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Genetic Diversity Revealed by Single Nucleotide Polymorphism Markers in a Worldwide Germplasm Collection of Durum Wheat

文献类型: 外文期刊

作者: Ren, Jing 2 ; Sun, Daokun 1 ; Chen, Liang 1 ; You, Frank M. 3 ; Wang, Jirui 3 ; Peng, Yunliang 5 ; Nevo, Eviatar 6 ; Sun, 1 ;

作者机构: 1.Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan 430074, Hubei, Peoples R China

2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

3.Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA

4.Agr & Agri Food Canada, Cereal Res Ctr, Winnipeg, MB R3T 2M9, Canada

5.Sichuan Acad Agr Sci, Inst Plant Protect, Chengdu 610066, Sichuan, Peoples R China

6.Univ Haifa, Inst Evolut, IL-31905 Haifa, Israel

7.Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan 430071, Hubei, Peoples R China

8.Colorado State Univ, Dept Soil & Crop Sci, Ft Collins, CO 80523 USA

关键词: T. durum;landrace;cultivars;molecular marker;SNP;genetic structure

期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:5.923; 五年影响因子:6.132 )

ISSN: 1422-0067

年卷期: 2013 年 14 卷 4 期

页码:

收录情况: SCI

摘要: Evaluation of genetic diversity and genetic structure in crops has important implications for plant breeding programs and the conservation of genetic resources. Newly developed single nucleotide polymorphism (SNP) markers are effective in detecting genetic diversity. In the present study, a worldwide durum wheat collection consisting of 150 accessions was used. Genetic diversity and genetic structure were investigated using 946 polymorphic SNP markers covering the whole genome of tetraploid wheat. Genetic structure was greatly impacted by multiple factors, such as environmental conditions, breeding methods reflected by release periods of varieties, and gene flows via human activities. A loss of genetic diversity was observed from landraces and old cultivars to the modern cultivars released during periods of the Early Green Revolution, but an increase in cultivars released during the Post Green Revolution. Furthermore, a comparative analysis of genetic diversity among the 10 mega ecogeographical regions indicated that South America, North America, and Europe possessed the richest genetic variability, while the Middle East showed moderate levels of genetic diversity.

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