Abstract:
Rhus trichocarpa MIQ. (Anacardiaceae) is a dioecious, insect-pollinated tree. It has a wide distribution in East Asia, from Japan, China and Korea, north to Sakhalin. In these regions, R. trichocarpa is a pioneer tree that, once established, creates conditions favorable for subsequent successional tree species, by providing attractive perching for various bird species, which then drop seed of the later successional species. Later species form pine-oak forests which overgrow R. trichocarpa. We used allozyme loci and spatial autocorrelation statistics to examine the spatial distribution of allozyme polymorphisms of individuals in two Korean populations. Populations of the species maintain moderate levels of allozyme variation (mean H-e = 0.173, G(ST) = 0.064). It was found that genetic patch width was at least 25 m, and this was created by limits to seed or pollen dispersal.

Author Keywords:
allozymes, Rhus trichocarpa, spatial autocorrelation, spatial genetic structure

KeyWords Plus:
SUBDIVIDED POPULATIONS, AUTO-CORRELATION, DIVERSITY

Addresses:
Chung MG, Gyeongsang Natl Univ, Dept Biol, Chinju 660701, South Korea
Gyeongsang Natl Univ, Dept Biol, Chinju 660701, South Korea

Publisher:
SAUERLANDERS VERLAG, FRANKFURT