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The botanical magazine = Shokubutsu-gaku-zasshi

, Volume 95, Issue 3, pp 295–302 | Cite as

Taxonomic studies ofAsarum sensu lato

II. Karyotype and C-banding pattern in two species ofHexastylis andAsarum epigynum
  • Takashi Sugawara
Article

Abstract

The karyotype and the C-banding pattern in two species ofHexastylis andAsarum epigynum were analysed in detail, and the results obtained were compared with those of the other species ofAsarum, Asiasarum andHeterotropa previously reported.

The present results were partially different from the previous reports related to the karyotypes of these species. The karyotype observed in two species ofHexastylis (2n=26) was represented by ten pairs of metacentric chromosomes and three pairs of small subtelocentric chromosomes, which is very similar to that ofAsiasarum in eastern Asia. The C-banding patterns ofHexastylis andAsiasarum, however, were clearly different from each other. A striking difference was found in one of the three pairs of small subtelocentric chromosomes. A Formosan speciesAsarum epigynum had the somatic chromosome number 2n=12 and a highly asymmetrical karyotype composed of mainly subtelocentric chromosomes. These karyological features were remarkably different from those of the other groups inAsarum s.l.

Key words

Asarum epigynum C-banding pattern Cytotaxonomy Hexastylis Karyotype 

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References

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Copyright information

© The Botanical Society of Japan 1982

Authors and Affiliations

  • Takashi Sugawara
    • 1
  1. 1.Makino Herbarium, Faculty of ScienceTokyo Metropolitan UniversityTokyo

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