scholarly journals Pollen morphology of the Polish species of the family Caprifoliaceae. Part 1

2014 ◽  
Vol 66 (2) ◽  
pp. 133-142 ◽  
Author(s):  
Irmina Maciejewska
Keyword(s):  
Pollen Morphology ◽  
Pollen Grains ◽  
Polar Axis ◽  
The Family

This paper contains results of studies on pollen morphology of 5 Polish species of the family <em>Caprifoliaceae</em> (genera <em>Sambucus</em> and <em>Viburnum</em>). The pollen has been examined with LM and SEM. Besides detailed descriptions, series of microphotographs are presented. All examined species have small to medium-sized grains, with prolate polar axis, reticulate ornamentation (at least in mesocolpia), relatively long ectoapertures and with often visible equatorial bridges. Extent of fusion of capita in muri allows to divide observed pollen grains into 2 subtypes: one for examined Sambucus species and for<em> V. opulus</em>, the second for <em>V. lantana</em>.

scholarly journals Pollen morphology and variability of species from the genus Rubus L. (Rosaceae) alien and invasive in Poland

Webbia ◽  
2021 ◽  
Vol 76 (1) ◽  
pp. 109-121
Author(s):  
Kacper Lechowicz ◽  
Jan Bocianowski ◽  
Dorota Wrońska-Pilarek
Keyword(s):  
Alien Species ◽  
Pollen Morphology ◽  
Pollen Viability ◽  
Intraspecific Variability ◽  
Pollen Grains ◽  
Polar Axis ◽  
Exine Ornamentation ◽  
The Family ◽  
Rubus Species

Rubus L. is one of the most species-rich and most taxonomically challenging genera in the family Rosaceae. The aim of this study was to investigate pollen morphology and the ranges of inter- and intraspecific variability of the studied Rubus alien species, as well as verify the taxonomic usefulness of these traits in distinguishing studied taxa from this genus. We analysed six quantitative pollen characteristics and the following qualitative ones: exine ornamentation, pollen outline and shape. The study was conducted on 24 samples of six alien Rubus species found in Poland. 720 pollen grains were measured in total. The most important pollen features included exine ornamentation and length of the polar axis (P). In the conducted studies there were no features of pollen indicating “invasiveness”. The results of our research fill the gap in knowledge on pollen structure in Rubus species alien to Poland and Europe. They may constitute a foundation for further research on the reproduction of these species (e.g. pollen viability and fertility), thus facilitating identification of features determining their expansive character.

Comparative morphological, anatomical, micromorphological, and palynological studies on the genera Opopanax and Crenosciadium (Apiaceae)

Phytotaxa ◽  
2018 ◽  
Vol 372 (1) ◽  
pp. 35 ◽  
Author(s):  
ÖZLEM ÇETIN ◽  
MUSTAFA ÇELIK
Keyword(s):  
Cross Sections ◽  
Mediterranean Region ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Molecular Data ◽  
Monotypic Genus ◽  
Western Asia ◽  
The Family ◽  
Surface Ornamentation ◽  
Fruit Surface

In the present study, morphological, micromorphological, palynological and anatomical characteristics of the genera Opopanax and Crenosciadium are reviewed and compared. The genus Opopanax is distributed in southern Europe, the Mediterranean region and Western Asia, and it is represented by three species in Turkey. Crenosciadium is a poorly known monotypic genus from Turkey, recently treated as synonym in Opopanax. Expanded descriptions, phenology, geographic distributions, and images of habitus of Opopanax and Crenosciadium are given. The differences between the two genera are discussed. The pollen morphology of Opopanax and Crenosciadium is studied by SEM and LM. The palynological results confirmed the stenopalynous characteristic of the family Apiaceae, and revealed that the pollen grains of both genera are perprolate in shape. Also fruit surface ornamentation of both genera is typically striate, and epidermal cells are polygonal or elongated in one direction. Cross-sections of mature fruits are examined and a detailed anatomical description is presented. Mericarp shape and width are very useful characters for discrimination between Opopanax and Crenosciadium; mericarp ribs are also very significant characteristics to discriminate both genera. Our findings, together with previous molecular data, clearly indicate that Crenosciadium differs considerably from Opopanax, and therefore it should be accepted at genus rank.

