Int. J. Mol. Sci. 2013, 14(4), 7061-7088; doi:10.3390/ijms14047061
Article

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

Received: 1 February 2013; in revised form: 23 February 2013 / Accepted: 1 March 2013 / Published: 28 March 2013
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 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.
Keywords: T. durum; landrace; cultivars; molecular marker; SNP; genetic structure
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MDPI and ACS Style

Ren, J.; Sun, D.; Chen, L.; You, F.M.; Wang, J.; Peng, Y.; Nevo, E.; Sun, D.; Luo, M.-C.; Peng, J. Genetic Diversity Revealed by Single Nucleotide Polymorphism Markers in a Worldwide Germplasm Collection of Durum Wheat. Int. J. Mol. Sci. 2013, 14, 7061-7088.

AMA Style

Ren J, Sun D, Chen L, You FM, Wang J, Peng Y, Nevo E, Sun D, Luo M-C, Peng J. Genetic Diversity Revealed by Single Nucleotide Polymorphism Markers in a Worldwide Germplasm Collection of Durum Wheat. International Journal of Molecular Sciences. 2013; 14(4):7061-7088.

Chicago/Turabian Style

Ren, Jing; Sun, Daokun; Chen, Liang; You, Frank M.; Wang, Jirui; Peng, Yunliang; Nevo, Eviatar; Sun, Dongfa; Luo, Ming-Cheng; Peng, Junhua. 2013. "Genetic Diversity Revealed by Single Nucleotide Polymorphism Markers in a Worldwide Germplasm Collection of Durum Wheat." Int. J. Mol. Sci. 14, no. 4: 7061-7088.

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