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Genetic diversity and its implications in the conservation of endangeredZostera japonica in Korea

한국식물학회지 2004년 47권 3호 p.275 ~ 275
 ( Lee Sun-Hwa ) - Soonchunhyang University Department of Biology

 ( Ma Sun-Mi ) - Soonchunhyang University Department of Biology
 ( Lim Yong-Seok ) - Soonchunhyang University Department of Biology
최홍근 ( Choi Hong-Keun ) - Ajou University Division of Natural Sciences
 ( Shin Hyun-Chur ) - Soonchunhyang University Department of Biology

Abstract


As part of the on-going effort to conserve endangeredZostera japonica Ascher. & Graebn. in Korea, we have used RAPD band patterns to analyze its genetic structure and diversity. Out of 50 primers tested, 45 formed amplified bands with its genome, including 814 polymorphic and 28 monomorphic bands. The highest number (120) was found in the population of Geoje-do; the smallest (58), in Anmyeon-do. An examination of its genetic structure with AMOVA revealed that about 50% of all variations could equally be assigned to within and between populations. The statistical value Gst (index of genetic differences) was 0.49, and the average number of individuals exchanged between populations per generation (N e m) was calculated as 0.26. Although the habitats ofZ. japonica in Korea are disappearing at an alarming rate, significant levels of genetic variation still exist, especially in the Geoje-do population. Therefore, any recovery strategy for this endangered species should be planned on the basis of this genetic diversity among populations.

키워드

AMOVA; endangered species; RAPD; seagrass; Zostera japonica
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