Journal of Plant Research

, Volume 109, Issue 2, pp 161–168

Genetic and clonal diversity in Korean populations ofVitex rotundifolia (Verbenaceae)

  • Yeehn Yeeh
  • Soon Suk Kang
  • Hye Gi Chung
  • Mun Su Chung
  • Myong Gi Chung
Original Articles

Abstract

Vitex rotundifolia L.f. is a woody perennial and has sexual and asexual modes of reproduction. Allozyme study was conducted on 550 plants in 13 Korean populations. The levels of genetic variability and divergence within and among populations, respectively, are considerably lower and higher than the mean values for woody plants with similar life history tralts. Mean percentage of polymorphic loci (PP), mean number of alleles per locus (AP), and mean genetic diversity (HeP) within populations ofV. rotundifolia were: 16.7%, 1.21, and 0.047. On average, about 79% of the total variation inV. rotundifolia was common to all populations (meanGST=0.208). In addition, significant differences in allele frequencies among populations were found in all polymorphic loci examined (P<0.001). On the other hand, levels of genotypic diversity within and among populations were moderate. About 44% (18/41) of multilocus genotypes were “local genotypes” (genotypes occurring in only one population), whereas only one “widespread genotype” (genotypes occurring in more than 75% of the populations) were detected. The mean number of multilocus genotypes per population (G) and mean genotypic diversity index (DG) were 8.4 and 0.74, respectively. Most common multilocus genotypes found in populations were homozygous for five polymorphic loci. The abundance of ramets of these genets is responsible for the low levels of expected heterozygosity within populations. The results indicate that clonal reproduction may act as an enhancer of genetic drift by reducing effective size of local populations ofV. rotundifolia.

Key words

Clonal diversity Genetic drift Genetic variation Vitex rotundifolia 

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Copyright information

© The Botanical Society of Japan 1996

Authors and Affiliations

  • Yeehn Yeeh
    • 1
  • Soon Suk Kang
    • 2
  • Hye Gi Chung
    • 3
  • Mun Su Chung
    • 4
  • Myong Gi Chung
    • 2
  1. 1.Institute of Basic SciencesInje UniversityKimhaeThe Republic of Korea
  2. 2.Department of BiologyGyeongsang National UniversityChinjuThe Republic of Korea
  3. 3.Department of Landscape ArchitectureSung Kyun Kwan UniversitySuwonThe Republic of Korea
  4. 4.Department of HorticultureChinju National UniversityChinjuThe Republic of Korea

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