天南星属植物的花粉形态

利用扫描电镜对天南星科天南星属（Arisaema)8组25种植物的花粉进行研究（其中,12种前人未观察过,12种中11种为我国特有）。结果显示：本属花粉形态基本一致,即球形,无萌发孔,无覆盖层,具微刺,是一个非常自然的类群。但各个种在花粉粒大小,刺长,刺的形状,刺基部上径,刺的密度和刺间纹饰方面差别较大,可以作为区别种的依据。这进一步证实了前人的结论。花粉形态支持学者们关于天南星属是本科最进化的类群之一的观点。天南星属花粉可能由线花组从花粉大小适中、刺密度居中向大或小、密或疏的方向发展;刺间表面纹饰对探讨组间演化关系意义不大。Murata等对于花粉刺间具较密颗粒为曲序组特征的界定可疑;把A.yunnanense Buchet、A.bathycoleum Hand.-Mazt.和A.prazeri Hook.f.归入曲序组似乎不妥。A.consanguineum Schott和A.fraternum Schott的花粉形态没有支持李恒对这两个种的归并。     

甘薯属10种植物花粉形态扫描电镜观察

对用于育种研究的甘薯属(Ipomoea)10种植物花粉形态进行扫描电镜观察研究,以补充该属植物花粉形态学信息. 结果表明,甘薯属植物花粉粒的形状均为近球形,体积较大;花粉萌发孔多为散孔,少数萌发孔不明显;表面纹饰有3种:刺状类型、网状带刺类型和网状类型.根据花粉粒大小、刺的长短、萌发孔特征和表面纹饰类型等可以把这10种植物区分开来,同时发现I.wrightii与已有报道存在较大差异.     

蜘蛛抱蛋属植物花粉形态及系统学意义

用扫描电子显微镜对国产 1 4种蜘蛛抱蛋属植物的花粉形态进行了观察 ,该属植物的花粉形态有长球形和球形 2种 ;外壁纹饰可分为 3大类型 :( 1 )皱波状纹饰 ;( 2 )小芽孢状纹饰 ;( 3)瘤棒状纹饰。它们的演化趋势是 :皱波状纹饰→芽孢状纹饰→瘤棒状纹饰     

新疆石竹属8种植物的花粉形态

利用扫描电镜对8种石竹属（Dianthus）植物的花粉形态进行了观察。结果表明:本属植物花粉为单粒花粉,圆球形,大小为30.5~44.0 μm,具多个萌发孔,孔数为12~16个,分散,孔圆形,孔径4.1~7.0 μm,具孔膜,孔膜上着生有若干棵小刺,花粉外壁具刺状和穴状纹饰,表面有或无穿孔。研究表明：花粉大小、表面纹饰、特别是萌发孔的形态特征存在较明显差异。可为石竹属植物的分类及野生资源利用等相关研究提供了可靠的孢粉学参考。     

珍珠菜属八种植物的花粉形态研究

利用扫描电子显微镜,首次对珍珠菜属(LysimachiaL.)8种植物的花粉形态进行了观察研究,报道了花粉形态特征,探讨了花粉形态特征在分类学上的意义。结果表明:该属花粉粒大小和外壁雕纹可作为分种的依据。     

山东酢浆草属花粉形态的研究

用扫描电子显微镜 ,对山东酢浆草属 3种植物的花粉形态进行观察 ,报道了花粉形态特征 ,并探讨其分类意义。结果表明 :该属花粉粒大小、形状和外壁雕纹可作为分种的依据。     

国产狗娃花属植物的花粉形态研究

利用光镜,扫描电镜对狗娃花属（Heteropappus)7种植物的花粉形态和结构进行了观察研究。发现该属植物花粉粒为近球形或长球形,3孔沟,具刺状纹饰,种间花粉差异主要表现在大小,形状和外壁纹饰细微变化等方面,该属花粉与紫菀属（Aster)和乳菀属（Ca-latella)的相似。表明它们有密切的亲缘关系。     

7种獐牙菜属植物花粉形态的研究

本文应用光学显微镜和扫描电子显微镜,对龙胆科(Gentianaceae)獐牙菜属(Swertia L.)7种植物(獐牙菜Swertia bimaculata(S.et z.)HK.f.Thoms.、水灵芝S.davidii Franch.、江浙獐牙菜S.hickinii Burkill.、贵州獐牙菜S.kouitchensisFranch.、大籽獐牙菜S.macrosperma C.B.Clarke.、翼梗獐牙菜S.nervosa Wall.、紫红獐牙菜S.punicea Hemsl.)的花粉形态作了比较观察,找出了它们的鉴别特征,阐明了獐牙菜属植物花粉的外壁外层表面纹饰的三种类型为条纹—网状、网状和瘤状雕纹。     

国产堇菜属植物花粉形态的研究

本文应用光学显微镜及扫描电镜对国产３２种堇菜属植物的花粉形态进行了观察,结果表明,在光学显微镜下,除Ｖ．ｔｒｉｃｏｌｏｒＬ．外,堇菜属植物的花粉形态比校一致,对本属的分类意义不大。在扫描电镜下的花粉外壁纹饰亦表明本属是一个较为自然的类群。但国产四亚属之间的花粉在外壁纹饰,颗粒的多少和有无,穿孔的多少和有无等方面存在着较明显的差异,而在亚属内则分化校小。支持了Ｊｕｚｅｐｃｈｕｋ（１９４９）和王庆瑞（１９９１）的分类处理。     

