Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.3835/plantgenome2018.11.0091 |
| Genetic Diversity, Population Structure, and Linkage Disequilibrium of Pearl Millet | |
| Serba, Desalegn D.1; Muleta, Kebede T.2; St Amand, Paul2; Bernardo, Amy2; Bai, Guihua2; Perumal, Ramasamy1; Bashir, Elfadil1 | |
| 通讯作者 | Serba, Desalegn D. |
| 来源期刊 | PLANT GENOME
 |
| EISSN | 1940-3372 |
| 出版年 | 2019 |
| 卷号 | 12期号:3 |
| 英文摘要 | Pearl millet [Cenchrus americanus (L.) Morrone syn. Pennisetum glaucum (L.) R. Br.] is one of the most extensively cultivated cereals in the world, after wheat (Triticum aestivum L.), maize (Zea mays L.), rice (Oryza sativa L.), barley (Hordeum vulgare L.), and sorghum [Sorghum bicolor (L.) Moench]. It is the main component of traditional farming systems and a staple food in the arid and semiarid regions of Africa and southern Asia. However, its genetic improvement is lagging behind other major cereals and the yield is still low. Genotyping-by-sequencing (GBS)-based single-nucleotide polymorphism (SNP) markers were screened on a total of 398 accessions from different geographic regions to assess genetic diversity, population structure, and linkage disequilibrium (LD). By mapping the GBS reads to the reference genome sequence, 82,112 genome-wide SNPs were discovered. The telomeric regions of the chromosomes have the higher SNP density than in pericentromeric regions. Model-based clustering analysis of the population revealed a hierarchical genetic structure of six subgroups that mostly overlap with the geographic origins or sources of the genotypes but with differing levels of admixtures. A neighbor-joining phylogeny analysis revealed that germplasm from western Africa rooted the dendrogram with much diversity within each subgroup. Greater LD decay was observed in the west-African subpopulation than in the other subpopulations, indicating a long history of recombination among landraces. Also, genome scan of genetic differentiatation detected different selection histories among subpopulations. These results have potential application in the development of genomic-assisted breeding in pearl millet and heterotic grouping of the lines for improved hybrid performance. |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | USA |
| 开放获取类型 | gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000498828100004 |
| WOS关键词 | PENNISETUM-GLAUCUM ; RECOMBINATION ; MODEL ; SET ; MAP ; ASSOCIATION ; IMPROVEMENT ; EVOLUTION ; TRAITS ; PLANT |
| WOS类目 | Plant Sciences ; Genetics & Heredity |
| WOS研究方向 | Plant Sciences ; Genetics & Heredity |
| EI主题词 | 2019-11-01 |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/310400 |
| 作者单位 | 1.Kansas State Univ, Agr Res Ctr Hays, 1232 240th Ave, Hays, KS 67601 USA; 2.USDA ARS, Hard Winter Wheat Genet Res Unit, Manhattan, KS USA |
| 推荐引用方式 GB/T 7714 | Serba, Desalegn D.,Muleta, Kebede T.,St Amand, Paul,et al. Genetic Diversity, Population Structure, and Linkage Disequilibrium of Pearl Millet[J],2019,12(3). |
| APA | Serba, Desalegn D..,Muleta, Kebede T..,St Amand, Paul.,Bernardo, Amy.,Bai, Guihua.,...&Bashir, Elfadil.(2019).Genetic Diversity, Population Structure, and Linkage Disequilibrium of Pearl Millet.PLANT GENOME,12(3). |
| MLA | Serba, Desalegn D.,et al."Genetic Diversity, Population Structure, and Linkage Disequilibrium of Pearl Millet".PLANT GENOME 12.3(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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