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Microsatellite analysis of genetic relationships between wild and cultivated melons in Northwest and Central China

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Abstract

The genetic relationships between the wild and cultivated melon accessions from Northwest and Central China were dissected using 22 microsatellite markers. A total of 153 alleles, a high level of expected heterozygosity (0.669), and a low observed heterozygosity (0.156) were detected in the total panel. Differences on the allelic composition and heterozygosity levels were found between the two accession types and the wild accessions revealed a higher level of genetic diversity. The UPGMA analysis of the total panel showed that (a) most wild accessions from Northwest China were clustered independently from the cultivated accessions, and (b) the wild and cultivated accessions from Central China presented a high genetic closeness and showed a divergence from those of Northwest China. Similar positioning of the most accessions was observed with the principal coordinate analysis and STRUCTURE analysis. Pairwise FST and Nei’s genetic distance quantified the genetic differentiation among the different accession types and further verified our findings. We concluded that the wild melons from Northwest China have a distinctive genetic background and could be the true wild forms, while the wild melons from Central China showed a close relationship to the local cultivars and could be a return from the cultivated melons in the same region. Our results offer an insight into the genetic resources of the main melon producing regions in China, which is essential for maximizing utilization of the traits of interest in wild melons.

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Acknowledgments

We thank Dr. Daoyu Zhu at Massey University for his critical review of this manuscript. This work was supported by the National Natural Science Foundation of China (No. 31101544).

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Authors and Affiliations

  1. College of Horticulture, Henan Agricultural University, 63 Nongye Road, Zhengzhou, 450002, People’s Republic of China

    Jianbin Hu, Panqiao Wang, Qiong Li & Yan Su

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  1. Jianbin Hu
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  2. Panqiao Wang
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  3. Qiong Li
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  4. Yan Su
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Correspondence to Jianbin Hu.

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Hu, J., Wang, P., Li, Q. et al. Microsatellite analysis of genetic relationships between wild and cultivated melons in Northwest and Central China. Mol Biol Rep 41, 7723–7728 (2014). https://doi.org/10.1007/s11033-014-3668-6

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  • DOI: https://doi.org/10.1007/s11033-014-3668-6

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