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Detection of QTLs Regulating Six Agronomic Traits of Rice Based on Chromosome Segment Substitution Lines of Common Wild Rice (Oryza rufipogon Griff.) and Mapping of qPH1.1 and qLMC6.1

文献类型： 外文期刊

作者： Zhao, Neng 1 ; Yuan, Ruizhi 1 ; Usman, Babar 2 ; Qin, Jiaming 4 ; Yang, Jinlian 1 ; Peng, Liyun 5 ; Mackon, Enerand 5 ; Liu, Fang 1 ; Qin, Baoxiang 1 ; Li, Rongbai 1 ;

作者机构： 1.Guangxi Univ, Coll Agr, State Key Lab Conservat & Utilizat Subtrop Agro Bi, Nanning 530004, Peoples R China

2.Kyung Hee Univ, Grad Sch Green Bio Sci, Yongin 17104, South Korea

3.Kyung Hee Univ, Crop Biotech Inst, Yongin 17104, South Korea

4.Guangxi Acad Agr Sci, Maize Res Inst, Nanning 530007, Peoples R China

5.Guangxi Univ, Coll Life Sci & Technol, State Key Lab Conservat & Utilizat Subtrop Agrobio, Nanning 530005, Peoples R China

关键词： agronomic traits; chromosome segment substitution lines (CSSLs); common wild rice (Oryza rufipogon); molecular markers; QTL mapping; qLMC6; 1; qPH1

期刊名称：BIOMOLECULES （ 影响因子：6.064； 五年影响因子：6.191 ）

ISSN：

年卷期： 2022 年 12 卷 12 期

页码：

收录情况： SCI

摘要： Wild rice is a primary source of genes that can be utilized to generate rice cultivars with advantageous traits. Chromosome segment substitution lines (CSSLs) are consisting of a set of consecutive and overlapping donor chromosome segments in a recipient's genetic background. CSSLs are an ideal genetic population for mapping quantitative traits loci (QTLs). In this study, 59 CSSLs from the common wild rice (Oryza rufipogon Griff.) accession DP15 under the indica rice cultivar (O. sativa L. ssp. indica) variety 93-11 background were constructed through multiple backcrosses and marker-assisted selection (MAS). Through high-throughput whole genome re-sequencing (WGRS) of parental lines, 12,565 mapped InDels were identified and designed for polymorphic molecular markers. The 59 CSSLs library covered 91.72% of the genome of common wild rice accession DP15. The DP15-CSSLs displayed variation in six economic traits including grain length (GL), grain width (GW), thousand-grain weight (TGW), grain length-width ratio (GLWR), plant height (PH), and leaf margin color (LMC), which were finally attributed to 22 QTLs. A homozygous CSSL line and a purple leave margin CSSL line were selected to construct two secondary genetic populations for the QTLs mapping. Thus, the PH-controlling QTL qPH1.1 was mapped to a region of 4.31-Mb on chromosome 1, and the LMC-controlling QTL qLMC6.1 was mapped to a region of 370-kb on chromosome 6. Taken together, these identified novel QTLs/genes from common wild rice can potentially promote theoretical knowledge and genetic applications to rice breeders worldwide.

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