Pollen morphology of some species belonging to Codonoprasum and Allium sections of Allium (Liliaceae-Alliaceae) genus

Biologia ◽  
2006 ◽  
Vol 61 (4) ◽  
Author(s):  
Ümmügülsüm Güler ◽  
Sevil Pehlivan
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Pollen Morphology ◽  
Morphological Characteristics ◽  
Transmission Electron ◽  
Exine Ornamentation ◽  
The Family ◽  
Tem Transmission Electron Microscopy ◽  
Scanning Electron ◽  
Section Level

AbstractPollen morphology of 14 Allium L. species grown in Turkey, that belong to the sections Codonoprasum and Allium, were investigated under LM (light microscopy) and by SEM (scanning electron microscopy). However, the pollens of 5 species were investigated under TEM (transmission electron microscopy). Detailed pollen morphological characteristics are given for Allium in the family on the basis of the results presented here together with data from the literature. The genera Allium homogeneous in both aperture type and exine ornamentation. It is suggested that some palynological characters, such as aperture type and the presence of an operculum, could be of taxonomic value at the section level.

Pollen grain micromorphology in some genera of Ornithogaleae (Asparagaceae, Scilloideae) and its relative significance

Phytotaxa ◽  
2020 ◽  
Vol 458 (4) ◽  
pp. 242-256
Author(s):  
MEHDI HEIDARIAN ◽  
SEYED MOHAMMAD MAHDI HAMDI ◽  
MOHAMMAD MEHDI DEHSHIRI ◽  
TAHER NEJADSATTARI ◽  
SEYED MOHAMMAD MASOUMI
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Pollen Grains ◽  
Pollen Grain ◽  
Relative Significance ◽  
Phylogenetic Studies ◽  
Transmission Electron ◽  
Exine Ornamentation ◽  
Tem Transmission Electron Microscopy ◽  
Scanning Electron

In this research, the pollen micromorphology of nine species belonging to Honorius, Loncomelos, Ornithogalum and Stellarioides are observed by LM (Light Microscopy), SEM (Scanning Electron Microscopy) and two species by TEM (Transmission Electron Microscopy). Lately, the phylogenetic studies have determined nineteen monophyletic genera in subfamily Ornithogaloideae (=tribe Ornithogaleae). Our results show that the pollen grains characters such as shape, size, exine ornamentation on equatorial surface, sulcus margin exine ornamentation, sulcus membrane ornamentation and lumina number on exine surface are varied among all studied genera. The dendrogram of palynological characters analyzed on LM and SEM observation by MVSP (Multi Variate Statistical Package) software partly supports the monophyletic genera. According to the obtained palynological dendrogram, Loncomelos arcuatum and Ornithogalum sintenisii are placed in one subtype. Based on the sporoderm structure (exine thickness and the endexine type), L. arcuatum differs from O. sintenisii. Finally, the palynological characters can be useful for clarifying the taxonomic relationship in this subfamily.

Pollen morphology of Sabinaria magnifica (Cryosophileae, Coryphoideae, Arecaceae)

Phytotaxa ◽  
2015 ◽  
Vol 207 (1) ◽  
pp. 135 ◽  
Author(s):  
Giovanni Raul Bogota ◽  
Carina Hoorn ◽  
Wim Star ◽  
Rob Langelaan ◽  
Hannah Banks ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Light Microscopy ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
The Other ◽  
Transmission Electron ◽  
Palm Species ◽  
Scanning Electron

Sabinaria magnifica is so far the only known species in the recently discovered tropical palm genus Sabinaria (Arecaceae). Here we present a complete description of the pollen morphology of this palm species based on light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). We also made SEM-based comparisons of Sabinaria with other genera within the tribe Cryosophileae. Pollen grains of Sabinaria magnifica resemble the other genera in the heteropolar, slightly asymmetric monads, and the monosulcate and tectate exine with perforate surface. Nevertheless, there are some clear differences with Thrinax, Chelyocarpus and Cryosophila in terms of aperture and exine. S. magnifica differs from its closest relative, Itaya amicorum, in the exine structure. This study shows that a combination of microscope techniques is essential for the identification of different genera within the Cryosophileae and may also be a necessary when working with other palynologically less distinct palm genera. 

scholarly journals Pollen morphology of Begonia L. (Begoniaceae) in Nepal

2012 ◽  
Vol 19 (2) ◽  
pp. 191-200 ◽  
Author(s):  
Sangeeta Rajbhandary ◽  
Mark Hughes ◽  
Krishna K. Shrestha
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Pollen Analysis ◽  
Pollen Morphology ◽  
Exine Ornamentation ◽  
Plant Taxon ◽  
Distinguishing Character ◽  
Scanning Electron

