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Genetic Variation of Parental Inbred Lines for Korean Waxy Corn Hybrid Varieties revealed by SSR markers  

Park, Jun-Sung (Division of Bio-resources Technology, College of Agriculture and Life Sciences, Kangwon National University)
Sa, Kyu-Jin (Division of Bio-resources Technology, College of Agriculture and Life Sciences, Kangwon National University)
Park, Ki Jin (Maize Experiment Station, Kangwon Agricultural Research and Extension Services)
Jang, Jin-Sun (Maize Experiment Station, Kangwon Agricultural Research and Extension Services)
Lee, Ju Kyong (Division of Bio-resources Technology, College of Agriculture and Life Sciences, Kangwon National University)
Publication Information
Korean Journal of Breeding Science / v.41, no.2, 2009 , pp. 106-114 More about this Journal
Abstract
In maize, knowledge of genetic diversity and genetic relationships among elite inbred lines is an significant impact on the selection of parental lines for hybrid varieties. Genetic diversity and genetic relationships among 11 parental inbred lines of Korean waxy and normal corn varieties were analyzed using 50 SSR markers distributed over the whole genome. A total of 171 allele bands were detected with an average of 3.4 alleles per locus. Number of allele bands per locus ranged from two to six and gene diversity varied from 0.165 to 0.900 with an average of 0.596 depending on the SSR loci. The cluster tree recognized three major groups with 61.6% genetic similarity. Group I includes 7 inbred lines (KL103, HW1, HW4, HW6, HW7, HW8, HW9), with similarity coefficients of between 0.616 and 0.730. Group II includes 2 inbred lines (HF1, HF2), with similarity coefficients of 0.959. Group III includes 2 inbred lines (HW3, HW5), with similarity coefficients of 0.713. The present study indicates that the SSR markers chosen for this analysis are effective for the assessment of genetic diversity and genetic relationships among 11 parental inbred lines.
Keywords
Maize; inbred line; variety protection; SSR marker; genetic diversity;
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