三个不同品种费约果的花粉-胚珠比及花粉粒形态的扫描电镜观察

利用扫描电子显微镜对费约果三个品种的花粉粒显微结构形态进行观察,计算三个品种费约果的花粉-胚珠比,并据此分析费约果的形态特征和分类学意义,划分其繁育系统类型。结果表明:‘Coolidge’、‘Mammoth’和‘Unique’三个品种的花粉-胚珠比分别为6±2.37、4.41±1.47和8.52±2.84,其繁育系统为闭花受精型;费约果花粉粒呈辐射对称,极面观近似等边三角形,有明显的三孔沟(合沟),具角萌发孔,其赤道面观为椭圆形,花粉粒表面具颗粒状雕纹;三个品种花粉粒形态相比之下也略有差异,但不明显。从费约果与同科4个属花粉粒的对比中可以得出,费约果花粉粒形态结构符合桃金娘科植物的主要特征,其花粉粒形态在分类学上具有重要意义。     

葫芦科8属11种植物花粉形态的扫描电镜观察

利用扫描电子显微镜,对葫芦科8属10种1变种植物的花粉形态进行观察研究。结果显示:冬瓜属、葫芦属和栝楼属的花粉粒为近球形,具3孔沟;苦瓜属、西瓜属和丝瓜属的花粉粒为长球形,具3沟;黄瓜属的花粉粒为近球形,具3孔;南瓜属的花粉粒为球形,具散孔。花粉粒大小、形状和外壁雕纹属、种间差异显著。     

三种黄花石蒜植物的花粉形态比较

利用光学显微镜和扫描电镜对三种开黄花的石蒜属(Lycoris Herb.)植物的花粉形态进行观察和比较.结果表明:三种植物花粉均为两侧对称,赤道面观呈舟形或肾形,极面观为椭圆形或长椭圆形,萌发孔类型为远极单槽,槽长几达两端;三种植物花粉外壁具网状纹饰,且在网眼底壁及网脊多附有小乳突.通过花粉特征及其他性状的比较研究,对三种黄花石蒜植物的分类鉴定和系统演化关系进行了初步探讨.     

Comparative pollen morphology of Glechoma and Marmoritis(Nepetinae,Lamiaceae)

The pollen morphology of 13 taxa(34 specimens)of the genera Glechoma L.,and Marmoritis Benth.was investigated in detail using light,scanning electron,and transmission electron microscopy.Pollen grains of all studied taxa are small to large in size(P = 32.5-60.4μm,E = 20.2-50.5μm),prolate-spheroidal to prolate in shape and mostly hexacolpate(the amb more or less circular or rarely ellipsoid)with granular membranes.The sexine ornamentation of Glechoma is bireticulate; the muri of the primary reticulum are irregularly circled,and lumen size is short.In contrast,the sexine surfaces of the Marmoritis pollen tend to more elongate or wider at the muri of the primary reticulum than those of the Glechoma.The pollen wall stratification of selected taxa(three from Glechoma and one from Marmoritis)is characterized by unbranched columellae,and continuous or distinctly discontinuous endexine based on transmission electron microscopy observation.The results of Glechoma and Marmoritis reveal rather similar pollen morphological features,however,fine details of sexine ornamentation are characteristic to differentiate the pollen taxa.Although these differences may be useful in establishing the taxonomic boundary between two genera,they are too weak to segregate diagnostic characters.     

Comparative pollen morphology of Glechoma and Marmoritis (Nepetinae,Lamiaceae)

Abstract The pollen morphology of 13 taxa (34 specimens) of the genera Glechoma L., and Marmoritis Benth. was investigated in detail using light, scanning electron, and transmission electron microscopy. Pollen grains of all studied taxa are small to large in size (P= 32.5–60.4 μm, E= 20.2–50.5 μm), prolate‐spheroidal to prolate in shape and mostly hexacolpate (the amb more or less circular or rarely ellipsoid) with granular membranes. The sexine ornamentation of Glechoma is bireticulate; the muri of the primary reticulum are irregularly circled, and lumen size is short. In contrast, the sexine surfaces of the Marmoritis pollen tend to more elongate or wider at the muri of the primary reticulum than those of the Glechoma. The pollen wall stratification of selected taxa (three from Glechoma and one from Marmoritis) is characterized by unbranched columellae, and continuous or distinctly discontinuous endexine based on transmission electron microscopy observation. The results of Glechoma and Marmoritis reveal rather similar pollen morphological features, however, fine details of sexine ornamentation are characteristic to differentiate the pollen taxa. Although these differences may be useful in establishing the taxonomic boundary between two genera, they are too weak to segregate diagnostic characters.     

The pollen morphology of Vicia (Leguminosae)

The pollen morphology of 32 species of the genus Vicia was studied using scanning and transmission electron microscope (SEM and TEM). The interstitia of the pollen of the examined species were found to be either regular columellate, irregular columellate, or granular. The granular pattern was recognized to be apomorphy against the columellate patterns in the tribe Vicieae by comparison with the pollen in the tribes Vicieae, Cicereae, Galegeae, Hedysareae, and Trifolieae. The group of Vicia species having the apomorphy was congruent with that having a known apomorphy of the pistil character. This group with such synapomorphies may be monophyletic, though it is treated as polyphyletic in the present infrageneric system of Vicia.     

22个木槿品种花粉形态与分类研究

为研究木槿(Hibiscus syriacus)不同品种花粉形态的多样性及其亲缘关系,该研究以22个木槿品种的花粉为材料,通过扫描电镜进行形态特征及外壁纹饰观测,然后使用R型聚类分析法和主成分分析法提取合适的指标进行UPGMA聚类分析.结果表明:(1)木槿的花粉均为单粒近球形,直径为148.98～111.65μm;表面...