Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Genetic Diversity and Population Structure of Liriope platyphylla (Liliaceae) in Korea

한국내 맥문동의 유전적 다양성과 집단 구조

  • Huh, Hong-Wook (Department of Biology Education, Busan National University) ;
  • Choi, Joo-Soo (Department of Molecular Biology, Dongeui University) ;
  • Lee, Bok-Kyu (Department of Molecular Biology, Dongeui University) ;
  • Huh, Man-Kyu (Department of Molecular Biology, Dongeui University)
  • 허홍욱 (부산대학교 생물교육과) ;
  • 최주수 (동의대학교 분자생물학과) ;
  • 이복규 (동의대학교 분자생물학과) ;
  • 허만규 (동의대학교 분자생물학과)
  • Published : 2007.03.30
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Abstract

Genetic diversity and population structure of eleven Liriope platyphylla (Liliaceae) populations in Korea were determined using genetic variation at 20 allozyme loci. The percent of polymorphic loci within the enzymes was 55.9%. Genetic diversity at the species level and at the population level was high(Hes = 0.178; Hep = 0.168, respectively), whereas the extent of the population divergence was relatively low ($G_{ST}$ = 0.064). $F_{IS}$, a measure of the deviation from random mating within the 11 populations, was 0.311. Total genetic diversity values ($H_T$) varied between 0.0 and 0.535, giving an average over all polymorphic loci of 0.323. The interlocus variation in within population genetic diversity ($H_S$) was high (0.305). An indirect estimate of the number of migrants per generation (Nm = 3.66) indicates that gene flow is high among Korean populations of the species. In addition, analysis of fixation indices revealed a substantial heterozygosity deficiency in some populations and at some loci. Mean genetic identity between populations was 0.988. It is highly probable that directional toward genetic uniformity in a relatively the homogenous habitat is thought to be operated among Korean populations of L. platyphylla.

한국내 분포하는 맥문동(Liriope platyphylla) 11집단에 대한 20 알로자임 대립유전자좌위에서 유전적 다양성과 집단구조를 조사하였다. 효소내 다형성을 나타내는 빈도는 55.9%였다. 종과 집단 수준에서 유전적 다양도는 각각 0.178, 0.168로 높았으며, 집단간 분화 정도는 낮았다($G_{ST}$ = 0.064). 전체 11 집단에서 임의교배에 의한 편차는 0.311이였다. 전체 유전적 다양성는 $0{\sim}0.535$였다. 유전적 다양도 중 집단내 변이는 높았다($H_S$ = 0.305). 세대간 이주하는 개체수는 약 3.66으로 이 종의 한국내 집단간 유전자 흐름이 높음을 시사한다. 또한 라이트의 고정지수 분석 결과 많은 대립유전자좌위와 집단에서 이형접합자의 결핍이 존재하고 있었다. 집단간 유전적 동질성은 0.988이였다. 이는 맥문동의 분포지가 한국내 유사한 환경에 놓여 있고 집단이 방향적 동질성을 가지고 있음을 시사한다.

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