ALLOZYME VARIATION AND POPULATION-STRUCTURE OF PYROLA-JAPONICA IN KOREA

Enzyme electrophoresis was used to estimate genetic diversity and popu lation structure of Pyrola japonica KLENZE in Korea. The percent of po lymorphic loci within the enzymes was 58.8%. Genetic diversity at both the species level and at the population level was high (Hes = 0.226; Hep = 0.179, respectively) whereas the extent of the population diverg ence was relatively low (G(ST) = 0.143). F-IS, a measure of the deviat ion from random mating within the 14 populations, was 0.184. An indire ct estimate of the number of migrants per generation (Nm = 1.50) indic ates that gene flow is moderate among Korean populations of the specie s. In addition, analysis of fixation indices revealed a substantial he terozygosity deficiency in some populations and at some loci. This ind icates that some populations sampled may have been substructured large ly due to rhizotamous spread and restricted gene flow coupled with fou nder effects and genetic drift.