植物分类学报

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假橐吾属(菊科:千里光族)的核形态研究

刘建全,刘尚武   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2000-01-10 发布日期:2000-01-10
  • 通讯作者: 刘建全

Karyomorphology of Ligulariopsis Y. L. Chen (Asteraceae: Senecioneae)

LIU Jian-Quan, LIU Shang-Wu   

  • Received:1900-01-01 Revised:1900-01-01 Online:2000-01-10 Published:2000-01-10
  • Contact: LIU Jian-Quan<

Abstract: Investigated in the present work was the karyomorphology of Ligulariopsis Y. L. Chen. The interphase nuclei were categorized to be the complex chromocenter type, and the mitotic prophase chromosomes were categorized to be the interstitial type. The metaphase chromosomes ranged from 2.70 μm to 4.70μm with the average 3.62 μm in length. The karyotype was formulat- ed as 2n = 58 = 34m + 18sm(2sat) + 6st and belonged to 2A type. The karyomorphological charac- teristics of Ligulariopsis are very similar to those of Ligularia and Parasenecio, but there are moresubmedian-centromeric and median-centromeric chromosomes in Ligulariopsis.

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