The effect of geographic range and dichogamy on genetic variability and population genetic structure in Tricyrtis section Flavae (Liliaceae)

Masayuki Maki, Hiroko Morita, Syuji Oiki, Hiroshi Takahashi

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Populations of each of the four species of Tricyrtis sect. Flavae were sampled using enzyme electrophoresis to examine the effect of geographic range and dichogamy on the genetic diversity of the species. The most widespread species, T. nana, had the lowest level of genetic diversity at both the population and the species level. The depauperate genetic diversity at the population level of T. nana appears to result from the high self-fertilization of the species. The low genetic diversity at the species level of T. nana probably resulted from the bottleneck effect during the speciation process in which this species diverged from the progenitor species, T. flava. Genetic differentiation among populations was high in both adichogamous T. nana and protandrous T. flava. High self-fertilization in T. nana and the colonizing nature of T. flava are likely the main factors causing the differentiated population genetic structure. In contrast to a previous study on chloroplast DNA (cpDNA) variation in Tricyrtis sect. Flavae, T. nana was most closely related to T. flava, which corresponds to the morphological resemblance of both species.

Original languageEnglish
Pages (from-to)287-292
Number of pages6
JournalAmerican Journal of Botany
Volume86
Issue number2
DOIs
Publication statusPublished - 1999

Keywords

  • Allozyme
  • Dichogamy
  • Genetic diversity
  • Geographic range
  • Liliaceae
  • Population genetic structure
  • Tricyrtis sect. Flavae

ASJC Scopus subject areas

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

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