The pollen morphology of 28 Begonia species of Nepal has been examined by scanning electron microscopy (SEM). Comparative pollen analysis was made based on size, shape in polar and equatorial views, P/E ratio, aperture, and exine ornamentation. In this study, four types of pollen ornamentation morphology have been identified. Among Nepalese Begonia, B. roxburghii (section Sphenanthera) has the smallest pollen (11.2- 12.8 × 6.4-7.0 ?m) and B. flagellaris (section Diploclinium) has the largest pollen (24.3- 30.6 × 11.4-12.0 ?m). Presence of margo in the pollen ornamentation is a distinguishing character that separates Begonia section Platycentrum from all other sections of Nepalese Begonia. DOI: http://dx.doi.org/10.3329/bjpt.v19i2.13134 Bangladesh J. Plant Taxon. 19(2): 191-200, 2012 (December)

scholarly journals Distinguishing Oblacinska sour cherry clones (Prunus cerasus L.) by pollen morphology

Genetika ◽  
2020 ◽  
Vol 52 (1) ◽  
pp. 187-198 ◽  
Author(s):  
Dragan Nikolic ◽  
Dragan Milatovic ◽  
Aleksandar Radovic ◽  
Jugoslav Trajkovic
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Sour Cherry ◽  
Prunus Cerasus ◽  
Morphological Parameters ◽  
Exine Ornamentation ◽  
Pollen Shape ◽  
Scanning Electron

Morphology and ultrastructure of pollen grains were studied in 13 Obla?inska sour cherry clones in three years using scanning electron microscopy (SEM). All studied clones had isopolar, radially symmetric and tricolpate pollen grains. Length and width of pollen grains varied in a range of 50.03-55.97 ?m and 25.16-28.37 ?m respectively. Pollen shape in all the studied clones was identified as prolate. The smallest colpus length was found in the clone 8 (43.73 ?m), and the highest in the clone 3 (49.16 ?m). The highest colpus and mesocolpium width had the clone 3 (1.73 ?m; 14.87 ?m) and the lowest had the clone 7 (1.46 ?m; 13.78 ?m). All studied clones had striate exine ornamentation. Number of ridges per 100 ?m2 of the exine surface was the highest in the clone 11 (16.7) and lowest in the clone 2 (14.1). Ridge and furrow width ranged from 0.46 to 0.61 ?m and from 0.45 to 0.59 ?m, respectively. The clones have been classified into three clusters based on all studied properties. Pollen grains examination by SEM indicated that several morphological parameters (pollen size and exine characteristics) can be used to distinguish Obla?inska sour cherry clones.

The trichotomosulcate asparagoids: pollen morphology of Hemerocallidaceae in relation to systematics and pollination biology

2013 ◽  
Vol 26 (6) ◽  
pp. 393
Author(s):  
Carol A. Furness ◽  
John G. Conran ◽  
Thomas Gregory ◽  
Paula J. Rudall
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Pollen Morphology ◽  
Pollination Biology ◽  
Molecular Analyses ◽  
Moth Pollination ◽  
Transmission Electron ◽  
Pollen Surface ◽  
Scanning Electron

We examined pollen of 19 genera of Hemerocallidaceae by using scanning electron microscopy (SEM), and one genus (Dianella) by using transmission electron microscopy (TEM). Pollen was generally small in size, with a rounded triangular outline when hydrated, and a characteristic three-armed aperture, a distal trichotomosulcus. The pollen surface was finely sculptured and the exine was thin. Microreticulate pollen is a potential synapomorphy for several species of the ‘crown phormioid’ subclade recognised in molecular analyses. Perforate and fossulate pollen supports a relationship between several species of Dianella. Microrugulate pollen is more frequent in the johnsonioids than in the phormioids. Hemerocallis is distinguished by elongated monosulcate pollen, a relatively thick exine with a pronounced reticulate surface, and large globules of attached pollenkitt. We hypothesise that Hemerocallidaceae are ancestrally buzz-pollinated, and their pollen morphology is an adaptation to this pollination type. A reversal to butterfly or moth pollination occurred in Hemerocallis, with associated changes in pollen morphology.

scholarly journals 24A study on pollen morphology of the family Oleaceae Hoffmanns. & Link in Vietnam

2021 ◽  
Vol 63 (9) ◽  
pp. 19-24
Author(s):  
Hong Quang Bui ◽  
◽  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Morphological Features ◽  
Prolate Spheroidal ◽  
The Family ◽  
Scanning Electron ◽  
Sem Analyses

This paper uses scanning electron microscopy (SEM) analyses and light microscopy (LM) to study pollen grains of species of the family Oleaceae Hoffmanns. & Link distributed in Vietnam, including 23 species belonging to 6 genera of the family (Oleaceae). Pollen grains of all species (Oleaceae) in Vietnam are isopolar, radial, 3- prolate pollen grains small size, with two types: subprolate type (Jasminum and Olea) and prolate spheroidal type (Jasminum, Fraxinus, Ligustrum, Osmanthus, and Chengiodendron). The surface of the pollen grains in most species is reticulate. These are important morphological features to classify the Nhai family through pollen morphology

scholarly journals Morphology of pollen in Ferula genus (Apiaceae)

