생명과학회지 (Journal of Life Science)

  • 제14권2호
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  • Pages.345-350
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  • 2004
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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한국내 물오리나무(Ainus hirsuta) 집단의 공간적 상관관계

Spatial Autocorrelation within a Korean Population of Alnus hirsuta

  • 발행 : 2004.04.01
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초록

한국내 물오리나무(Ainus hirsuta) 집단의 미소지리적 변이를 공간적 상관관계에 적용하였다. 분리된 등급간 대립유전자의 각 형태의 산출을 정규분포 편차 통계에서 임의분포를 하고 있는지를 검정하였다. 모든 경우에서 예상 값이 유의성을 가지는지 Moran의 I값으로 추정한 결과 120 경우 준 24 경우(20.0%)에서 유의성을 나타내었다. 이들 값 중에서 17 경우는 음의 값을 나타내었는데 이는 한국의 물오리집단이 10등급 간격에서 유사하지 않다는 점을 시사하였다. 그 한 원인으로는 화목(火木)을 위한 인간의 간섭을 추정할 수 있다. 열매를 맺는 가지나 줄기의 간헐적인 벌목에 의해 유전자 유동이 조장되었기 때문일 것이다. 한편, 그루터기나 밑둥으로부터 영양번식을 할 수 있는 능력 또한 유전적 구조를 어지럽히는 한 요인으로 작용한 것으로 사료된다.

The present study was investigated microgeographic variations to spatial autocorrelation in the Korean alder, Alnus hirsuta. Separate counts of each type of join (combination of genotypes at a single locus) for each allele, and for each distance class of separation, were tested for significant deviation from random expectations by calculating the Standard Normal Deviation (SND). Moran's I was significantly different from the expected value in 24 of 120 cases (20.0%). 17 of these values (14.2%) were significantly negative, indicating genetic dissimilarity among pairs of individuals in the ten distance classes. Many Korean populations of alder are small and are distributed by men for firewood. This occasional cutting of seed-bearing stems may bring a high level of gene flow. In addition, stump sprouting ability also may contribute to the fact that the Chengkwang population at Gijang is unusual in lacking spatial genetic structure.

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