scholarly journals Pollen characters as taxonomic evidence in some species of Dipsacaceae from Iran

2017 ◽  
Vol 24 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Ebadi-Nahari Mostafa ◽  
Nikzat-Siahkolaee Sedigheh ◽  
Eftekharian Rosa
Keyword(s):  
Pollen Morphology ◽  
Pollen Grains ◽  
Pollen Grain ◽  
Pollen Type ◽  
Upgma Tree ◽  
Pollen Characters ◽  
Exine Ornamentation ◽  
The Family ◽  
The World ◽  
Plant Taxon

Pollen morphology of nine species representing four genera: Cephalaria Schrad, Dipsacus L., Pterocephalus Vaill. and Scabiosa L. of the family Dipsacaceae in Iran has been investigated by means of scanning electron microscopy (SEM). The results showed that pollen grains were triporate and tricolpate. The pollen type of Scabiosa rotata Bieb. (tri- and tetraporate) is the first report in the world. The sizes of pollen grains fall into the classification group magna (pollen grain diameter 50–100 μm). Pollen shapes vary from preoblate to prolate and their polar views were triangulate and lobate. The exine ornamentation varies from gemmate in S. rotata to spinulate in the rest studied species. Species of Scabiosa have been dispersed in UPGMA tree that this confirmed the previous studies about taxonomic problems and species complexity in this genus. These results show the transfer of the some Scabisoa species to Lomelosia Raf. based on palynological characters. Pollen morphology of the family is helpful at the generic and specific level.Bangladesh J. Plant Taxon. 24(2): 129–136, 2017 (December)

scholarly journals Pollen morphology of the Balkan-Carpathian endemic Campanula lingulata Waldst. & Kit. (Campanulaceae)

2016 ◽  
pp. 75-82
Author(s):  
Marina Macukanovic-Jocic ◽  
Snezana Jaric
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Endemic Species ◽  
Pollen Morphology ◽  
Average Length ◽  
Pollen Grains ◽  
Polar Axis ◽  
First Time ◽  
Scanning Electron

Palynomorphological characteristics of Campanula lingulata, the Balkan-Carpathian endemic species growing in Serbia, have been investigated using light microscopy and scanning electron microscopy for the first time, in order to provide some information helpful for a better understanding of the taxonomic position of this species within the genus, as well as to contribute to the pollen atlas of Serbian apiflora. The pollen grains are radially symmetrical, isopolar, 3-zonoporate and medium-sized monads oblate-sphaeroidal in shape. Mean of the polar axis (P) is 27.6?1.9 ?m, while the average length of the equatorial axis (E) is 28.8?1.6 ?m. The apertures are operculate. The sculpturing pattern of the exine is microre?ticulate-microechinatae. The exine surface is covered with evenly distributed supratectal spinules of variable length and sparse granules. The longest supratectal spinules are 0.64?0.05 ?m in length and the smallest sculptural elements are less than 0.2 ?m high. The microechinae density per sample area of 5 ?m x 5 ?m averages 17.4?2.4.

Pollen morphology of Myrtaceae from the south-west Pacific area

1956 ◽  
Vol 4 (1) ◽  
pp. 13 ◽  
Author(s):  
KM Pike
Keyword(s):  
Pollen Morphology ◽  
Pollen Grains ◽  
South American ◽  
The South ◽  
African Species ◽  
West Pacific ◽  
South West ◽  
The Family ◽  
Characteristic Features ◽  
Pacific Area

The pollen grains of 300 species of 71 genera of the family Myrtaceae have been examined and their characteristic features summarized in tabular form. The investigation has been mainly concerned with those species that occur in the south-west, Pacific area, particularly Australia. For comparative purposes, the pollen morphology of a limited number of South American and two South African species has been included. The significance of pollen characters for distinguishing genera and species within the family is discussed. In some instances pollen morphology has provided additional evidence for the classification of certain species as suggested by taxonomists. A provisional key to pollen grains of the genera examined has been included.

scholarly journals Pollen morphology of Malvaceae genera from Saudi Arabia and its taxonomic significance

