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中国科学院大学学报 ›› 2000, Vol. 38 ›› Issue (4): 350-354.

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毛茛科鸭跖花属的核形态研究

杨亲二   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2000-07-10
  • 通讯作者: 杨亲二

Karyomorphology of the genus Oxygraphis Bunge (Ranunculaceae)

YANG Qin-Er   

  • Received:1900-01-01 Revised:1900-01-01 Published:2000-07-10
  • Contact: YANG Qin-Er

摘要:

研究了毛茛科鸭(足石)花属Oxygraphis Bunge 3种植物的核形态。其间期核均为复杂中央染色微粒型,前期染色体为中间型,染色体基数为x=8。脱萼鸭(足石)花O.delavayi的染色体明显大于鸭(足石)花O.
glacialis和细叶鸭(足石)花O.tenuifolia的染色体。结果支持鸭(足石)花属是毛茛科毛茛亚族subtrib.Ranunculinae的一个自然成员以及脱萼鸭跖花可能是该属的原始种的观点。

关键词: 染色体, 鸭(足石)花属

Abstract:

 Three species of the genus Oxygraphis Bunge (Ranunculaceae) were karyomorpholog-
ically studied. The interphase nuclei of complex chromocenter type, prophase chromosomes of inter-
stitial type and basic chromosome number of x = 8 were common to all the three species examined,
but the chromosomes of O. delavayi were markedly larger than those of O. glacialis and of O.
tenuifolia. The results support the viewpoints that Oxygraphis is a natural member of the subtribe
Ranunculinae Spach, tribe Ranunculeae DC. in the subfamily Ranunculoideae and that O. dela-
vayi might be the primitive species of this genus.

Key words: Chromosome, Oxygraphis Bunge