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Genetic Diversity and Phenetic Relationships of Genus Oxalis in Korea Using Random Amplified Polymorphic DNA (RAPD) Markers

RAPD마크를 이용한 한국 내 괭이밥속 식물의 유전적 다양성과 표현형 관계

  • Received : 2014.03.19
  • Accepted : 2014.07.16
  • Published : 2014.07.30

Abstract

We evaluated the phenetic relationships within six taxa of genus Oxalis L. in Korea with random amplified polymorphic DNA (RAPD) markers. Ten primers produced 125 bands for six taxa, and the mean number of bands per primer was 12.5. Across the six taxa, 121 (96.8%) bands were polymorphic, and only four were monomorphic. The mean number of RAPD phenotypes across the six taxa varied from 3.6 (O. stricta and O. corymbosa) to 4.8 (O. corniculata for. rubrifolia). In a simple measure of intraspecies variability according to the percentage of polymorphic bands, O. stricta and O. corymbosa exhibited the lowest variation (28.8%), and O. corniculata for. rubrifolia showed the highest (38.4%). A mean of 32.7% of the loci was polymorphic within taxa. The total interspecies genetic diversity ($H_T$) and intraspecies genetic diversity ($H_S$) was 0.362 and 0.122, respectively. On a per-locus basis, the proportion of total genetic variation due to differences among species ($G_{ST}$) was 0.663. This indicates that about 66.3% of the total variation was among species. The node of O. stricta and O. corniculata for. rubrifolia was strongly supported, with a high bootstrap value in the NJ tree and sistered with O. corniculata. According to RAPD analysis, the number of chromosomes was not congruent with a phenetic relationship.

Keywords

Genetic diversity;genus Oxalis;phenetic relationships;polymorphic;random amplified polymorphic DNA (RAPD)

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