中国紫草科紫草亚科琉璃草族花粉形态的研究

doi:10.7523/j.issn.2095-6134.2001.6.003

中国科学院大学学报 ›› 2001, Vol. 39 ›› Issue (6): 515-522.DOI: 10.7523/j.issn.2095-6134.2001.6.003

中国紫草科紫草亚科琉璃草族花粉形态的研究

刘家熙,张玉龙,宁建长,赵云云,李雅轩,张静梅,孙晓红

收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2001-11-10
通讯作者: 刘家熙

Pollen morphology of the tribe Cynoglosseae of Boraginoideae (Boraginaceae) in China

LIU Jia-Xi, ZHANG Yu-Long, NING Jian-Chang, ZHAO Yun-Yun, LI Ya-Xuan, ZHANG Jing-Mei

Received:1900-01-01 Revised:1900-01-01 Published:2001-11-10
Contact: LIU Jia-Xi

摘要/Abstract

摘要：

对中国紫草科Boraginaceae 紫草亚科Boraginoideae琉璃草族Trib．Cynoglosseae 7属16种的花粉形态进行了光学显微镜和扫描电镜观察，并对其中5种的花粉外壁超微结构进行了透射电镜观察。该族花粉为茧形，少数为近长球形、长球形或卵球形；体积很小，大小为7～15.7μm×3.5～13.9μm，P／E=1.6～2.02；三孔沟和三假沟相间排列；除斑种草属Bothriospermum Bge．外，均有赤道环带；外壁常光滑，两极具或不具穿孔，少数具小瘤状纹饰；外壁较薄，包括外壁外层和外壁内层，外壁外层又由完全覆盖层、柱状层和基层组成。以上表明该族花粉有很多共同特征，但属之间还是有区别。文中作了花粉分属检索表。在该族中，斑种草属的花粉没有赤道环带，表明它是比较原始的类群。它和齿缘草族的花粉更相似，因此把它放在齿缘草族Trib．Eritrichieae比放在琉璃草族似乎更合适。长蕊琉璃草属Solenanthus

Ledeb．由于花粉卵球形、亚等极，可认为是琉璃草族中最进化的属。

关键词: 花粉形态, 紫草亚科, 琉璃草族

Abstract:

Pollen morphology of 16 Chinese species representing 7 genera in the tribe Cynoglosseae

of Boraginoideae(Boraginaceae) was examined under LM and SEM, and 5 species under TEM. Pol-

len grains are cocoon-shaped, rarely subprolate, prolate or ovoid, very small, 7～ 15.7μm× 3.5 ~

13.9 μm in size, P/E = 1.6～2.02; 3-colporate apertures alternate with 3-pseudocolpi, with equa-

torial endocingulus except those in Bothriospermum; exine surface is usually smooth, with or without

perforations in two poles, rarely with tuberculate ornamentation; exine is rather thin and includes

ectexine and endexine, while ectexine consists of imperforate tectum, columellae and foot-layer.

The tribe Cynoglosseae has many common characters of pollen grains, but there are some differences

among genera. A key to the genera is given based on pollen morphology. Bothriospermum, without

endocingulus, may be a primitive genus in this tribe, and its pollen morphology is more similar to

that of Eritrichieae than to Cynoglosseae, thus it seems more reasonable to put it into Eritrichieae.

Solenanthus may be the most advanced genus in the tribe Cynoglosseae for its pollen grains of sub-

isopolar and ovoid shape.

Key words: Pollen morphology, Boraginoideae, Cynoglosseae

刘家熙,张玉龙,宁建长,赵云云,李雅轩,张静梅,孙晓红. 中国紫草科紫草亚科琉璃草族花粉形态的研究[J]. 中国科学院大学学报, 2001, 39(6): 515-522.

LIU Jia-Xi, ZHANG Yu-Long, NING Jian-Chang, ZHAO Yun-Yun, LI Ya-Xuan, ZHANG Jing-Mei. Pollen morphology of the tribe Cynoglosseae of Boraginoideae (Boraginaceae) in China[J]. , 2001, 39(6): 515-522.

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中国紫草科紫草亚科琉璃草族花粉形态的研究

Pollen morphology of the tribe Cynoglosseae of Boraginoideae (Boraginaceae) in China

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