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中国油料作物学报 ›› 2021, Vol. 43 ›› Issue (5): 825-.doi: 10.19802/j.issn.1007-9084.2020105

• 遗传育种 • 上一篇    下一篇

接种根瘤菌环境下大豆叶形遗传及QTL定位分析

杨永庆:E-mail: yyq287346@163.com   

  1. 1. 福建农林大学资源与环境学院/根系生物学研究中心,福建 福州,350002; 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,河北省作物遗传育种实验室,河北 石家庄,050035;3. 黑龙江省农业科学院绥化分院,黑龙江 绥化,152052
  • 出版日期:2021-11-01 发布日期:2021-11-01
  • 通讯作者: 杨春燕:E-mail: chyyang66@163.com
  • 基金资助:
    国家十三五重点研发计划(2016YFD0100201);国家现代农业产业技术体系建设专项(CARS-04);福建农林大学科技创新专项基金项目(CXZX201828)

Genetic analysis and QTL mapping of soybean leaf shape under rhizobia inoculated environment

  1. 1. College of Resources and Environment, Fujian Agriculture and Forestry University/Root Biology Center, Fuzhou 350002, China; 2. Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences, National Soybean Improvement Center Shijiazhuang Sub-Center, Huang-huai-hai Key Laboratory of Biology and Genetic Improvement of Soybean, Ministry of Agriculture and Rural Affairs, Laboratory of Crop Genetics and Breeding of Hebei, Shijiazhuang 050035, China; 3. Suihua Institute of Heilongjiang Academy of Agricultural Science, Suihua 152052, China
  • Online:2021-11-01 Published:2021-11-01

摘要: 为探究接种根瘤菌环境下影响大豆叶形的遗传基础,本研究利用两个叶形具有显著差异的大豆品种及RIL群体,在接种和不接种根瘤菌环境下对大豆叶形性状进行遗传和QTL定位等分析。结果显示,叶形相关性状的遗传率在0.60~0.95之间,环境与基因型间存在互作效应,并且接种根瘤菌可以显著影响叶形指数(LS)与单株粒数(GN)、单株荚数(PD)和单株粒重(GW)的相关系数。此外,两种处理下共检测到8个QTL位点,LOD值范围在2.50~7.03,可解释6.4%~16.9%的遗传变异。其中,qLS-15可解释由根瘤菌×基因型互作引起叶形性状6.4%~9.3%的遗传变异,LOD值在2.50~3.69之间,表明qLS-15是与环境互作的主要遗传位点之一。综上所述,根瘤菌可以通过qLS-15影响大豆叶形,研究结果为解析根瘤菌提升大豆产量的内在机制提供了理论依据。

关键词: 大豆叶形, 根瘤菌, 遗传互作, QTL定位

Abstract: To determine the genetic basis of soybean leaf shape under the environment with rhizobia inoculation, two soybean varieties with contrast leaf shape and their derived RIL population were used for genetic and QTL analysis under both environment with and without rhizobia inoculation. As results showed that the heritability of leaf shape related traits varied from 0.60 to 0.95 and there also existed interactions between environment and genotype, meanwhile, rhizobia inoculation could significantly affect the correlation coefficients of leaf shape index (LS) with grain number (GN), pod number (PN) and grain weight (GW) per plant. In addition, total 8 QTL with LOD values varied from 2.50~7.03, which could explain 6.4%~16.9% genetic variation, were determined under both environments with and without rhizobia inoculation. Among them, qLS-15 with LOD values varied from 2.50~3.69 could explain the 6.4%~9.3% genetic variation caused by rhizobia * genotype interaction for leaf shape traits, suggesting that qLS-15 is one of the main genetic loci that could interact with the environment. In summary, rhizobia could affect soybean leaf shape through genetic locus of qLS-15, these results provide a theoretical basis for analyzing the mechanism of rhizobia in increasing soybean yield.

Key words: soybean leaf shape, rhizobium, genetic interaction, QTL mapping

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