Patterns of Allozyme Variation in Relation to Population Size of the Threatened Plant Megaleranthis saniculifolia (Ranunculaceae) in Korea
2005
Chang, C.S. (Seoul National University, Seoul, Republic of Korea) | Choi, D.Y. (Seoul National University, Seoul, Republic of Korea) | Kim, H. (Mokpo National University, Muan, Republic of Korea), E-mail: [email protected] | Park, T.Y. (Yonsei University, Seoul, Republic of Korea) | Kim, Y.S. (Yeungnam University, Gyeongsan, Republic of Korea)
Patterns of variation at 27 allozyme loci were investigated in the endangered endemic plant Megaleranthis saniculifolia. Levels of allozyme variation (A=1.47, P=40%, He=0.088) were also compared with other endemic plant species. Genetic divergence between populations was very high (C∧ST=0.271), with moderate to high interpopulation differentiation, which probably arose through historical bottlenecks in a landscape of habitat fragmentation and/or human influence. The percentage of polymorphic loci, heterozygosity, and mean number of alleles per locus were positively related to population size, probably due to the stochastic loss of rare alleles in the smaller populations.
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