Cytogeography of <i>Taraxacum venustum</i> and <i>T. shikotanense</i> (Asteraceae) in Japan

• Sato Kyoko

  Department of Biology, Faculty of Science, University of Toyama

• Yamazaki Takahiro

  Toyama Daiichi High School

• Iwatsubo Yoshikane

  Department of Biology, Faculty of Science, University of Toyama

Abstract

We report on polyploidy, karyotypes, and cytogeographical distribution of two species of native agamospermous Taraxacum in Japan. Taraxacum venustum had two polyploid numbers of 2n=3x=24 and 2n=4x=32. Four karyotypes were found in tetraploid plants. In T. shikotanense, there were seven chromosome numbers: 2n=47 (hypohexaploid), 48 (hexaploid), 56 (heptaploid), 64 (octoploid), 72 (nonaploid), 80 (decaploid), and 88 (undecaploid). Our study reveals that some races in both T. venustum and T. shikotanense can be differentiated according to their polyploidy and karyotypes.

Journal

• CYTOLOGIA

  CYTOLOGIA 85 (3), 223-231, 2020-09-25

  Japan Mendel Society, International Society of Cytology

Keywords

• Allopolyploidy
• Asteraceae
• Chromosome number
• Karyotype
• <i>Taraxacum shikotanense, Taraxacum venustum</i>

Details

• CRID: 1390285697598750208
• NII Article ID: 130007907407
• DOI: 10.1508/cytologia.85.223
• ISSN: 13487019
• ISSN: 00114545
• Web Site: https://www.jstage.jst.go.jp/article/cytologia/85/3/85_D-20-00016/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed