RAPD variation in wild, weedy and cultivated azuki beans in Asia

Makiko Mimura, Kentaro Yasuda, Hirofumi Yamaguchi

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

RAPD (Random Amplified Polymorphic DNA) variation was assessed in 42 accessions of azuki bean (Vigna angularis) including wild, weedy and cultivated races and in three accessions of two related species used as outgroups. A much lower level of genetic variation was observed in cultivated and weedy azuki beans compared to wild azuki bean. Wild azuki bean (V. angularis var. nipponensis) has relatively high genetic variation in subtropical highlands of Asia compared to the Far East. Although cultivated azuki bean has low RAPD variation, accessions from subtropical highlands and Southeast Asia showed different RAPD features compared to those of the Far East. It is hypothesized that the cultivated azuki bean has been derived from wild azuki bean in the Far East; the high variation in wild azuki bean has been created through its natural dissemination; and the relatively low variation in cultivated azuki bean has come about through human dissemination after genetic bottleneck reduced by domestication. In addition, high genetic diversity in wild azuki bean in subtropical highlands of Asia is regarded as an important genetic resource in azuki improvement.

Original languageEnglish
Pages (from-to)603-610
Number of pages8
JournalGenetic Resources and Crop Evolution
Volume47
Issue number6
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

Keywords

  • Azuki bean
  • Domestication
  • RAPD
  • Wild ancestor

ASJC Scopus subject areas

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

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