2021 ◽  
pp. 725-742
Author(s):  
Kadry Abdel khalik ◽  
Suad Al- Ruzayza ◽  
Abdullah Assiri ◽  
Ahmed Elkordy
Keyword(s):  
Saudi Arabia ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Polar Axis ◽  
Morphological Characters ◽  
Average Height ◽  
Prolate Spheroidal ◽  
Oblate Spheroidal ◽  
Equatorial Diameter ◽  
Pollen Shape

Pollen morphology of 20 species belong to seven genera (Abutilon, Althaea, Hibiscus, Malva, Pavonia, Senra and Sida) of Malvaceae from Saudi Arabia were studied by using light microscope (LM) and scanning electron microscope (SEM). Quantitative and qualitative pollen morphological characters which vary among investigated taxa are found in the pollen polarity, symmetry, size, shape, polar axis, equatorial diameter, P/E ratio, average height and width of spine, aperature character and spine index. The pollen grains vary from spheroidal, prolate spheroidal, oblate spheroidal to suboblate. All taxa were characterized by relatively large to medium sized pollen grains, numerous pores scattered irregularly all over the grain, and echinate sculpturing. Sida ovata is the largest size pollen grain (138.95) µm. On the other hand, Malva parviflora showed the smallest pollen size (52.28 µm). The average height and width of spine varied greatly among studied taxa. The highest spines (20.65µm) found in Sida ovata, while the shortest (3.19 µm) was found in Abutilon pannosum. Results of the pollen shape, size, and exine sculpture characters offered useful data for evaluating the taxonomy of Malvaceae both on subgeneric and sectional levels. A key for the identification of the investigated taxa based on pollen grains characters is also provided

Pollen morphology of Stellaria (Caryophyllaceae) from China and its systematic implications

Phytotaxa ◽  
2020 ◽  
Vol 429 (2) ◽  
pp. 91-119 ◽  
Author(s):  
HAN-FENG XU ◽  
YU-HUI JIANG ◽  
ZHI-WEI SU ◽  
ZHONG-HUI MA
Keyword(s):  
Pollen Morphology ◽  
Pollen Grains ◽  
Morphological Features ◽  
Pollen Types ◽  
The Family ◽  
Pore Number

Pollen morphology of 46 species and 11 varieties representing the 5 currently recognized sections and 10 series of Stellaria from China was investigated. Pollen grains of Stellaria are radially symmetrical, apolar, small or medium in diameter, pantoporate, spheroidal or spheroidal-polyhedral and have 8–22 pores with prominent or sunken pore membrane. The ornamentation is microechinate-punctate, microechinate-perforate or microechinate-punctate-perforate. 8 pollen types are recognized, and significant differences in shape, size, pore number and ornamentation are found. Arenaria and Cerastium were proved to be related to Stellaria, whereas Myosoton was suggested to be merged into Stellaria. The pollen morphological features indicated Stellaria was in a middle evolutionary position of the family Caryophyllaceae.

scholarly journals Pollen Morphology and Variability of Abies alba Mill. Genotypes from South-Western Poland

Forests ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1125
Author(s):  
Dorota Wrońska-Pilarek ◽  
Monika Dering ◽  
Jan Bocianowski ◽  
Kacper Lechowicz ◽  
Wojciech Kowalkowski ◽  
...  
Keyword(s):  
Pollen Morphology ◽  
Geographical Location ◽  
Abies Alba ◽  
Intraspecific Variability ◽  
Pollen Grains ◽  
Polar Axis ◽  
Seed Orchard ◽  
Diagnostic Features ◽  
Pollen Shape ◽  
First Time

The objective of this study was to investigate pollen morphology and ranges of intraspecific variability of Abies alba Mill. Pollen grains were collected from nine clonal seed orchards of A. alba in the Sudety Mountains, (South-Western Poland). At each seed orchard, 4–6 grafts were selected. Each individual (graft) was represented by 30 pollen grains and 1440 pollen grains were measured totally. Eight quantitative and four qualitative features of pollen grains were analysed. The diagnostic features of pollen grains for the studied species were: Exine surface of pollen corpus (cappa and leptoma) and sacci, the length of the polar axis (P), pollen shape (P/E ratio), and a new trait—saccus shape (A/B ratio — saccus width (A) to his length (B)). Pollen features made possible to differentiate seven individual genotypes (samples). To our knowledge, this is the first time that the intraspecific and interindividual variability of pollen grains of A. alba were investigated. The most different were the pollen grains from samples—genotypes 13 (Bystrzyca Kłodzka) and 18 (Jugów), and also (although to a lesser extent) genotypes—11 (Kamienna Góra), 30, 31 (Jugów), and 44 (Szklarska Poręba). No significant relationships were observed between the pollen grain traits and the geographical location of the collection sites.

