中国细辛属花粉形态研究

本文对中国细辛属Asarum27种及4变种、1变型的花粉形态分别做了光学显微镜和扫描电镜的观察和照相,发现该属花粉的萌发孔变异较大,可作为分亚属及分种的重要依据之一。花粉粒外壁纹饰主要分两类：瘤状纹饰下为网状纹饰,或瘤状纹饰下为脑纹状纹饰。细辛亚属与杜衡亚属间的界限较明显,与植物形态分类的结果基本一致。本文还讨论了国产及日本产双叶细辛A．caulescens Maxim和华细辛A．sieboldii Miq．在花粉形态上的差异,并对植物外部形态上彼此相似的几个种的花粉的形态特征做了比较。     

中国北部绣线菊属的花粉形态及分类学意义

本文用光学显微镜和扫描电镜观察了中国北部绣线菊属ＳｐｉｒａｅａＬ．２１种及６个变种的花粉形态,描述了外壁纹饰的形态特征,指出了外壁纹饰特征在分类上的意义。绣线菊属的花粉为球形至长球形,外壁纹饰为条网状至条纹状。外壁纹饰类型不具有属内分组意义,但对一些种类具有一定的分类价值。花粉形态支持将曲枣绣线菊Ｓ．ｆｌｅｘｕｏｓａＦｉｓｃｈ。并入石蚕叶绣线菊Ｓ．ｃｈａｍｏｅｄｒｙｆｏｌｉａＬ．的观点［Ｍａｘｉｍｏｗｉｃｚ,Ｃ．Ｊ．（１８７９）、Ｒｅｈｄｅｒ,Ａｉ．（１９４０）］,不同意将蒙古绣线菊毛枝变种Ｓ．ｍｏｎｇｏｌｉｃａＭａｘｉｍ．ｖａｒ．ｔｏｍｅｎｔｕｌｏｓａＹｕ提升为贺兰山绣线菊Ｓ．ｔｏｍｅｎｔｕｌｏｓａ（Ｙｕ）Ｙ．Ｚ．Ｚｈａｏ［赵一之（１９８７）］。     

中国石蒜属植物花粉形态的研究

利用光学显微镜和扫描电镜对我国石蒜属ＬｙｃｏｒｉｓＨｅｒｂ．１１种植物花粉形态进行系统地研究,并对其中６种具有代表性植物花粉进行了透射电镜观察。该属植物花粉舟形或肾形;萌发孔为远极单槽;在光学显微镜和扫描电镜下观察,外壁具网状纹饰;在透射电镜下观察,外壁包括外壁－１和外壁－２两层,外壁－１是由半覆盖层、柱状层和基层组成,外壁－２很薄。根据花粉形态及其他器官特征,对本属植物分类地位也进行了一些讨论。     

中国鸢尾属花粉形态研究

本文借助光学显微镜和扫描电镜,对我国产鸢尾属Iris L．32种植物的花粉形态进行 了观察。该属植物的花粉为舟形或近球形。萌发孔可分为远极单沟、远极单沟-拟沟、二合 沟及无萌发孔等类型。外壁主要为网状纹饰,少数具瘤状或鼓槌状纹饰。本文依据花粉形态 和其它器官特征,对本属花粉外壁及萌发孔的演化趋势及某些种的分类地位进行了探讨。     

中国鼠李族花粉形态的研究

本文对国产鼠李科鼠李族5属25种的花粉形态进行了光学显微镜和扫描电镜的观察,并观察了 乌苏里鼠李的外壁超微结构。根据花粉大小、孔沟交界处四块加厚的程度和所形成的H形明显与否以及纹饰的不同作出了分类检索表,同时根据花粉形态特征认为把鼠李属的裸芽亚属和鳞芽亚属分立成为两个独立的属是比较适宜的。     

中国东属植物花粉形态及其系统学意义

从系统学分类学的角度出发,对国产栎属31个种的花粉进行了光学显微镜和扫描电镜观察。研究结果表明栎属的花粉萌发孔对该属的系统与分类无太大的参考价值;但栎属的花粉纹饰有颗粒状,聚粒状两种主要类型,具有重要的系统学分类学价值。花粉形态的研究结果支持将栎属植物划分为常绿类与落叶类的观点,栎属巴东栎组植物的花粉纹饰在种间存在分化,花粉形态的研究结果支持将巴东栎组至少划分为两个不同类群的观点;在佐以其他证据的情况下,栎属植物的花粉纹饰还具有重要的分类学价值。     

