Detection of Quantitative Trait Loci for Yield and Drought Tolerance Traits in Soybean Using a Recombinant Inbred Line Population

查看全文 作　　者：Weijun [1,2]Du;Deyue [1]Yu;Sanxiong [1]Fu

机构地区：[1]National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China;[2]College of Agronomy, Shanxi Agricultural University, Taigu 030801, China

出　　处：《Journal of Integrative Plant Biology》索引2009年第51卷第9期,共11页

基　　金：Supported by Grants from the International Atomic Energy Agency (CPR-12988);National Natural Science Foundation of China (30471094 and 30771362);State Basic Research and Development Plan (2004CB117206);National High-tech Research and Development Program (2006AA10Z1C1);the Talent Inducing Program from the Ministry of Education (B08025);the Key Program of Science and Technology of Shanxi Province (051017);the Scientific Research Foundation for Young Academic Leaders from University in Shanxi Province (200425) 摘　　要：To investigate the genetic basis of drought tolerance in soybean(Glycine max L.Merr.) a recombinant inbred population with 184 F2:7:11 lines developed from a cross between Kefeng1(drought tolerant) and Nannong1138-2(drought sensitive) were tested under water-stressed and well-watered conditions in field and greenhouse trials.Traits measured included leaf wilting coefficient,excised leaf water loss and relative water content as indicators of plant water status and seed yield.A total of 40 quantitative trait loci(QTLs) were identified:17 for leaf water status traits under drought stress and 23 for seed yield under well-watered and drought-stressed conditions in both field and greenhouse trials.Two seed yield QTLs were detected under both well-watered and drought-stressed conditions in the field on molecular linkage group H and D1b,while two seed yield QTLs on molecular linkage group C2 were found under greenhouse conditions.Several QTLs for traits associated with plant water status were identified in both field and greenhouse trials,including two leaf wilting coefficient QTLs on molecular linkage group A2 and one excised leaf water loss QTL on molecular linkage group H.Phenotypic correlations of traits suggested several QTLs had pleiotropic or location-linked associations.These results will help to elucidate the genetic basis of drought tolerance in soybean,and could be incorporated into a marker-assisted selection breeding program to develop high-yielding soybean cultivars with improved tolerance to drought stress. 关键词：重组自交系群体数量性状位点抗旱性状产量大豆检测

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Detection of Quantitative Trait Loci for Yield and Drought Tolerance Traits in Soybean Using a Recombinant Inbred Line Population

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