欢迎访问中国科学院大学学报,今天是

中国科学院大学学报

• • 上一篇    下一篇

黑藻属植物的核型分析

姜书庭, 沈础仁   

  1. (安徽淮北煤炭职工卫生学校,淮北)    (安徽蚌埠医学院,蚌埠)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1989-07-10 发布日期:1989-07-10
  • 通讯作者: 姜书庭

Karyotype Analysis of Hydrilla

Jiang Shu-Ting, Seng Chu-Reng   

  • Received:1900-01-01 Revised:1900-01-01 Online:1989-07-10 Published:1989-07-10
  • Contact: Jiang Shu-Ting

摘要:

本文以根尖细胞为材料,观察了黑藻属Hydrilla植物的染色体核型。  它由两群染
  色体组成:1—5 为长染色体,6—8 为短染色体。  染色体基数x=8。轮叶黑藻Hydrilla
  verticillata(L. f.)Royle为二倍体;染色体数目为2n=2x=16;  雌雄之间既无染色体数
  目的差别,也无异型染色体存在;核型公式为2n=2x=16=6m+6Sm十4St。  罗氏轮叶
  黑藻Hydrilla verticillata var.roxburgbii Casp系同源三倍体;  染色体数目为2n=3x=24;

  核型公式为2n=3x=24=9m+9Sm+6St。

关键词: 轮叶黑藻, 罗氏轮叶黑藻, 核型

Abstract:

The present paper reports the chromosome number and karyotype of the genus
Hydrilla. H. verticillate was found to have 2n=16.  The karyotype is 2n=16=6m+6sm+
4st.  No difference between the male and the female was found in the work. H. verticillata
var. roxburghii Casp. has the somatic chromosome number 2n=24, and its karyotype is 2n=
3x=24=9m+9sm+6st.  The variety may be a autotriploid.   The karyotype of the genus is
obviously bimodal, with No. 1-5 in the first group and 6-8 in the second group.

Key words: Hydrilla verticillata, H.verticillata var.roxburghii, Karyotype