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凤仙花属花粉形态及其分类学意义

鲁迎青   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1991-07-10 发布日期:1991-07-10
  • 通讯作者: 鲁迎青

Pollen Morphology of Impatiens L. (Balsaminaceae) and Its Taxonomic Implications

Lu Ying-Qing   

  • Received:1900-01-01 Revised:1900-01-01 Online:1991-07-10 Published:1991-07-10
  • Contact: Lu Ying-Qing

摘要:

本文作者首次观察了峨眉山凤仙花属Impatiens 13个野生种的花粉形态,发现3沟和4沟类型
花粉均出现在这一地区。其中3沟花粉与同科另一属水角属Hydrocera的花粉十分相似。同时注意到
花粉形态与其花的形态在某些方面具相关性,结合地理分布和生长习性等特性,得出以下结论:1.凤仙
花属3沟型花粉所指示的植物类群为一自然类群,并与水角属具有较密切的亲缘关系;2.凤仙花属4沟
型花粉常具种水平上的差异,对属内类群划分具有系统学意义。

关键词: 凤仙花属, 花粉形态

Abstract:

 Two forms of pollen morphology of Impatiens L. (Balsminaceae) have been des-
cribed before: 3-colpate and 4-colpate pollen grains. Pollen grains of 13 species of Impatiens
on Mt. Omei were examined under SEM for the first time and both forms were observed
here, which imply the diversity of species in this region. Of the two forms, 3-colpate one is
quite similar to that of the genus Hydrocera Blume (Balsaminaceae) in external morphology.
This relation also exists between the 3-colpate pollen group and Hydrocera in habit, habitat,
and distribution, etc. It is supposed that the group with 3-colpate pollen type is a natural
one, and may have a close relationship with Hydrocera. The pollen morphology is of impor-
tant significance in classification of the taxa and evaluation of systematic position in the fami-
ly balsaminaceae.

Key words: Impatiens, Pollen morphology