Journal of Integrative Agriculture ›› 2017, Vol. 16 ›› Issue (09): 1900-1912.DOI: 10.1016/S2095-3119(16)61539-3

• 论文 • 上一篇    下一篇

YANG Guang, ZHAI Hong, WU Hong-yan, ZHANG Xing-zheng, LÜ Shi-xiang, WANG Ya-ying, LI Yu-qiu, HU Bo, WANG Lu, WEN Zi-xiang, WANG De-chun, WANG Shao-dong, Kyuya Harada, XIA Zheng-jun, XIE Fu-ti   

  • 收稿日期:2016-08-22 出版日期:2017-09-20 发布日期:2017-09-05

QTL effects and epistatic interaction for flowering time and branch number in a soybean mapping population of Japanese×Chinese cultivars

YANG Guang1, 4*, ZHAI Hong2*, WU Hong-yan2, ZHANG Xing-zheng2, 3, LÜ Shi-xiang5, WANG Ya-ying2, 3, LI Yu-qiu2, 3, HU Bo2, WANG Lu2, 3, WEN Zi-xiang6, WANG De-chun6, WANG Shao-dong7, Kyuya Harada8, XIA Zheng-jun2, XIE Fu-ti1   

  1. 1 Soybean Research Institute, Shenyang Agricultural University, Shenyang 110866, P.R.China
    2 Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, P.R.China
    3 University of Chinese Academy of Sciences, Beijing 100049, P.R.China
    4 Institute of Economic Crop of Liaoning, Liaoyang 111000, P.R.China
    5 Information Center, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, P.R.China
    6 Department of Plant, Soil and Microbial Sciences, Michigan State University East Lansing, Michigan 48824, USA
    7 National Research Center of Soybean Engineering and Technology, Northeast Agricultural University, Harbin 150028, P.R.China
    8 Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
  • Received:2016-08-22 Online:2017-09-20 Published:2017-09-05
  • Contact: Correspondence XIE Fu-ti, Tel/Fax: +86-24-88487135, E-mail: snsoybean@sohu.com; XIA Zheng-jun, Tel: +86-451-87501708, Fax: +86-451-86603736, E-mail: xiazhj@iga.ac.cn
  • About author:YANG Guang, E-mail: ouyanghuiru@163.com;
  • Supported by:

    This work was supported by the National Key Research and Development Program of China (2016YFD0100201 and 2016YFD0101902), the Knowledge Innovation Project of Chinese Academy of Sciences (XDA08010105), and the National Natural Science Foundation of China (31471518 and 31301338).

Abstract:    Flowering time and branching type are important agronomic traits related to the adaptability and yield of soybean. Molecular bases for major flowering time or maturity loci, E1 to E4, have been identified. However, more flowering time genes in cultivars with different genetic backgrounds are needed to be mapped and cloned for a better understanding of flowering time regulation in soybean. In this study, we developed a population of Japanese cultivar (Toyomusume)×Chinese cultivar (Suinong 10) to map novel quantitative trait locus (QTL) for flowering time and branch number. A genetic linkage map of a F2 population was constructed using 1 306 polymorphic single nucleotide polymorphism (SNP) markers using Illumina SoySNP8k iSelect BeadChip containing 7 189 (SNPs). Two major QTLs at E1 and E9, and two minor QTLs at a novel locus, qFT2_1 and at E3 region were mapped. Using other sets of F2 populations and their derived progenies, the existence of a novel QTL of qFT2_1 was verified. qBR6_1, the major QTL for branch number was mapped to the proximate to the E1 gene, inferring that E1 gene or neighboring genetic factor is significantly contributing to the branch number.

Key words: soybean ,  quantitative trait loci ,  SNP ,  flowering time ,  branch number