Knowledge Management System of Northwest Institute of Plateau Biology, CAS
| Population Structure and Linkage Disequilibrium in Six-Rowed Barley Landraces from the Qinghai-Tibetan Plateau | |
| Wang, Lei1,2; Xu, Jinqing1,2; Xia, Tengfei1,2; Zhang, Huaigang1; Liu, Dengcai1,3; Shen, Yuhu1 | |
| 2014-09-01 | |
| 发表期刊 | CROP SCIENCE
 |
| ISSN | 0011-183X |
| 卷号 | 54期号:5页码:2011-2022 |
| 文章类型 | Article |
| 摘要 | The genetic diversity, population structure, and extent of linkage disequilibrium (LD) were investigated at a genome-wide level in 255 six-rowed barley (Hordeum vulgare L. ssp. Vulgare) landraces from the Qinghai-Tibetan Plateau using 1264 polymorphic diversity array technology (DArT) markers. The mean polymorphism information content (PIC) of the DArT markers ranged between 0.008 and 0.500 with an average of 0.213. Bayesian, principal coordinate analysis, and phylogenetic analysis supported that six-rowed barley landraces from this region are divided into five distinct subpopulations centered on the regions of origin of the germ-plasm. The genetic distances calculated for all the individual pairs were geographically dependent, as revealed by Mantel tests (r = 0.35, P < 0.001) and spatial autocorrelation analysis. The LD values, expressed as r(2), declined with increasing genetic distance, and the same tendency occurred on each chromosome. In general, LD values were low (9.1% of adjacent markers; P < 0.001), and mean LD values across the whole genome decayed to below the critical r(2) of 0.22 after 3.32 cM. Approximately 19.0% of marker pairs (mean r(2) = 0.586) located on the same chromosome and 4.9% of pairs (mean r(2) = 0.318) located on different chromosomes were in LD (r(2) = 0.22). Our results discerned relevant patterns of genetic diversity, population structure, and LD among members of a Qinghai-Tibet Plateau barley landraces panel proposed to be 'typical' of a target region or environment and have important implications for further studies on association mapping and practical breeding in high-altitude naked barley.; The genetic diversity, population structure, and extent of linkage disequilibrium (LD) were investigated at a genome-wide level in 255 six-rowed barley (Hordeum vulgare L. ssp. Vulgare) landraces from the Qinghai-Tibetan Plateau using 1264 polymorphic diversity array technology (DArT) markers. The mean polymorphism information content (PIC) of the DArT markers ranged between 0.008 and 0.500 with an average of 0.213. Bayesian, principal coordinate analysis, and phylogenetic analysis supported that six-rowed barley landraces from this region are divided into five distinct subpopulations centered on the regions of origin of the germ-plasm. The genetic distances calculated for all the individual pairs were geographically dependent, as revealed by Mantel tests (r = 0.35, P < 0.001) and spatial autocorrelation analysis. The LD values, expressed as r(2), declined with increasing genetic distance, and the same tendency occurred on each chromosome. In general, LD values were low (9.1% of adjacent markers; P < 0.001), and mean LD values across the whole genome decayed to below the critical r(2) of 0.22 after 3.32 cM. Approximately 19.0% of marker pairs (mean r(2) = 0.586) located on the same chromosome and 4.9% of pairs (mean r(2) = 0.318) located on different chromosomes were in LD (r(2) = 0.22). Our results discerned relevant patterns of genetic diversity, population structure, and LD among members of a Qinghai-Tibet Plateau barley landraces panel proposed to be 'typical' of a target region or environment and have important implications for further studies on association mapping and practical breeding in high-altitude naked barley. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 关键词[WOS] | HORDEUM-VULGARE L. ; CULTIVATED BARLEY ; GENETIC DIVERSITY ; DART MARKERS ; WILD BARLEY ; LENGTH POLYMORPHISMS ; CONSENSUS MAP ; SSR ; DOMESTICATION ; GENOME |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Agriculture |
| WOS类目 | Agronomy |
| WOS记录号 | WOS:000341489800010 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.75.249.4/handle/363003/4193 |
| 专题 | 中国科学院西北高原生物研究所 |
| 作者单位 | 1.Chinese Acad Sci, Northwest Plateau Inst Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Sichuan Agr Univ, Triticeae Res Inst, Chengdu 611130, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Lei,Xu, Jinqing,Xia, Tengfei,et al. Population Structure and Linkage Disequilibrium in Six-Rowed Barley Landraces from the Qinghai-Tibetan Plateau[J]. CROP SCIENCE,2014,54(5):2011-2022. |
| APA | Wang, Lei,Xu, Jinqing,Xia, Tengfei,Zhang, Huaigang,Liu, Dengcai,&Shen, Yuhu.(2014).Population Structure and Linkage Disequilibrium in Six-Rowed Barley Landraces from the Qinghai-Tibetan Plateau.CROP SCIENCE,54(5),2011-2022. |
| MLA | Wang, Lei,et al."Population Structure and Linkage Disequilibrium in Six-Rowed Barley Landraces from the Qinghai-Tibetan Plateau".CROP SCIENCE 54.5(2014):2011-2022. |
| 条目包含的文件 | 下载所有文件 | |||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Population Structure（4939KB） | 开放获取 | CC BY-NC-SA | 浏览 下载 | |||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论