Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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A Preliminary Population Genetic Study of an Overlooked Endemic ash, Fraxinus chiisanensis in Korea Using Allozyme Variation

  • Lee, Heung Soo (Department of Forest Sciences and The Arboretum, Seoul National University) ;
  • Chang, Chin-Sung (Department of Forest Sciences and The Arboretum, Seoul National University) ;
  • Kim, Hui (Department of Medicinal Plants Resources, Mokpo National University) ;
  • Choi, Do Yeol (Department of Forest Sciences and The Arboretum, Seoul National University)
  • Received : 2009.02.19
  • Accepted : 2009.10.09
  • Published : 2009.10.30
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Abstract

We used enzyme electrophoresis to evaluate genetic diversity in five populations of endemic ash, Fraxinus chiisanensis in Korea. Of 15 putative allozyme loci examined 26.7% were polymorphic and expected heterozygosity for the species was low (0.082). Within the range, population were highly differentiated ($F_{ST}$=0.356) and little genetic variation was explained by geography. The pattern of distribution of variation showed low genetic variation within populations and pronounced divergence among populations, which was consistent with the prediction for the effects of limited gene flow and local genetic erosion. Although the frequencies of male plants were dominant ranging from 79.3% to 89.4%, most mating events seems to be inevitable mating between relatives in small populations based on heterozygote deficiency of this species. Small effective population size and the limited dispersal contributed to the low rates of gene flow within as well as between populations.

Keywords

Acknowledgement

Supported by : Korea Forest Service

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