Abstract
The genetic diversity and the genetic relationship among 30 genetic resources of T. officinale and T. coreanum collected from 20 regions in Korea were evaluated by using ISSR markers. Out of 127 loci detected overall, 122 were identified to be polymorphic with a rate of 96.0% at the 30 individuals. The intraspecific polymorphism between T. officinale and T. coreanum was 92.6% and 88.2%, respectively. The genetic similarity matrix (GSM) revealed a wide range of variablility among the 30 accessions, spanning from 0.179 to 922. According to the clustering analysis, different species T. officinale and T. coreanum, were divided into independent groups and all of the accessions could be classified into 7 categories. Especially, all of the mountain collected accessions belonged to independent groups. The study findings indicate that T. officinale and T. coreanum accessions have a high genetic diversity and accordingly carry a germ-plasm qualifying as good genetic resources for breeding.
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