scholarly journals Pollen morphology and its systematic implication on some species of Artemisia L. from Gilgit-Baltistan Pakistan

2019 ◽  
Vol 26 (2) ◽  
pp. 157-168 ◽  
Author(s):  
Adil Hussain ◽  
Daniel Potter ◽  
Muhammad Qasim Hayat ◽  
Sumaira Sahreen ◽  
Syed Ali Imran Bokhari
Keyword(s):  
Pollen Morphology ◽  
Pollen Grains ◽  
Polar View ◽  
The Family ◽  
Artemisia Species ◽  
Taxonomic Marker ◽  
Micromorphological Characters ◽  
Gilgit Baltistan ◽  
Systematic Implication ◽  
Scanning Electron

This study was accomplished to scrutinize the pollen morphology of 15 species of the genus Artemisia of the family Asteraceae from Gilgit-Baltistan region of Pakistan by means of scanning electron microscopy (SEM). Results revealed pollen grains of Artemisia species with tricolporate shape, and characterized by globular symmetry (ellipsoid ball shaped from equatorial side and three lobed rounds from polar view) with few exceptions. Additionally, the pollens are marked with reduced spinules on their surfaces which are diagnostic character for the genus Artemisia. In this study, seven micromorphological characters of pollen grains of 15 Artemisia species viz. shape of pollen, arrangement of spinules, exine sculpture, spinules base, equatorial width and polar length, were employed to construct a dendrogram following the consequential cluster analyses. In the dentrogram, four groups within the studied Artemisia species have been recognized. The pollen morphology of Artemisia could be a good taxonomic marker to cope with its taxonomic delimitations in combination with other floral and molecular attributes.

scholarly journals Pollen Morphology of Herbaceous Peonies with Different Ploidy Levels

2016 ◽  
Vol 141 (3) ◽  
pp. 275-284 ◽  
Author(s):  
Lihong Hao ◽  
Hui Ma ◽  
Jaime A. Teixeira da Silva ◽  
XiaoNan Yu
Keyword(s):  
Pollen Morphology ◽  
Pollen Grains ◽  
Polar View ◽  
Polar Axis ◽  
Hybrid Breeding ◽  
Ploidy Levels ◽  
Herbaceous Peony ◽  
Group I ◽  
Surface Ornamentation ◽  
Axis Length

The pollen morphology of 26 cultivars of herbaceous peony (Paeonia L.) was examined by scanning electron microscopy (SEM). Pollen grains of the cultivars were mostly subprolate to perprolate, tricolporate, or ellipsoidal in equatorial view, but rounded-trifid in polar view. The poles of pollen grains were mainly flat when viewed in cross-section and only a few appeared to have a circular or arc shape. In addition, the surface of the pollen grains was psilate, and the muri were partly or fully protuberant with a reticulate surface sculpture. However, the shapes and sizes of pollen grains as well as surface ornamentation varied significantly among cultivars with different chromosome numbers. The pollen grains from diploid cultivars were regular and full, and the reticulation holes were evenly distributed, while most of the pollen grains from triploid cultivars were empty flat shells with some heteromorphic pollen whose surface ornamentation was mostly rugulate-reticulate exine. The pollen grains from tetraploid cultivars were the largest although pollen morphology and surface ornamentation differed between Athena and Cream Delight. Six indices [polar axis length (P), equator axis length (E), P/E, pollen perforation diameter (D), ridge width (W), and D/W] were used in Q cluster analysis, which divided the 26 cultivars into three groups. Group I included eight diploid, four triploid, and one tetraploid cultivar. Group II included 12 triploid cultivars with complex genetic backgrounds. Group III included only one tetraploid cultivar Cream Delight. This work may provide an important palynological basis for studying taxonomy and hybrid breeding of herbaceous peony cultivars.

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