| 中国藁本属花粉形态及其系统学意义 |
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| 引用本文： | 王萍莉,溥发鼎,马建生.中国藁本属花粉形态及其系统学意义[J].中国科学院研究生院学报,1991,29(3):235-245. |
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| 作者姓名： | 王萍莉 溥发鼎 马建生 |
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| 摘 要： | 本文报道了藁本属Ligusticum 25种植物的花粉形态，包括本属的模式种(苏格兰藁本L．scothicum，中国不产，分布于苏联。朝鲜、日本和北美)。其中17种为首次报道。通过对29个样品材料的光学显微镜、扫描电镜观察，及对本属中有代表性的4种植物的花粉做了超薄切片，用透射电镜观察了外壁结构，结果如下：花粉可归为菱形、椭圆形、矩形、赤道收缩4个花粉类型。各类型间的演化趋势是：菱形→椭圆形；菱形→长菱形→矩形→赤道收缩形。本属萌发孔类型，可分为角孔类和边孔类。作者从花粉资料支持Drude关于藁本属在伞形科中的系统位置的主张；支持K.-pol(1916)将岩茴香属Tlingia Regel(1858)和M.Hiroe(1958)将拟藁本属Ligusticopsis Leute(1969)分别归入藁本属中的主张。
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| 关 键 词： | 伞形科 藁本属 花粉形态 系统位置 |
Pollen Morphology of the Genus Ligusticum from China and Its Systematic Significance |
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| Wang Ping-Li,Pu Fa-Ting,Ma Jian-Sheng.Pollen Morphology of the Genus Ligusticum from China and Its Systematic Significance[J].Journal of the Graduate School of the Chinese Academy of Sciences,1991,29(3):235-245. |
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| Authors: | Wang Ping-Li Pu Fa-Ting Ma Jian-Sheng |
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| Abstract: | The genus Ligusticum (Umbelliferae)consists of over 60 specics. So far found are
34 species in China. In the present paper pollen morphology of 25 species of Ligusticum were
investigated. Among them only L.scothicum L.is not distributed in China, but in the Soviet
Union, Korea, Japan and North America. Pollen grains of all the species were examined by
LM, SEM and four species examined under TEM. Seventeen species are palynologically re-
ported here for the first time.
Based on our observation and data from other authors the shape of pollen grains
in Ligusticum may be divided into four types: (1)Rhomboidal, P/E 1.14-1.87; colpi slen-
der; pores goniotreme, rectangular, protruding; exine 2-layered, nearly equal in thickness,
columellae inaistinct, sculpture reticulate or obscure under LM, psilate and finely rugulate
under SEM ( including L. franchetii; L. tachiroei and L. sikiangensis); (2) Ellipsoidal,
P/ E 1.72-2.25; colpi slender, rarely syncolpate; pores pleurotreme, rarely goniotreme,
subrectangular; exine 2-layered, nearly equal in thickness, columellae distinct, sculpture
reticulate, distinct or indistinct under LM, rugulate or brevistriate-reticulate under SEM (in-
cluding L. brachylobum; L.pteridophyllum); (3) Rectangular, P/E 1.71-2.42; colpi long,
rather long or wide and short; pores pleurotreme, rounded, subrounded or lalongate; exine
2-layered, sexine thicker than nexine; columellae distinct, sculpture reticulate distinct or ob-
scure under LM, rugulate, brevistriate or striate-reticulate under SEM ( L. angelicifolium
L. capillaceum; L. multivittatum; L. sinense ; L. sinense cv. Chuanxiong ; L. sinense cv. Fuxiong ;
L. jeholense; L. involucratum; L. oliverianum; L. scothicum; L. scapiforme; L. hispidum;
L. daucoides; (4) Equatorial-constricted, P/E 2.00-2.42; colpi short or rather short; pores
rounded, ellipsoidal or lalongate; exine 2-layered, sexine thicker than nexine, columellae dis-
tinct, sculpture distinctly reticulate under LM, rugulate, brevistriate or striate-reticulate undr
SEM (L.filifolium; L. discolor; L. ajaense; L. acuminatum)
The revolutionary trends of pollen types are as follows: rhomboidal→ ellipsoidal;
rhomboidal→ lalongate-rhomboidal→ rectangular→ equatorial-constricted. The aperture is
of two types i.e.goniotreme and pleurotreme.
Regel (1858)treated Tilingia as an independent genus and Leute (1969)separated the
genus Ligusticpsis from Ligusticum, but pollen information supports K.-Pol. (1916) and
Hiroe's (1979)systematic arrangement, placing Tilingia and Ligusticopsis into Ligusticum,
because Tilingia and Ligusticopsis are similar to Ligusticum in pollen morphology:tricolporate, exine 2-layered, columellae usually distinct and sculpture reticulate. |
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| Keywords: | Umbelliferae Ligusticum Pollen morphology Systematics |
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