| 中国蕨类植物孢子形态的研究 Ⅰ. 海金沙科 |
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| 引用本文： | 王全喜,于晶,张宪春,张大维,包文美,王培善.中国蕨类植物孢子形态的研究 Ⅰ. 海金沙科[J].中国科学院研究生院学报,2001,39(1):38-44. |
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| 作者姓名： | 王全喜 于晶 张宪春 张大维 包文美 王培善 |
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| 摘 要： | 此文是中国蕨类植物孢子形态研究的第一部分。首次利用扫描电镜对国产海金沙科Lygodiaceae
海金沙属Lygodium 10种植物的孢子形态进行了观察，并利用透射电镜对孢壁的结构进行了研究。此
外，还对采自国外的另外10种海金沙属植物的孢子进行了比较观察。海金沙属孢子为三裂缝，少数为单
裂缝，其表面纹饰可分为4种类型：①瘤状纹饰，海金沙属多数种类的孢子具此类型；②表面平滑，L.
palmatum、L. subareolatum、L．yunnanense、L. volubile 等属此类型；③疣状纹饰，L. dimorphum、L．digita-
tum、L. kingii等属此类型；④网穴状纹饰，L. scandens，L．reticulatum等属此类型。网状纹饰类型的孢子表面轮廓是由外壁形成，其余类型的孢子表面轮廓由周壁形成。此文还对海金沙属的孢子特征及其在分类上的意义进行了探讨。
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| 关 键 词： | 蕨类植物 孢子形态 海金沙科 海金沙属 中国 |
Spore morphology of pteridophytes from China Ⅰ. Lygodiaceae |
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| WANG Quan-Xi,YU Jing,ZHANG Xian-Chun,ZHANG Da-Wei,BAO Wen-Mei,WANG Pei-Shan.Spore morphology of pteridophytes from China Ⅰ. Lygodiaceae[J].Journal of the Graduate School of the Chinese Academy of Sciences,2001,39(1):38-44. |
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| Authors: | WANG Quan-Xi YU Jing ZHANG Xian-Chun ZHANG Da-Wei BAO Wen-Mei WANG Pei-Shan |
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| Abstract: | This paper is the first report of an investigation on the spore morphology of Chinese
ferns. Spore morphology of 20 species (10 species from China and 10 species from other countries)
in the genus Lygodium (Lygodiaceae) was investigated under scanning electron microscope (SEM)
and transmission electron microscope (TEM). The spores are tetrahedral-globose, trilete, rarely
monolete. The surface ornamentation of the spores can be divided into four main types: In type Ⅰ ,
the surface of spores is tuberculate or spheroid-tuberculate. Most of the species of the genus have
this type of surface ornamentation of spores. In type Ⅱ , the surface of spores is smooth. L. pal-
matum, L . subareolatum , L . yunnanense and L . volubile have this type of surface ornamentation
of spores. In type Ⅲ, both the distal and equatorial areas of spores are coarsely verrucate, while
the proximal area is smooth. L. dimorphum, L. digitatum and L. kingii have this type of surface
ornamentation of spores. In type Ⅳ, the surface of spores is coarsely reticulate. L. scandens and
L. reticulatum have this type of surface ornamentation of spores. The surface contours of the reticu-
late type (type Ⅳ ) are formed by the exospore, while that of the other types (types Ⅰ, Ⅱ, Ⅲ )
are formed by the perispore. The surface ornamentation of spores seems to be stable within species
and thus is of important value in the taxonomy of the genus Lygodium.
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| Keywords: | Pteridophyte Spore morphology Lygodiaceae Lygodium China |
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