Genetic diversity and hierarchical population structure of a rare autotetraploid plant, Aster kantoensis (Asteraceae)

Masayuki Maki, Michiko Masuda, Ken Inoue

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

We sampled 17 populations of a rare autotetraploid Aster kantoensis (Asteraceae) from three river systems located in central Japan, and studied them for allelic variation at 22 enzyme loci. There was no significant correlation between the actual population size and three genetic diversity parameters, suggesting that the effective population size was very small even for the large populations, i.e., even large populations may still have a high probability of being of recent origin and remain influenced by the founder effect. Compared to other autotetraploid species, the total genetic variation of A. kantoensis is small. The number of alleles and gene diversity of a population were not significantly different among the river systems, although the percentage of polymorphic loci was different. Genetic differentiation among river systems was larger than between populations within the river systems, thereby indicating that gene flow between river systems is small, especially between the Kinu River system and Tama or Sagami River systems.

Original languageEnglish
Pages (from-to)296-303
Number of pages8
JournalAmerican Journal of Botany
Volume83
Issue number3
DOIs
Publication statusPublished - 1996 Mar
Externally publishedYes

Keywords

  • Aster kantoensis
  • Asteraceae
  • Autotetraploid
  • Genetic diversity
  • Hierarchial
  • Japan
  • Population structure
  • Rare plant

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Genetics
  • Plant Science

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