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中国荚蒾属植物孢粉学研究

狄维忠, 任毅, 王国瑞   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1993-03-10 发布日期:1993-03-10
  • 通讯作者: 狄维忠

A Study on Pollen Morphology of the Genus Viburnum from China

Di Wei-zhong, Ren Yi, Wang Guo-rui   

  • Received:1900-01-01 Revised:1900-01-01 Online:1993-03-10 Published:1993-03-10
  • Contact: Di Wei-zhong

摘要:

对国产荚蒾属Viburnum Linn.植物花粉的光学显微镜及扫描电镜观察表明:1.花粉特征在组
间的分类学意义不大,而在组内的每一种都具各自的花粉特征。2.表面纹饰类型包括(1)外壁具半覆盖层,网状纹饰,网脊光滑;(2)外壁具半覆盖层,网状纹饰,网脊上具瘤状突起;(3)外壁无覆盖层或部分成半覆盖层,具鼓锤状基柱或基柱网,基柱顶端具瘤状突起。3.沟类型包括:(1)沟沿处外壁无覆盖层;(2)沟沿处外壁具半覆盖层,网状纹饰;(3)沟沿处外壁具覆盖层;(4)在一极形成合沟。内孔类型包括(1)看不见明显的孔膜;(2)孔膜半球状,与外壁不连续;(3)孔膜半球状,与外壁相连续;(4)孔膜半椭圆球状,纵长;(5)孔膜半椭圆球状,横架于沟间而类似于桥。文中同时对若干组内分类学问题进行了探讨。

关键词: 荚蒾属, 花粉形态, 分类

Abstract:

The present study on pollen grains of the genus Viburnum Linn. Shows that:
1. The pollen characteristics are of no significance in division of sections, but each species has
its own pollen characteristics. 2. The exine can be divided into three types: I. Exine
semitectate, reticulate, muri psilate;  II. Exine semitectate, reticulate, muri verrucate;  III. Exine
intectate, retipilate or pilate, the heads of pila verrucate. The evolutionary trend of the
exine is III→II→I. 3. Four types of colpus margin are recognized: I. intectate;  II. The
colpus margin semitectate, reticulate;  III. The colpus margin tectate;  IV. Syncolpate at one
pole, the margin tectate (only in V. farreri). 4. The ora can be divided into five types ac-
cording to its membrane shape under SEM: I. The membrane of ora indistinct;  II. The
membrane of ora semispherical, discontinuous with colpus margin;  III. The membrane of
ora semispherical, continuous with colpus margin;  IV. The membrane of  ora se-
mi-ellipsoidat, lolongate; V. The membrane of ora semi-ellipsoidal, lalongate, across the
colpus like a bridge. 5. According to both pollen characters and inflorescence, the authors
suggest that Sect. Pseudotinus be divided into two subsections, one including V. sympodiale,
V. furcatum and V. latanoides, which have large sterile marginal flowers with the exine be-
longing to the Type I, and the other including only V. nervosum, which has no large sterr-
ile marginal flowers with the exine belonging to the Type III.

Key words: Viburnum Linn., Pollen morphology, Classification