 黑龙江哈尔滨150030; 2 河北省农林科学院粮油作物研究所 / 国家大豆改良中心石家庄分中心 / 农业农村部黄淮海大豆生物学与遗传育种重点实验室 / 河北省遗传育种重点实验室, 河北石家庄050035
  • 收稿日期:2025-03-25 修回日期:2025-08-13 接受日期:2025-08-13 网络出版日期:2025-08-22
  • 基金资助:
    本研究由财政部和农业农村部国家现代农业产业技术体系建设专项(CARS-04-PS09), 河北省农林科学院科技创新专项(2022KJCXZX-LYS-7)和河北省现代农业产业技术体系项目(HBCT2024060202)资助。

QTL mapping of soybean protein, oil, and fatty acid components

LIN Yang1,2,**,SHI Xiao-Lei2,**,CHEN Qiang2,LIU Bing-Qiang2,YANG Qing2,YU Hui-Juan1,2,YAN Long2, WU Xiao-Xia1,*,YANG Chun-Yan2,*   

  1. 1 College of Agriculture, Northeast Agricultural University, Harbin 150030, Heilongjiang, China; 2 Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences / Shijiazhuang Branch Center of National Center for Soybean Improvement / Huang-Huai-Hai Key Laboratory of Biology and Genetic Improvement of Soybean, Ministry of Agriculture and Rural Affairs / the Key Laboratory of Crop Genetics and Breeding, Shijiazhuang 050035, Hebei, China
  • Received:2025-03-25 Revised:2025-08-13 Accepted:2025-08-13 Published online:2025-08-22
  • Supported by:
    This study was supported by the China Agriculture Research System of MOF and MARA (CARS-04-PS09); HAAFS Agriculture Science and Technology Innovation Project (2022KJCXZX-LYS-7); and the Hebei Agriculture Research System Project (HBCT2024060202).

摘要:

大豆是重要的粮油作物,可为人类提供必需蛋白质和脂肪等营养物质。本研究以河北省农林科学院粮油作物研究所构建的冀豆17×冀豆12” RIL群体为材料,利用已构建遗传图谱,通过QTL IciMapping 4.1软件,对3个环境中的大豆蛋白质、脂肪含量以及5种脂肪酸组分进行QTL定位。分别定位到7个、7个、45个与蛋白质、脂肪、5种脂肪酸组分相关的QTL。这些位点分别分布在除1716号染色体以外的17条染色体上。其中1个与蛋白质含量相关的QTL2个与脂肪含量相关的QTL9个与脂肪酸含量相关的QTL在多个环境中被重复检测到。首次检测到2个与棕榈酸含量有关的QTL位点,1个与亚麻酸含量有关的QTL位点。这些稳定的主效位点对于分子标记辅助大豆品质改良具有重要意义。

关键词: 大豆, 蛋白质, 脂肪, 脂肪酸, QTL

Abstract:

Soybean is a major grain and oil crop that provides essential proteins and fats for human nutrition. In this study, a recombinant inbred line (RIL) population derived from the cross “Jidou 17 × Jidou 12”, developed by the Oil and Grain Crops Research Institute of the Hebei Academy of Agriculture and Forestry Sciences, was used as the experimental material. Based on a previously constructed genetic map, QTL mapping for protein content, oil content, and five fatty acid components was performed in three different environments using the QTL IciMapping 4.1 software. A total of 7, 7, and 45 QTLs related to protein, oil, and fatty acid contents, respectively, were identified. These QTLs were distributed across 17 chromosomes, excluding chromosomes 1, 7, and 16. One QTL for protein content, two for oil content, and nine for fatty acid content were consistently detected across multiple environments. Notably, two QTLs associated with palmitic acid content and one associated with linolenic acid content were identified for the first time. These stable and major loci provide valuable targets for molecular marker-assisted improvement of soybean quality.

Key words: soybean, protein, oil, fatty acid, QTL

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