QTL Mapping of Soybean Protein Content from High-Protein Soybean ZhongYin1106
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1.College of Agriculture, Yangtze University,Hubei Jingzhou;2.Soybean Research Center, Heihe Institute, Heilongjiang Academy of Agricultural Sciences;3.Soybean Research Institute, Heilongjiang Academy Agricultural of Science;4.National Key Facility for Crop Gene Resources and Genetic Improvement / Key Laboratory of Soybean Biology in Beijing (MOA) / Institute of Crop Sciences, Chinese Academy of Agricultural Sciences

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Innovation project of Chinese Academy of Agricultural Sciences; Scientific Research project of Heilongjiang Academy of Agricultural Sciences(2017XQ04); open fund of Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education (KF201808)

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    Abstract:

    The protein content in soybean is genetically controlled by multiple genes. Identification of the quantitative traits (QTL) associating with this trait will benefit for a practice use in soybean breeding. In this study, a backcross population consisting of 384 lines was derived from a cross of elite cultivar Heihe50 as recurrent parent and high protein accession ZhongYin1106 as donor parent. The protein content of parents and the offspring segregants was detected by Near-infrared spectrometer, and genotyping was conducted with SSR molecular markers. A genetic linkage map was constructed by software QTL ICIMapping4.1. Nine QTL associating with protein content were revealed, including seven QTL detecting by interval mapping (IM) and 3 QTLs detecting by inclusive composite interval mapping (ICIM). One QTL qPro-8-1, which was located in a 218.71kb interval of markers SSR_50 and SSR_51, can explain 2.26% and 7.85% phenotype variance using both IM and ICIM mapping methods, respectively. The locus qPro-8-1 is genetically independent of other QTL of protein content. Thus, this work provided elite materials and theoretical foundation in molecular breeding for high-protein soybean varieties.

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History
  • Received:June 06,2019
  • Revised:June 12,2019
  • Adopted:June 24,2019
  • Online: January 17,2020
  • Published:
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