中国栎属植物花粉形态及其系统学意义

从系统学分类学的角度出发 ,对国产栎属 31个种的花粉进行了光学显微镜和扫描电镜观察。研究结果表明栎属的花粉萌发孔对该属的系统与分类无太大的参考价值 ;但栎属的花粉纹饰有颗粒状、聚颗粒状两种主要类型 ,具有重要的系统学分类学价值。花粉形态的研究结果支持将栎属植物划分为常绿类与落叶类的观点 ;栎属巴东栎组植物的花粉纹饰在种间存在分化 ,花粉形态的研究结果支持将巴东栎组至少划分为两个不同类群的观点 ;在佐以其他证据的情况下 ,栎属植物的花粉纹饰还具有重要的分类学价值     

杜鹃花属植物花粉形态及其分类学意义

利用扫描电子显微镜对5个亚属20种杜鹃花属植物的花粉形态进行了观察和比较研究,其中大部分(16种)为首次报道。杜鹃花属花粉均为四合花粉,呈正四面体排列。四合体为圆角三角形,连接紧密。单粒花粉为球形或近球形,具三沟孔。在扫描电镜下,除了杜鹃亚属的百合杜鹃、羊踯躅亚属的羊踯躅以及马银花亚属的马银花组具有明显的纹饰特征之外,其它类群的形态特征相互重叠,不足以作为现有亚属的分类依据。花粉粒具不同的外壁纹饰,可为分类研究提供孢粉学方面的证据,但应慎重应用花粉形态对杜鹃花属植物特定种进行分类鉴定。     

中国石蒜属植物花粉形态的研究

利用光学显微镜和扫描电镜对我国石蒜属Lycoris Herb.11种植物花粉形态进行系统地研究,并对其中6种具有代表性植物花粉进行了透射电镜观察。该属植物花粉舟形或肾形;萌发孔为远极单槽;在光学显微镜和扫描电镜下观察,外壁具网状纹饰;在透射电镜下观察,外壁包括外壁-1和外壁-2两层,外壁-1由半覆盖层、柱状层和基层组成,外壁-2很薄。根据花粉形态及其他器官特征,对本属植物分类地位也进行了一些讨论。     

国产毛茛组植物孢粉形态学研究

对国产毛茛组１５种２变种的花粉形态进行了光学显微镜和扫描电镜的观察。根据花粉萌发孔类型及外壁纹饰,可将它们分布５种类型,花粉形态在系统分类上无意义,但在组间分类上有一定系统学意义。ＲａｎｕｎｃｕｌｕｓｔｒｉｇｏｎｕｓＨａｎｄ．－Ｍａｓｚｚ。花粉散孔,平坦覆盖层。     

The Pollen Morphology in Relation to the Taxonomy and Phylogeny of Fagaceae

The present paper deals with the pollen morphology of 103 species belonging to sixgenera-Castanea, Castanopsis, Lithocarpus, Quercus, Fagus and Trigonobalanus in threesubfamilies-Castaneoideae, Quercoideae and Fagoideae. All pollen grains were examinedunder light microscope and scanning electron microscope, and those of some species were ex-amined under transmission electron microscope. The results may be summarised as follows:1. Pollen morphology of Fagaceae, seems to support division of the family into threesubfamilies. Fagoideae, Castaneoideae and Quercoideae.2. Four types of pollen grains are recognized in Fagaceae:1) Fagus-type (representative genus: Fagus): pollen granis are oblate-sphaeroidal,(31.5-39.9) x (35.7 46.2) μm in size, 3(-4)-colporate, peritreme or goniotreme, granulate-ornate under LM., granulate or verrucate under SEM.2) Trigonobalanus-type (T. doichangensis): pollen grains are suboblate-sphaeroidal,(23.1-29.4) ×(25.2-29.4) μm in size, 3-colporate, goniotreme, obscurely granulate-ornateunder LM, densely granulate or verrucate under SEM.3) Quercus-type (Quercus): pollen grains are subspheroidal-subprolate, (21-44.3)× (16.8-39.9) μm in size. 3-colporoidate (-3-colpate), peritreme, crassgranulate or finely-gra-nulate under LM, tuberculate verrucate or spinate under SEM.4) Castanea-type (including Castanea, Castanopsis, Lithocarpus): Pollen grains areprolate-supraprolate, (14.7-23.1)×(10.5-16.8)μm in size; 3-colporate, peritreme, obscu-rely ornate or subpsilate, under LM, rugulose, striate-rugulate or crass-striate under SEM.3. Pollen grains of Cyclobalanopsis age very similar to those of Quercus, and there-fore we support the treatment of Cyclobalanopsis as a subgenus of Quercus.4. On the basis of shape, type of aperture and exine structure, pollen of Trigonobalanusis distinguishable from those of the other genera in Fagaceae and it may be a new type of Fagaceae;5. On the basis of pollen morphology, morphological characters and geological stratification a scheme of phylogeny of Fagaceae is here presented.     

