您好，欢迎访问广东省农业科学院 机构知识库！
广东省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Molecular diversity and genetic structure of wild rice accessions (Oryza rufipogon Griff.) in Guangdong Province, China, as revealed by SNP markers

文献类型： 外文期刊

作者： Zhang, Jing 1 ; Sun, Bingrui 1 ; Li, Chen 1 ; Chen, Wenfeng 1 ; Jiang, Liqun 1 ; Lv, Shuwei 2 ; Fan, Zhilan 1 ; Pan, Daji 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou 510640, Peoples R China

2.Guangdong Prov Key Lab New Technol Rice Breeding, Guangzhou 510640, Peoples R China

关键词： Genetic diversity; Population structure; SNP; Common wild rice

期刊名称：GENETIC RESOURCES AND CROP EVOLUTION （ 影响因子：1.524； 五年影响因子：1.713 ）

ISSN： 0925-9864

年卷期：

页码：

收录情况： SCI

摘要： Common wild rice (Oryza rufipogon Griff.) is a valuable germplasm resource for rice genetic improvement. However, it is endangered due to habitat loss. Assessment of its genetic diversity is essential for germplasm characterization, utilization, and conservation. In the present study, we developed a 79,422-single-nucleotide polymorphism genome-wide array by specific-locus amplified fragment sequencing (SLAF-seq) and used it to genotype 110 common wild rice accessions from different agroclimatic zones in Guangdong Province, China. The number of SNPs on each chromosome was consistent with the physical length of the chromosome, and the average marker density was approximately 4.83 kb/SNP. The genome-wide linkage disequilibrium decayed to its half maximum within 0.52 kb for O. rufipogon. The common wild rice accessions were clustered into four subgroups, with some overlap in principal component analysis and a neighbor-joining tree that was also confirmed by model-based admixture. Analysis of molecular variance revealed significant genetic differentiation among individuals, accounting for 90.64% of the total molecular variance; however, the differences between the subgroups (Enping, Lufeng, Suixi and Fogang) were not significant. The significant genetic variations in resources collected in different years were observed in Enping and Suixi subgroups, but there was no significant genetic variation in Fogang subgroup. The pairwise fixation index (F-ST) suggested that the populations from Enping and Lufeng were most differentiated while those from Enping and Fogang were least differentiated. Our results illustrated clear genetic relationships among 110 common wild rice accessions, showing a potential molecular marker-based strategy for preserving the genetic diversity and accelerating the systematic utilization of these important wild rice resources.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广东省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台