한국산림과학회지 (Journal of Korean Society of Forest Science)

한국산림과학회 (Korean Society of Forest Science)
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오대산 물황철나무(Populus koreana) 집단의 유전다양성 및 공간적 유전구조 분석

Genetic Diversity and Spatial Genetic Structure of Populus koreana Population in Mt. Odae, Korea

  • 신수경 (국립산림과학원 산림유전자원과) ;
  • 송정호 (국립산림과학원 특용자원연구과) ;
  • 임효인 (국립산림과학원 산림유전자원과) ;
  • 장경환 (국립산림과학원 산림유전자원과) ;
  • 홍경낙 (국립산림과학원 산림유전자원과) ;
  • 이제완 (국립산림과학원 산림유전자원과)
  • Shin, Sookyung (Division of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Song, Jeong-Ho (Division of Special-purpose Trees, Korea Forest Research Institute) ;
  • Lim, Hyo-In (Division of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Jang, Kyung-Hwan (Division of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Hong, Kyung-Nak (Division of Forest Genetic Resources, Korea Forest Research Institute) ;
  • Lee, Jei-Wan (Division of Forest Genetic Resources, Korea Forest Research Institute)
  • 투고 : 2013.10.08
  • 심사 : 2014.03.14
  • 발행 : 2014.03.31
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초록

본 연구에서는 물황철나무(Populus koreana Rehder) 집단을 대상으로 I-SSR 표지자를 이용해 유전다양성과 유전적 공간구조를 분석하였다. 물황철나무는 중국, 러시아 극동지역과 북한의 고산 계곡부 등에 서식하는 낙엽활엽 교목이다. 물황철나무는 남한에서 강원도 일대에 제한적으로 분포한다. 특히 오대산 집단은 물황철나무의 남방한계지로서 유전자원보존의 중요성이 강조된다. 8개의 I-SSR primer로 유전다양성을 추정한 결과, Shannon의 다양성 지수(I)는 0.230, 이형접합도의 기대치(He)는 0.151로 유사한 생활사를 갖는 타 수종에 비해 유전다양성이 매우 낮게 나타났다. 유전적 군락을 확인하기 위해 공간적 자기상관성 분석을 수행한 결과, 조사 지역 내의 물황철나무 집단은 400 m 이내에서 유전적으로 유사한 군락구조를 갖고 있는 것으로 나타났다. 물황철나무 집단의 현지외 유전자 보존을 위한 표본추출 시, 개체 간 거리를 400 m 이상으로 두는 것이 효율적일 것으로 판단된다.

This study describes analysis of genetic diversity and spatial genetic structure of Korean poplar (Populus koreana Rehder) in Mt. Odae using I-SSR markers. P. koreana is a deciduous broad-leaved tree species that primarily grows in the alpine valleys of China, Russia and North Korea. In South Korea, P. koreana is found limitedly in Gangwon province. Especially, the population in Mt. Odae is located on the southern limit line, its importance is emphasized from the genetic resource conservation perspective. The Shannon's diversity (I=0.230) and the expected heterozygosity (He=0.151) were relatively low as compared with those of other plant species. Spatial autocorrelation analysis using Tanimoto's distance showed that the genetic patch was founded within 400 m. It is suggested that individual trees for ex situ conservation should be sampled with a minimum distance of 400 m between trees.

키워드

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