红花玉兰等5个玉兰种花粉形态观察及分类学意义

通过对红花玉兰（Magnolia wufengensis L. Y. Ma et L. R. Wang）等5个玉兰种的花粉的光学显微镜和扫描电子显微镜观察拍照,测量光学显微镜下的花粉大小并对其进行统计学分析。结果表明：光学显微镜下,木兰属5个种的花粉均呈现椭圆形或近圆形,各种之间大小、形状方面有较大差异,种内部也存在不同程度的差异;扫描电子显微镜下,各种花粉均为舟形,且具有闭合、长及两端的远极萌发单沟等一致特征,花粉表面纹饰、突起等特征在种内部比较稳定,不同种之间差异明显,可以为木兰属植物种的划分提供比较准确的依据。     

Pollen morphology in relation to the taxonomy and phylogeny of some native Greek Aegilops species

The pollen morphology of some native Greek Aegilops species is investigated in LM (quantitative pollen characters) and SEM (exine sculpture) using acetolysed material. Furthermore, quantitative data are subjected to a multivariate analysis. The tetraploid Ae. cylindrica and its diploid parent Ae. caudata show a distinct morphological affinity as regards their quantitative pollen profile and the features of the exine sculpture. The tetraploid Ae. triuncialis is morphologically divergent from both its parents Ae. caudata and Ae. umbellulata due to the very large values of its quantitative pollen characters. However, the SEM survey of the exine sculpture indicates a rather high degree of similarity between Ae. triuncialis and Ae. umbellulata. No significant differences have been found between the two varieties of Ae. caudata (caudata and polyathera) concerning the quantitative pollen characters as a total or the morphology of the exine sculpture. The resultant clustering of the taxa on the basis of the quantitative pollen characters as well as the recorded similarities of their exine pattern are related to their sectional classification based on cytogenetical and morphological data.     

New Taxa of Epimedium L. from China

Three new species and a new variety, Epimedium coactum, E. coactum var. longtouhum, E. trunctum, E. glandulosopilosum are described in this paper. The morphological characters of trichomes, cuticle of leaf surface and pollen grains of the new species and theirallies were studied under LM and SEM, and shown in plates 1-3.     

禾本科针茅族(Stipeae)7种花粉形态比较研究

利用光学显微镜(LM)和扫描电子显微镜(SEM)观察了针茅族7种花粉形态.观察显示,花粉形态均为近球形,具远极单孔,并有萌发孔盖(Operculum).LM观察到花粉外壁纹饰具粗细不一的颗粒状结构,SEM则可辨不同种类的颗粒或瘤状结构的大小及其形成图案的差异,其中芨芨草属(Achnatherum)花粉外壁纹饰的种间差异...     

Pollen morphology of Phyllosma and Sheilanthera (Diosminae: Rutaceae) and its taxonomic implications

Phyllosma (two species) and Sheilanthera (one species) are members of the taxonomically problematic subtribe Diosminae, Rutaceae. Pollen morphology of all three species was investigated by LM, SEM and TEM to shed light on their relationships to other genera of the subtribe. Sheilanthera shares pollen morphological features with many other species in the subtribe, but the pollen of Phyllosma is distinctive. Possible relationships between Sheilanthera and Acmadenia, and between Phyllosma and Agathosma are suggested. The macromorphological characters of the species correspond to the pollen morphology.     

中国产瘤蕨属植物的孢子形态研究及其分类学意义

本文对5种中国产瘤蕨属植物的孢子形态的进行了光镜和扫描电镜的观察,其中2种的扫描电镜观察是首次报道,对形态特征和分类学意义进行了讨论,阔鳞瘤蕨与瘤蕨孢子表面纹饰的明显区别为新种阔鳞瘤蕨的成立提供了有力证据。     

Pollen Morphology of Tundra Shrubs and Submarginal Plants from Barrow, Alaska

Investigation of plant morphological features, pollen, and habitat have been made for two shrub species from Barrow, Alaska, namely Dryas integrifoila M. Vahl and Salix rotundifolia Trautv., both of which are endemic to the Arctic floristic area. The former species has small lanceolate or plate leaves, whereas the latter has rounded leaves with distinct veins, rich in vitamin C. Both have dwarf and sprawling habits. Pollen studies showed that the pollen grains of the two species are spheroidal to sub-spheroidal or prolate. The type of aperture was tricolporate; pollen size 26.3-31.3 μm; ornamentation finely reticulate under a light microscope （LM） and strlate-reticulate under a scanning electron microscope （SEM） for D. integrafoila and finely reticulate under the LM and SEM for S. rotundifolia. Comparisons were made between the pollen from the same species from Arctic collections with those from China and Japan. Investigation of pollen morphology of tundra plants can provide significant data for comparative studies of fossil pollen and for the reconstruction of paleovegetation and paleoclimate in the Barrow area.