PhytoKeys ◽  
2021 ◽  
Vol 179 ◽  
pp. 111-128
Author(s):  
Birol Başer ◽  
Mehmet Sagıroglu ◽  
Gulden Dogan ◽  
Hayri Duman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Pollen Morphology ◽  
Morphological Characteristics ◽  
Pollen Grains ◽  
Polar Axis ◽  
Average Linkage ◽  
Pollen Shape ◽  
First Time ◽  
Scanning Electron

In this study, the pollen morphology of all Ferula species distributed throughout the country of Turkey was studied with light and scanning electron microscopy for the first time. The aim is to identify the pollen morphological characteristics of 23 Ferula species. The pollen is radially symmetrical, isopolar and tricolporate in all examined species. Pollen grains are prolate and perprolate with the polar axis ranging from 22.28 to 40.47 µm and the equatorial axis from 13.70 to 18.73 µm. Their polar shapes are triangular, triangular to subtriangular and circular to subcircular. Several types of exine ornamentations have been observed on pollen through the use of scanning electron microscopy. The dendrogram constructed by using Average Linkage of the examined data revealed two main groups. It was determined that some pollen characteristics are more useful for classification than others. In particular, P, E, the ratio of P/E (pollen shape) and ornamentation in the polar and equatorial views are the most valuable variables for discrimination the Ferula species.

scholarly journals Taxonomical Investigation on Some Species of Genus Allium Based on the Pollen Morphology

2019 ◽  
pp. 1-10
Author(s):  
Mehdi Heidarian ◽  
Seyed Mohammad Mehdi Hamdi ◽  
Mohammad Mehdi Dehshiri ◽  
Taher Nejadsattari ◽  
Seyed Mohammad Masoumi
Keyword(s):  
Electron Microscopy ◽  
Pollen Morphology ◽  
Numerical Taxonomy ◽  
Morphological Characteristics ◽  
Pollen Grains ◽  
Pollen Grain ◽  
Wall Structure ◽  
Transmission Electron ◽  
Pollen Characters ◽  
Exine Ornamentation

Aims: The aim of this research was to investigate the morphological characteristics of the pollen grain of some species of genus Allium. Methodology: The pollen grains were examined by using Light Microscopy (LM), Scanning Electron Microscopy (SEM) and the pollen grains of one species under Transmission Electron Microscopy (TEM). Results: The pollen grains were oblate and medium in shape and size. The pollen ornamentation of exine surface, exine ornamentation on sulcus edge, lumina number in the exine surface and the state of pollen grain apex in the examined species were different. Semitectate and columellate ectexine with discontinuous endexine were seen in the pollen wall structure (sporoderm). The dendrogram obtained from the pollen characters in SEM observations by using the numerical taxonomy system (NTSYS) software placed the studied species in two types. Conclusion: Our palynological dendrogram can be used for segregation the sections and subgenera taxonomical levels in the studied species of genus Allium and confirmed the phylogram of the recent phylogenetic research.

The Application of Scanning Electron Microscopy in the Investigation of Human Gastrointestinal Pathology

1973 ◽  
Vol 31 ◽  
pp. 430-431
Author(s):  
S. Siew
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Three Dimensional ◽  
Morphological Characteristics ◽  
Significant Advance ◽  
Gastrointestinal Pathology ◽  
Transmission Electron ◽  
Three Dimensional Configuration ◽  
Scanning Electron

A significant advance in our knowledge of gastrointestinal pathology has been achieved through endoscopy of the accessible portions of the alimentary tract. This procedure has allowed the evaluation of morphological characteristics of the mucosa by means of direct viewing in situ and through microscopy (light and transmission electron) of biopsies taken from selected areas. The importance of examination of the three dimensional configuration of the mucosal surface has been recognized, particularly in the assessment of the intestinal villi in cases of malabsorption, where it is recommended that the biopsies should be examined first by means of the dissecting microscope. Therefore, there is an obvious indication here for scanning electron microscopy, with its far greater potential.

The distribution, external morphology, and presumptive function of the surface microstructures of Gammarus pseudolimnaeus (Crustacea: Amphipoda), with emphasis on the calceolus

1991 ◽  
Vol 69 (4) ◽  
pp. 853-865 ◽  
Author(s):  
A. Thomas Read ◽  
D. Dudley Williams
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Morphological Characteristics ◽  
Large Array ◽  
Transmission Electron ◽  
Gammarus Pseudolimnaeus ◽  
Limited Degree ◽  
Surface Microstructures ◽  
Cuticular Surface ◽  
Scanning Electron

The entire cuticular surface of Gammarus pseudolimnaeus Bousfield was examined by means of scanning electron microscopy and, to a limited degree, transmission electron microscopy and light microscopy. A large array of microstructures was found, including calceoli, microtrich arrays, aesthetascs, sensory spines (cone- and club-shaped), pores, type A pegs, setae (simple, hamate, serrate, serrulate, fin type, plumoserrate, plumose, cuspidate, and simple flat), and apical spine teeth. The morphological characteristics, location, and pattern of distribution of each structure are described. Possible functions of each structure are presented.

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