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九种水鳖科植物染色体数目及其核型分析

王宁珠   

  1. (中国科学院武汉植物研究所,武汉)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1986-10-18 发布日期:1986-10-18
  • 通讯作者: 王宁珠

Chromosome Numbers and Karyotype Analysis of 9 Species in Hydrocharitaceae

Wang Ning-Zhu   

  1. (Wuhan Institute of Botany Acadimia Sinica, Wuchang)
  • Received:1900-01-01 Revised:1900-01-01 Online:1986-10-18 Published:1986-10-18
  • Contact: Wang Ning-Zhu

摘要:

本文报道了我国产水鳖科植物5属9种染色体数目和核型,发现所有种都是二倍体,它
  们的核型大部分是由中部着丝点(m)和近中部着丝点(sm)组成,少数种具有近端着丝点
  (st)。它可以区分为4种核型:1A,2A和1B,2B。水筛属是原始的,黑藻属是进化的。

关键词: 水鳖科, 水筛属, 黑藻属, 水车前属, 苦草属, 水鳖属, 染色体, 核型

Abstract:

The present paper reports the chromosome numbers and karyotypes in 9
species of 5 genera from China.  It is found that all these analysed species are diploid.
The karyotypes of most species are made of m and sm and of a few of st chromosomes.
These are grouped into four types, 1A, 2A and 1B, 2B.  Blyxa is the most primitive, and
Hydrilla is the most advanced.

Key words: Hydrocharitaceae, Blyxa, Hydrilla, Ottelia, Vallisneria, Hydrocharis, Chromosome