基于SNPs标记的部分栽培稻品种遗传结构分析  

Genetic Structure Revealed by Single-nucleotide Polymorphisms (SNPs) of Some Diverse Accessions of Cultivated Rice (Oryza sativa L.)

作　　者：高月[1] 姜树坤[2] 钟鸣[1] 马慧[1] 郭志富[1] 陈丽静[1] 李浩戈[1] 徐正进 

机构地区：[1]沈阳农业大学,辽宁省农业生物技术重点实验室,辽宁沈阳110161 [2]黑龙江省农业科学院耕作栽培研究所,黑龙江哈尔滨150086 [3]辽宁省北方粳稻育种重点实验室,辽宁沈阳110161

出　　处：《华北农学报》2012年第4期65-72,共8页Acta Agriculturae Boreali-Sinica

基　　金：“十二五”国家科技支撑计划(2011BAD35B02-01);国家自然科学基金(30971845);辽宁省农业生物技术重点实验室专项资金

摘　　要：利用分布于水稻12条染色体上的190个SNPs位点,对97个水稻品种进行了遗传多样性和遗传结构分析。结果表明,190个SNPs位点中有92个具有多态性,多态性比率为48.42%。品种间的遗传相似系数(GS)变化范围在0.34～1.00之间,平均GS为0.87。贝叶斯聚类和UPGMA法聚类的结果相似,均将供试材料分成籼、粳2个亚种,且品种间的亲缘关系与地理来源关系不大。通过SNPs标记的遗传多样性分析结果表明,供试材料在亚种内的亲缘关系较近、遗传基础狭窄,部分供试品种具有相似的遗传背景。The genetic diversity and structure of 97 rice varieties were assessed with 190 single-nucleotide poly- morphisms （SNPs） even distribution on the 12 chromosomes in this study. The result showed that 92 SNPs have polymorphism in 190 SNPs with a 48.42% polymorphism rate. Genetic similarity between different varieties ranged from 0.34 to 1.00. The mean GS was 0.87. According to bayesian and UPGMA cluster,97 rice varieties were sepa- rated into two subspecies,indica and japonica. The genetic relationship among these rice varieties was not in accord with their geographical origins. And these results indicate that these rice varieties have close genetic relationships and narrow genetic basis within subspecies.

关 键 词：SNPs标记 水稻品种 遗传结构 遗传多样性 

分 类 号：S511.03[农业科学—作物学]