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

doi:10.1111/jipb.12380

J Integr Plant Biol. ›› 2016, Vol. 58 ›› Issue (5): 452-465.DOI: 10.1111/jipb.12380

• Cell and Developmental Biology • Previous Articles Next Articles

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

Hui Wang^1,2,3,4, Pawan Khera^2,5, Bingyan Huang⁶, Mei Yuan⁴, Ramesh Katam⁷, Weijian Zhuang⁸, Karen Harris-Shultz⁹, Kim M. Moore¹⁰, Albert K. Culbreath², Xinyou Zhang⁶, Rajeev K. Varshney⁵, Lianhui Xie^1* and Baozhu Guo^3*

¹Fujian Agricultural and Forestry University, College of Plant Protection, Fuzhou, China
²Department of Plant Pathology, University of Georgia, Tifton, GA, USA
³USDA-ARS, Crop Protection and Management Research Unit, Tifton, GA, USA
⁴Shandong Peanut Research Institute, Qingdao, China
⁵International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, India
⁶Henan Academy of Agricultural Sciences, Cash Crops Research Institute, Zhengzhou, China
⁷Department of Biological Sciences, Florida A&M University, Tallahassee, FL, USA
⁸Fujian Agricultural and Forestry University, College of Crop Science, Fuzhou, China
⁹USDA-ARS, Crop Genetics and Breeding Research Unit, Tifton, GA, USA
¹⁰AgResearch Consultants, Sumner, GA, USA

Received:2015-05-25 Accepted:2015-07-13 Published:2015-07-15
About author:^**Correspondences: (Guo is fully responsible for distributions of all materials associated with this article) E-mail: fjxlh@126.com; baozhu.guo@ars.usda.gov

Abstract

Abstract:

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.

Key words: Arachis hypogaea, breeding, genetic diversity, population structure, simple sequence repeat

Hui Wang, Pawan Khera, Bingyan Huang, Mei Yuan, Ramesh Katam, Weijian Zhuang, Karen Harris-Shultz, , Kim M. Moore, Albert K. Culbreath, Xinyou Zhang, Rajeev K. Varshney, Lianhui Xie, and Baozhu Guo. Analysis of genetic diversity and population structure of peanut cultivars and breeding lines from China, India and the US using simple sequence repeat markers[J]. J Integr Plant Biol., 2016, 58(5): 452-465.

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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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