穗花杉属的核形态及其系统位置的探讨

中国科学院大学学报 ›› 2000, Vol. 38 ›› Issue (6): 522-527.

穗花杉属的核形态及其系统位置的探讨

周其兴,顾志建,岳中枢

收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2000-11-10
通讯作者: 周其兴

Karyomorphology and relationships of Amentotaxus Pilg.

ZHOU Qi-Xing, GU Zhi-Jian, YUE Zhong-Shu

Received:1900-01-01 Revised:1900-01-01 Published:2000-11-10
Contact: ZHOU Qi-Xing

摘要/Abstract

摘要：

研究了穗花杉Amentotaxus argotaenia和云南穗花杉A.yunnanensis的核形态。它们的有丝分裂间期核都为复杂染色中心型，前期染色体为中间型，中期染色体数目均为2n=36，核型相似，均为K(2n)＝36=8m+28T，核型不对称性属于1B型，N．F．值为44。云南穗花杉的核型为首次报道。结合其它学科的资料，认为穗花杉属同榧属Torreya比较接近。

关键词: 穗花杉属, 核形态, 系统位置

Abstract:

In this paper, two species in Amentotaxus Pilg. from the mainland of China , A. ar-

gotaenia and A. yunnanensis, were karyomorphologically studied. They commonly showed the inter-

phase nuclei of the complex chromocenter type and the mitotic prophase chromosomes of the intersti-

tial type. Their karyotypes were formulated as K(2n) = 36 = 8m + 28T, both belonging to Stebbins'

1B type and with the N. F. value ( number of fundamental) being 44. The chromosome number and

karyotype of A. yunnanensis were reported here for the first time. Karyomorphological features of

Amentotaxus, especially the N. F. value, together with other evidence, have indicated its close re-

lationship with Torreya within the Taxaceae.

Key words: Amentotaxus Pilg., Karyomorphology, Systematic position

周其兴,顾志建,岳中枢. 穗花杉属的核形态及其系统位置的探讨[J]. 中国科学院大学学报, 2000, 38(6): 522-527.

ZHOU Qi-Xing, GU Zhi-Jian, YUE Zhong-Shu. Karyomorphology and relationships of Amentotaxus Pilg.[J]. , 2000, 38(6): 522-527.

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