Abstract
Simple sequence repeats (SSRs) were used to assess genetic diversity and study genetic relatedness in a large collection of Malus germplasm. A total of 164 accessions from the Malus core collection, maintained at the University of Illinois, were genotyped using apple SSR markers. Each of the accessions was genotyped using a single robust SSR marker from each of the 17 different linkage groups in Malus. Data were subjected to principal component analysis, and a dendrogram was constructed to establish genetic relatedness. As expected, this diverse core collection showed high allelic diversity; moreover, this allelic diversity was higher than that previously reported. Cluster analysis revealed the presence of four distinct clusters of accessions in this collection.
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Acknowledgments
This research was supported by Pioneer Hi-Bred International, Inc., Illinois Plant Breeding Center, USDA-NIFA-SCRI grant AG 2009-51181-06023, University of Illinois Office of Research Project 875-325, and University of Illinois Office of Research Project 875-922.
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Potts, S.M., Han, Y., Khan, M.A. et al. Genetic Diversity and Characterization of a Core Collection of Malus Germplasm Using Simple Sequence Repeats (SSRs). Plant Mol Biol Rep 30, 827–837 (2012). https://doi.org/10.1007/s11105-011-0399-x
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DOI: https://doi.org/10.1007/s11105-011-0399-x