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当前位置: 首页 > 文章 > QTL effects and epistatic interaction for flowering time and branch number in a soybean mapping population of JapanesexChinese cultivars 农业科学学报 (英文) 2017,16 (9)
Position: Home > Articles > QTL effects and epistatic interaction for flowering time and branch number in a soybean mapping population of JapanesexChinese cultivars Journal of Integrative Agriculture 2017,16 (9)

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

作  者：
Yang Guang;Zhai Hong;Wu Hong-yan;Zhang Xing-zheng;Lu Shi-xiang;Wang Ya-ying;Li Yu-qiu;Hu Bo;Wang Lu;Wen Zi-xiang;Wang De-chun;Wang Shao-dong;Harada, Kyuya;Xia Zheng-jun;Xie Fu-ti
单  位：
Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan;Michigan State Univ, Dept Plant Soil & Microbial Sci, E Lansing, MI 48824 USA;Inst Econ Crop Liaoning, Liaoyang 111000, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China;Shenyang Agr Univ, Soybean Res Inst, Shenyang 110866, Liaoning, Peoples R China;Northeast Agr Univ, Natl Res Ctr Soybean Engn & Technol, Harbin 150028, Heilongjiang, Peoples R China;Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Soybean Mol Design Breeding, Harbin 150081, Heilongjiang, Peoples R China;Heilongjiang Acad Agr Sci, Informat Ctr, Harbin 150086, Heilongjiang, Peoples R China
关键词：
soybean;quantitative trait loci;SNP;flowering time;branch number
摘  要：
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, El 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)xChinese cultivar (Suinong 10) to map novel quantitative trait locus (QTL) for flowering time and branch number. A genetic linkage map of a F-2 population was constructed using 1 306 polymorphic single nucleotide polymorphism (SNP) markers using Illumine S0ySNP8k iSelect BeadChip containing 7 189 (SNPs). Two major QTLs at El and E9, and two minor QTLs at a novel locus, qFT2_1 and at E3 region were mapped. Using other sets of F-2 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 El gene, inferring that El gene or neighboring genetic factor is significantly contributing to the branch number.

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