从花粉形态特征试论壳斗科的系统分类及其演化

中国科学院大学学报

从花粉形态特征试论壳斗科的系统分类及其演化

王萍莉, 张金谈

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1991-01-18 发布日期:1991-01-18
通讯作者: 王萍莉

The Pollen Morphology in Relation to the Taxonomy and Phylogeny of Fagaceae

Wang Ping-Li, Chang King-Tang

Received:1900-01-01 Revised:1900-01-01 Online:1991-01-18 Published:1991-01-18
Contact: Wang Ping-Li

摘要/Abstract

摘要：

本文通过采用光学显微镜、扫描电镜、透射电镜对中国壳斗科，包括三个亚科、6属、103种植物的花粉形态，做了较全面的研究，认为壳斗科植物花粉分为四个类型，分别归于三个亚科。根据花粉形态特征笔者支持将Cyclobalanopsis作为 Quercus的亚属处理，并对三棱栎的分类位置及壳斗科各属的亲缘关系及演化进行了讨论。

关键词: 壳斗科, 花粉形态, 超微结构, 系统演化

Abstract:

The present paper deals with the pollen morphology of 103 species belonging to six

genera-Castanea, Castanopsis, Lithocarpus, Quercus, Fagus and Trigonobalanus in three

subfamilies-Castaneoideae, Quercoideae and Fagoideae. All pollen grains were examined

under light microscope and scanning electron microscope, and those of some species were ex-

amined under transmission electron microscope. The results may be summarised as follows:

1. Pollen morphology of Fagaceae, seems to support division of the family into three

subfamilies. Fagoideae, Castaneoideae and Quercoideae.

2. Four types of pollen grains are recognized in Fagaceae:

1) Fagus-type (representative genus: Fagus): pollen granis are oblate-sphaeroidal,

(31.5-39.9) x (35.7 46.2) μm in size, 3(-4)-colporate, peritreme or goniotreme, granulate-

ornate under LM., granulate or verrucate under SEM.

2) Trigonobalanus-type (T. doichangensis): pollen grains are suboblate-sphaeroidal,

(23.1-29.4) ×(25.2-29.4) μm in size, 3-colporate, goniotreme, obscurely granulate-ornate

under LM, densely granulate or verrucate under SEM.

3) Quercus-type (Quercus): pollen grains are subspheroidal-subprolate, (21-44.3)

× (16.8-39.9) μm in size. 3-colporoidate (-3-colpate), peritreme, crassgranulate or finely-gra-

nulate under LM, tuberculate verrucate or spinate under SEM.

4) Castanea-type (including Castanea, Castanopsis, Lithocarpus): Pollen grains are

prolate-supraprolate, (14.7-23.1)×(10.5-16.8)μm in size; 3-colporate, peritreme, obscu-

rely ornate or subpsilate, under LM, rugulose, striate-rugulate or crass-striate under SEM.

3. Pollen grains of Cyclobalanopsis age very similar to those of Quercus, and there-

fore we support the treatment of Cyclobalanopsis as a subgenus of Quercus.

4. On the basis of shape, type of aperture and exine structure, pollen of Trigonobalanus

is distinguishable from those of the other genera in Fagaceae and it may be a new type of Fagaceae;

5. On the basis of pollen morphology, morphological characters and geological stratification a scheme of phylogeny of Fagaceae is here presented.

Key words: Fagaceae, Pollen morphology, Ultrastructure, Phylogeny

王萍莉, 张金谈. 从花粉形态特征试论壳斗科的系统分类及其演化[J]. 中国科学院大学学报.

Wang Ping-Li, Chang King-Tang. The Pollen Morphology in Relation to the Taxonomy and Phylogeny of Fagaceae[J]. .

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