Genetic dissection of and genomic selection for seed weight, pod length,and pod width in soybean

作     者：Yijie Chen Yajun Xiong Huilong Hong Gang Li Jie Gao Qingyuan Guo Rujian Sun Honglei Ren Fan Zhang Jun Wang Jian Song Lijuan Qiu Yijie Chen;Yajun Xiong;Huilong Hong;Gang Li;Jie Gao;Qingyuan Guo;Rujian Sun;Honglei Ren;Fan Zhang;Jun Wang;Jian Song;Lijuan Qiu

作者机构：College of AgricultureYangtze UniversityJingzhou 434025HubeiChina College of Life SciencesYangtze UniversityJingzhou 434025HubeiChina National Key Facility for Gene Resources and Genetic Improvement/Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Soybean Research InstituteHeilongjiang Academy of Agricultural SciencesHarbin 150086HeilongjiangChina Engineering Research Center of Ecology and Agricultural Use of WetlandMinistry of EducationJingzhou 434025HubeiChina Hulunbuir Institute of Agriculture and Animal HusbandryHulunbuir 021000Inner MongoliaChina 

出 版 物：《The Crop Journal》 (作物学报（英文版）)

年 卷 期：2023年第11卷第3期

页      面：832-841页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the Key Science and Technology Project of Yunnan(202202AE090014) the National Natural Science Foundation of China(32072016) the Agricultural Science and Technology Innovation Program(ASTIP)of Chinese Academy of Agricultural Sciences the Open Fund of Engineering Research Center of Ecology and Agricultural Use of Wetland,Ministry of Education,China(201910) 

主　　题：Soybean Seed weight Pod size Genetic analysis Genomic selection 

摘      要：A biparental soybean population of 364 recombinant inbred lines(RILs)derived from Zhongdou 41×ZYD02.878 was used to identify quantitative trait loci(QTL)associated with hundred-seed weight(100-SW),pod length(PL),and pod width(PW).100-SW,PL,and PW showed moderate correlations among one another,and 100-SW was correlated most strongly with PW(0.64–0.74).Respectively 74,70,75 and19 QTL accounting for 38.7%–78.8%of total phenotypic variance were identified by inclusive composite interval mapping,restricted two-stage multi-locus genome-wide association analysis,3 variancecomponent multi-locus random-SNP-effect mixed linear model analysis,and conditional genome-wide association *** these QTL,189 were novel,and 24 were detected by multiple *** loci were associated with 100-SW,PL,and PW and may be pleiotropic loci.A total of 284 candidate genes were identified in colocalizing QTL regions,including the verified gene Seed thickness 1(ST1).Eleven genes with functions involved in pectin biosynthesis,phytohormone,ubiquitin-protein,and photosynthesis pathways were prioritized by examining single nucleotide polymorphism(SNP)variation,calculating genetic differentiation index,and inquiring gene *** prediction accuracies of genomic selection(GS)for 100-SW,PL,and PW based on single trait-associated markers reached 0.82,0.76,and 0.86 respectively,but selection index(SI)-assisted GS strategy did not increase GS efficiency and inclusion of trait-associated markers as fixed effects reduced prediction *** results shed light on the genetic basis of 100-SW,PL,and PW and provide GS models for these traits with potential application in breeding programs.