| 沿阶草亚科(百合科)的花粉形态及其属间亲缘关系的探讨 |
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| 引用本文： | 梁松筠,戴伦凯.沿阶草亚科(百合科)的花粉形态及其属间亲缘关系的探讨[J].中国科学院研究生院学报,1992,30(5):427-437. |
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| 作者姓名： | 梁松筠 戴伦凯 |
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| 摘 要： | 本文对山麦冬属Liriope 3种、沿阶草属Ophiopogon 24种和球子草属Peliosanthes 2种植物的花粉，用扫描电镜和透射电镜观察了它们的花粉的形态以及外壁的超微结构。发现它们的花粉外壁纹饰和结构明显的可分为两类：1．皱波状类型：具穿孔类型，山麦冬属和沿阶草属大体属这一类，其外壁外层具覆盖层、柱状层和基层、内层不明显，内壁明显。 2．瘤状突起类型：球子草属大体属这一类，其瘤状突起大小不均，外壁外层无覆盖层， 柱状层为大小不均的小柱，内层不明显，内壁明显。 这表明山麦冬属和沿阶草属的关系密切，但它们与球子草属的关系则较远。本文还论述了这三属的花粉形态与外部形态之间的相关性，并讨论了这三属之间的进化关系。 山麦冬属、沿阶草属和球子草属的外壁纹饰和结构等特征均支持将这三属分成沿阶草族和球子草族的观点。
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| 关 键 词： | 山麦冬属 沿阶草属 球子草属 花粉形态 外壁超微结构 |
Pollen Morphology and Generic Phylogenetic Relationships in Ophiopogonoideae (Liliaceae) |
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| Liang Song-Yun,Dai Lun-Kai.Pollen Morphology and Generic Phylogenetic Relationships in Ophiopogonoideae (Liliaceae)[J].Journal of the Graduate School of the Chinese Academy of Sciences,1992,30(5):427-437. |
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| Authors: | Liang Song-Yun Dai Lun-Kai |
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| Abstract: | In the present work, pollen grains of 3 species of Liriope, 24 species
of Ophiopogon and 2 species of Peliosanthes were examined under scanning electron
microscope, Among them 4 species were also observed under transmission electron
microscope.
The observation (Table 3)shows that Liriope and Ophiopogon distinctly differ
from Peliosanthes in the exine ornamentation and structure, They may be divided
into two types: 1. Rugulate-perforate, ektexine with perforate tectum in Liriope
and Ophiopogon. 2. Verrucate, Verracae unequal in size, ektexine intectate in
Peliosanthes. Pollen morphology shows the close affinity between Liriope and
Ophiopogon, but they are very far from Peliosanthes. The correlation between pol-
len and gross morphology in Liriope, Ophiopogon and Peliosanthes are stated and
their evolutionaly trends are discussed in this paper. The pollen characters support
the placement of Liriope and Ophiopogon in one tribe—Ophiopogoneae, and
Peliosanthes in another tribe—Peliosantheae. Peliosanthes is more advancedthan Liriope and Ophiopogon. |
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| Keywords: | Liriope Ophiopogon Peliosanthes Pollen morphology exine ultrastructure |
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