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Analysis of genetic diversity and population structure of peanut cultivars and breeding lines from China, India and the US using simple sequence repeat markers

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Relation http://oar.icrisat.org/9700/
http://dx.doi.org/10.1111/jipb.12380
10.1111/jipb.12380
 
Title Analysis of genetic diversity and population structure of peanut cultivars and breeding lines from China, India and the US using simple sequence repeat markers
 
Creator Wang, H
Khera, P
Huang, B E
Yuan, M
Katam, R
Zhuang, W
Harris-Shultz, K
Moore, K M
Culbreath, A K
Zhang, X
Varshney, R K
Xie, L
Guo, B
 
Subject Plant Breeding
Groundnut
Genetics and Genomics
 
Description Cultivated peanut is grown worldwide as rich-source of oil and protein. A broad genetic base is needed for cultivar improvement. The objectives of this study were to develop highly informative simple sequence repeat (SSR) markers and to assess the genetic diversity and population structure of peanut cultivars and breeding lines from different breeding programs in China, India and the US. A total of 111 SSR markers were selected for this study, resulting in a total of 472 alleles. The mean values of gene diversity and polymorphic information content (PIC) were 0.480 and 0.429, respectively. Country-wise analysis revealed that alleles per locus in three countries were similar. The mean gene diversity in the US, China and India was 0.363, 0.489 and 0.47 with an average PIC of 0.323, 0.43 and 0.412, respectively. Genetic analysis using the STRUCTURE divided these peanut lines into two populations (P1, P2), which was consistent with the dendrogram based on genetic distance (G1, G2) and the clustering of principal component analysis. The groupings were related to peanut market types and the geographic origin with a few admixtures. The results could be used by breeding programs to assess the genetic diversity of breeding materials to broaden the genetic base and for molecular genetics studies.
 
Publisher John Wiley & Sons
 
Date 2016
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/9700/1/wang2015.pdf
Wang, H and Khera, P and Huang, B E and Yuan, M and Katam, R and Zhuang, W and Harris-Shultz, K and Moore, K M and Culbreath, A K and Zhang, X and Varshney, R K and Xie, L and Guo, B (2016) Analysis of genetic diversity and population structure of peanut cultivars and breeding lines from China, India and the US using simple sequence repeat markers. Journal of Integrative Plant Biology, 58 (5). pp. 452-465. ISSN 16729072