ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (4): 106-112. doi: 10.7668/hbnxb.20190517

Special Issue: Oil crops

• Crop Genetics·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

QTL Mapping of Protein and Oil Contents in Soybean Using Recombinant Inbred Population

TIAN Yu1, WANG Yanshu1, ZHANG Jianan1, XU Shichao1, DONG Quanzhong2, LI Wenbin1, LI Wenxia1, NING Hailong1   

  1. 1. College of Agriculture, Northeast Agricultural University, Key Laboratory of Soybean Biology, Ministry of Education, Key Laboratory of Soybean Biology and Breeding(Genetics), Ministry of Agriculture, Harbin 150030, China;
    2. Keshan Branch of Heilongjiang Academy of Agricultural Sciences, Keshan 161606, China
  • Received:2019-12-10 Published:2020-08-28

Abstract: Soybean is the main source of protein and oil in edible plants, improvement of protein and oil content are the major objective of soybean breeding programs. Mapping QTL by molecular markers has important theoretical significance and practical value for soybean molecular breeding. Here, two associated soybean recombinant inbred line (RIL) populations, Dongnong L13×Henong 60 (RIL6013) and Dongnong L13×Heihe 36 (RIL3613), comprising 134,156 RILs, respectively, were grown in three environments and their protein and oil contents were measured. The genetic map was constructed with 150,137 SSR markers respectively, and the complete interval mapping (ICIM) was used to map the oil and protein content. Through the analysis of phenotypic data, the phenotypic variation coefficients of protein and oil content in the two RIL populations were large, and there were significant differences in protein content and oil content in different environments. 8 QTLs for protein content were found in both RIL3613 and RIL6013 on 7 linkages, and 5 for oil content were found on 5 linkages. 1 QTL for oil content was repeatedly detected in 2 planting environments. In the located QTLs,7 protein content and 3 oil content QTLs were consistent with previous studies, and the other three(qPro-G-1, qOil-C1-1, qOil-H-1)were newly discovered in this study and were specific to the genetic background of this study. These results are of great significance for molecular design breeding of soybean quality traits.

Key words: Soybean, Protein content, Oil content, RIL, QTL

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Cite this article

TIAN Yu, WANG Yanshu, ZHANG Jianan, XU Shichao, DONG Quanzhong, LI Wenbin, LI Wenxia, NING Hailong. QTL Mapping of Protein and Oil Contents in Soybean Using Recombinant Inbred Population[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(4): 106-112. doi: 10.7668/hbnxb.20190517.

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