Abstract
ABSTRACT: Genetic variations of Abies koreana and Abies nephrolepis were assessed using two mitochondrialDNA regions (nad5 intron 4 and nad5 intron 1) for 16 natural populations to understand their phylogeograph-ical history. Seven polymorphic sites of the two combined regions resulted in the resolution of four haplotypes(M1−M4). The average gene diversity within the population (H S ) was 0.098, the total gene diversity (H T ) was0.620, and the interpopulation differentiation was G ST = 0.841, N ST = 0.849. The populations were divided intothree groups (northern area, central area, southern area) according to their geographic locations. The popu-lations of the northern and southern areas were mostly fixed for M1 and M2, respectively. The populations ofthe central area showed the highest levels of gene diversity (H T = 0.654) due to introgression from the north-ern area and southern area. The presence of a single mtDNA haplotype in the southern area suggests that cur-rent widespread populations have expanded to the central area from a specific refugium population after thelast glacial period.
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