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蜡瓣花属的花粉形态研究

张金谈, 张大维   

  • 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: 张金谈

Studies on Pollen Morphology of the Genus Corylopsis

Zhang Jin-Tan (Chang King-Tang), Zhang Da-Wei   

  • Received:1900-01-01 Revised:1900-01-01 Online:1991-07-10 Published:1991-07-10
  • Contact: Zhang Jin-Tan (Chang King-Tang)

摘要:

本文对金缕梅科Hamamlidaceae蜡瓣花属Corylopsis 11种花粉进行光学显微镜和扫描电镜的观察研究。本属花粉除Corylopsis sinensis少量花粉具4沟外均为三沟类型。外壁均具网状纹饰,网眼形状大小略有差异,花粉粒大小虽有些变化,但其它特征均较一致,故在植物分类上本属是相当自然的一个类群。

关键词: 花粉形态, 蜡瓣花属, 金缕梅科

Abstract:

The present paper describes the pollen morphology of 11 species of thc genus
Corylopsis (Hamamelidaceae). The pollen grains were all examined with light microscope and
scanning electron microscope.
     Pollen grains of the genus are prolate, spheroidal or subprolate. Three size types are recog-
nized: (l) 18-23 μm, found in Corylopsis omeiensis Yang, C.gotoana Makino, C. himalayana
Griff and C.platypetala Rehd. et Wils. (2) 24-32μm, found in C. sinensis Hemsl., C.willmottiae
Rehd. et Wils., C.veitchiana Bean, C. brevistyla H.T.Chang, C.multiflora Hance, C.pauciflora
Sieb. et Zucc. and C.spicata Sieb. Zucc. (3) 34-39μm, found in C. wilsonii Hemsl. and C. cordata
Merrill. Pollen grains are 3-colpate and 4-colpate (only infrequently found in Corylopsis
sinensis Hemsl.); the exine is 2-layered, 1.25-2.50μm  thick, distinctly reticulate, sexine al-
most equal to nexine in thickness. From the pollen morphology the genus is considered as a natu-
ral group.

Key words: Pollen morphology, Corylopsis, Hamamelidaceae