J Syst Evol ›› 2000, Vol. 38 ›› Issue (1): 60-63.

• Research Articles • Previous Articles     Next Articles

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

LIU Jian-Quan, LIU Shang-Wu   

  • Published:2000-01-10

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 formulated as 2n = 58 = 34m + 18sm(2sat) + 6st and belonged to 2A type. The karyomorphological characteristics of Ligulariopsis are very similar to those of Ligularia and Parasenecio, but there are moresubmedian-centromeric and median-centromeric chromosomes in Ligulariopsis.

Key words: Ligulariopsis, Senecioneae, Karyomorphology