| 手参属花粉形态及其分类学意义 |
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| 引用本文： | 席以珍,郎楷永,胡玉熹.手参属花粉形态及其分类学意义[J].中国科学院研究生院学报,2000,38(2):137-140. |
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| 作者姓名： | 席以珍 郎楷永 胡玉熹 |
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| 摘 要： | 首次报道了兰科的手参属Gymnadenia国产5种植物花粉形态的研究结果，并与邻近的兜被兰属
Neottianthem 花粉进行了对比研究。前者花粉小块形状大多不规则，少数为三棱锥体形；而后者花粉小块大多形状为三棱锥体形，少数形状不规则。手参属花粉外壁表面具很细微的小穿孔、皱波状，小穴和小穿孔与沟渠状纹饰共存，或沟渠状等；而兜被兰属外壁表面纹饰明显，具有5种类型： (1)小穿孔，(2)表面近光滑，(3)沟渠状，(4)拟网状，(5)典型的网状纹饰。手参属花粉表面具粘丝，而兜被兰属花粉表面没有发现粘丝。此外，本文还探讨了手参属和兜被兰属两属花粉在分类学上的意义。
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| 关 键 词： | 花粉形态 手参属(兰科) |
Pollen morphology of Gymnadenia R. Br. (Orchidaceae) and its taxonomic significance |
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| XI Yi-Zhen,LANG Kai-Yong,HU Yu-Shi.Pollen morphology of Gymnadenia R. Br. (Orchidaceae) and its taxonomic significance[J].Journal of the Graduate School of the Chinese Academy of Sciences,2000,38(2):137-140. |
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| Authors: | XI Yi-Zhen LANG Kai-Yong HU Yu-Shi |
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| Abstract: | Pollen morphology of five species from China in the genus Gymnadenia R. Br. (Orchi-
daceae) was investigated in this work. Pollen characteristics of this genus were compared to those of
its closely related genus, Neottianthe Schltr. It is found that there are some differences of pollen
morphology between the two genera, e.g.: (A) Pollen massulae are mostly irregular less frequently
trigonous-conical in Gymnadenia, while mainly trigenuus-conical less frequently irregular in Neotti-
anthe; (B) Ornamentation of pollen exine surface is usually indistinct, but microperforate, mi-
crorugulate, microfoveolate or both microperforate and microfossulate in high magnification in Gym-
nadenia, but more distinct in Neottianthe. Exine ornamentation of this genus can be divided into
five types, ( 1 ) almost smooth, or very obscurely fosset, (2) perforate, (3) fossulate or foveolate,
(4) reticuloid, (5) typically reticulate. (C) the surface of pollen massulae in Gymnadenia possess
viscin thread, but that in Neottianthe does not. The result of this work supports the separation ofNeottianthe from Gymnadenia as an independent genus. |
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| Keywords: | Pollen morphology Gymnadenia R．Br． |
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