Genome-wide SNP discovery and QTL mapping for economic traits in a recombinant inbred line of Oryza sativa
文献类型： 外文期刊
作者： Li, Gengmi 1 ; Yang, Qianhua 1 ; Li, Deqiang 2 ; Zhang, Tao 1 ; Yang, Li 1 ; Qin, Jian 1 ; Tang, Bin 1 ; Guo, Xiaojiao 1 ; C 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Key Lab Southwest Rice Biol & Genet Breeding, Minist Agr, Rice & Sorghum Res Inst,Luzhou Branch,Natl Rice I, Deyang 618000, Peoples R China
2.Sichuan Agr Univ, Rice Res Inst, Coll Agron, Chengdu, Peoples R China
3.Chinese Acad Agr Sci, China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Peoples R China
关键词： genetic linkage map; quantitative trait loci; recombinant inbred line
期刊名称：FOOD AND ENERGY SECURITY （ 影响因子：4.109； 五年影响因子：8.33 ）
ISSN： 2048-3694
年卷期： 2021 年 10 卷 2 期
页码：
收录情况： SCI
摘要： The objective of the study was to understand the genetic basis of eight traits conferring grain appearance and yield in a recombinant inbred line (RIL8) derived from a cross between cultivated Indica rice varieties Dexiang074B and Pujiang6. We conducted whole genome re-sequencing for the two parental lines and genotyping by sequencing (GBS) for the RIL8 population. Next, we aligned the clean reads to the rice genome Nipponbare IRGSP 1.0, constructed the genetic linkage map (GLM), and performed the quantitative trait loci (QTL) analysis. In total, 2631 high-quality markers were generated for 315 RIL8 samples. We identified a rice GLM containing 12 linkage groups (total map distance: 1946.71 cM; average map distance: 0.74 cM) and 98 QTLs related to the rice yield, including 31 high credible QTLs. In addition, 39 QTLs were identified to be associated with the G*E interaction. While most of the QTLs were co-localized with previously reported rice QTLs, some novel QTLs were identified for the first time in this study. These findings provide a genetic basis for developing cultivated rice with good economic characteristics based on molecular breeding technologies.
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