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Genetic Variation and Population Structure in Korean Endemic Species: V. Corylopsis coreana (Hamameliaceae)

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The allozyme diversity of ten Korean populations of Corylopsis coreana Nakai, a shrub endemic to Korea, were examined. Although Korean populations are isolated, they maintain moderate levels of allozyme variation (average percent of loci polymorphic=22.4%, mean number of alleles per polymorphic locus=3.97, mean expected heterozygosity=0.109) compared to the means of 26 woody endemic species. A high level of heterozygote deficiency was observed in populations of C. coreana (mean FIS=0.232). Significant heterogeneity in allele frequencies were detected between populations at all polymorphic loci (p<0.001), among-population genetic differentiation accounted for 12.3% of the total variation. Indirect estimates of the number of migrants per generation (Nm) (1.77, calculated from GST) indicate that gene flow is moderate among populations of C. coreana. The allozyme diversity and population structure in C. coreana may be attributed to relatively long-distance flight of pollinators in early spring, gravity seed dispersal, restricted distribution, and high density in the standing populations of the species.


Document Type: Research Article


Affiliations: Department of Biology, Gyeongsang National University, Chinju 660-701, The Republic of Korea

Publication date: 2000-11-16

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