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Construction of high-throughput genotyped chromosome segment substitution lines in rice (Oryza sativa L.) and QTL mapping for heading date

文献类型： 外文期刊

作者： Zhu, Jinyan 1 ; Niu, Yongchao; Tao, Yajun 2 ; Wang, Jun 1 ; Jian, Jianbo; Tai, Shuaishuai; Li, Jun; Yang, Jie 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Nanjing Branch, China Natl Ctr Rice Improvement, Jiangsu High Qual Rice Res & Dev Ctr,Inst Food Cr, Nanjing 210014, Peoples R China

2.Yangzhou Univ, Jiangsu Key Lab Crop Genet & Physiol, Key Lab Plant Funct Genom, Minist Educ,Coinnovat Ctr Modern Prod Technol Gra, Yangzhou 225009, Jiangsu, Peoples R China

3.Yangzhou Univ, Jiangsu Key Lab Crop Genet & Physiol, Key

关键词： Oryza sativa L;chromosome segment substitution lines;molecular marker-assisted selection;high-throughput resequencing

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

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收录情况： SCI

摘要： Chromosome segment substitution lines (CSSLs) provide ideal materials for quantitative trait loci (QTLs) mapping and genetic dissection of complex traits. In this study, we developed a set of CSSL population consisting of 175 lines, which were derived between the recipient Guangluai 4' and the donor Nipponbare'. Based on 260 molecular markers, we firstly constructed a physical map of core 97 lines. Then, these 97 lines were further genotyped based on resequencing data, and a resequencing-based physical map was constructed. Compared with the molecular marker-based physical map, the resequencing-based physical map of 97 lines contained 367 substituted segments with 252 newly discovered segments. The total size of the 367 substituted segments was 1,074Mb, which was 2.81 times the size of rice genome. Using the 97 CSSLs as materials, we identified nine QTLs for heading date and three of them were firstly reported. All the QTLs had positive additive effects, ranging from 9.50 to 16.50 days. These CSSLs may greatly help forge a new resource for functional genomics studies and molecular breeding in rice.

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[1]Effects of microcystins on the growth and the activity of superoxide dismutase and peroxidase of rape (Brassica napus L.) and rice (Oryza sativa L.). Chen, JZ,Song, LR,Dai, E,Gan, NQ,Liu, ZL.

[2]A genome-wide analysis of wide compatibility in rice and the precise location of the S-5 locus in the molecular map. Liu, KD,Wang, J,Li, HB,Xu, CG,Liu, AM,Li, XH,Zhang, QF. 1997

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