Pollen morphology and wall structure of Neotropical species of Herreria and Clara (Asparagaceae-Agavoideae) and its taxonomic implications

Lopes, Rosana Conrado; Andreata, Regina Helena Potsch; Cartaxo-Pinto, Simone; Trovó, Marcelo; Gonçalves-Esteves, Vânia

doi:10.1007/s00606-012-0699-0

Cited by 10 publications

(4 citation statements)

References 15 publications

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“…Similarly, Ashfaq et al (), Bahadur et al (), Butt et al (), Kosenko (), Sufyan et al (), Ullah, Zafar, Ahmad, Dilbar, et al () investigated pollen of various taxa, using LM and SEM techniques and reported that the pollen morphological characteristics were of important characters for the taxonomic identifications of species and genera in different plant families. The LM and SEM study show variation between the species with special emphasis on exine ornamentation, which has a significant role to support the taxonomy of problematic and closely related taxa (Carrijo et al, ; Lopes, Andreata, Cartaxo‐Pinto, Trovó, & Gonçalves‐Esteves, ; Nurit‐Silva & De Fátima Agra, ). The SEM has proven invaluable for observations of the surface morphology of plant material (Rashid, Zafar, Ahmad, Khan, et al, ;Rashid, Zafar, Ahmad, Malik, et al, ; Shah, Ahmad, Zafar, Malik, et al, ; Shah, Ahmad, Zafar, Razzaq, et al, ; Ullah, Zafar, Ahmad, Shah, et al, ; Ullah, Zafar, Ahmad, Sultana, et al, ) primarily due to the improved depth of field and high resolution, which are inaccessible with the LM.…”

Section: Discussionmentioning

confidence: 99%

Palyno‐anatomical studies of monocot taxa and its taxonomic implications using light and scanning electron microscopy

Bahadur

Ahmad

Zafar

et al. 2018

Microscopy Res & Technique

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Palyno‐anatomical study of monocots taxa using Light and Scanning Electron Microscopy (SEM) was first time conducted with a view to evaluating their taxonomic significance. Studied plants were collected from different eco‐climatic zones of Pakistan ranges from tropical, sub‐tropical, and moist habitats. The aim of this study is to use palyno‐anatomical features for the correct identification, systematic comparison, and investigation to elucidate the taxonomic significance of these features, which are useful to taxonomists for identifying monocot taxa. A signification variation was observed in quantitative and qualitative characters by using the standard protocol of light microscopy (LM) and SEM. Epidermal cell length varied from maximum in Allium griffthianum (480 ± 35.9) μm at the adaxial surface to minimum in Canna indica (33.6 ± 8.53) μm on abaxial surface. Maximum exine thickness was observed in Canna indica (4.46) μm and minimum in Allium grifthianum (0.8) μm. Variation was observed in shape and exine ornamentation of the pollen, shape of the epidermal cell, number, size, and type of stomata, guard cell shape, and anticlinal wall pattern. Based on these palyno‐anatomical features a taxonomic key was developed, which help in the discrimination of studied taxa. In conclusion, LM and SEM pollen and epidermal morphology is explanatory, significant, and can be of special interest for the plant taxonomist in the correct identification of monocots taxa.

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Section: Discussionmentioning

confidence: 99%

Palyno‐anatomical studies of monocot taxa and its taxonomic implications using light and scanning electron microscopy

Bahadur

Ahmad

Zafar

et al. 2018

Microscopy Res & Technique

View full text Add to dashboard Cite

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“…The use of LM and SEM shows variations between the taxa with special emphasis on their exine ornamentation which has an important role to support the systematics of closely related and problematic species (Lopes, Andreata, Trovó, & Gonçalves‐Esteves , ). The use of SEM can be helpful to investigate the pollen micro‐morphological characters of the plant's species to evaluate their taxonomic importance and to be used for delimitation and separation of the species of the section (Nurit‐Silva & De Fátima Agra, 2011).…”

Section: Discussionmentioning

confidence: 99%

Identification of monocot flora using pollen features through scanning electron microscopy

Bahadur

Ahmad

Mir

et al. 2018

Microscopy Res & Technique

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Pollen used to track structural and functional evolution in plants as well as to investigate the problems relative to plant classification. Pollen characters including ornamentation, shape, apertural pattern, pollen symmetry, colpus length, width, and margins used to detect the similarities and dissimilarities between genera and also species of the same genus. In this study pollen features of 20 monocot species belonging to 15 genera of the Amaryllidaceae, Asparagaceae, Iridaceae, Ixioliriaceae, Liliaceae, and Xanthorrhoeaceae were studied using scanning electron microscopy (SEM) and light microscopy (LM). In this study two species that is Zephyranthes citrina and Tulbaghia violacea were reported for the first time from Pakistan. Pollen grains were visualized with LM. Non-acetolyzed and acetolyzed pollen were examined using SEM. A taxonomic key was developed to highlight the variation in pollen features in order to make their systematic application for correct species identification.

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“…The pollen viability assessment is crucial to ensure fertility, to evaluate the germination rate of pollen grains under certain conditions, and to evaluate pollen grains dispersal rate. Non-viable pollen grains refers to their inability to grow, live, and germinate [ 81 ]. A total of 25 slides of pollen grains were prepared for the light microscopic study to determine the pollen viability.…”

Section: Methodsmentioning

confidence: 99%

Palyno-Morphological Characteristics as a Systematic Approach in the Identification of Halophytic Poaceae Species from a Saline Environment

Nazish

Althobaiti

2022

Plants

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Pollen morphology of 12 salt-tolerant grasses (Calamagrostis pseudophragmites, Cenchrus biflorus, Cenchrus ciliaris, Cenchrus pennisetiformis, Cymbopogon jwarancusa, Dactyloctenium aegyptium, Echinochloa colona, Echinochloa crus-galli, Saccharum griffithii, Saccharum ravennae, Saccharum spontaneum, and Urochloa ramosa) from the Salt Range was studied using scanning electron microscopy (SEM) and light microscopy (LM). The main aim was the elucidation of taxonomic significance of pollen morphology, which might be useful for taxonomists in the identification of halophytic Poaceae taxa. The described pollen morphology is a good source of taxonomic characteristics that can help in species and genera differentiation. The investigated variations in the pollen micromorphological features and exploration of new palynological traits support and strengthen the systematics of Poaceae. The pollen shape of all studied species was sub-spheroidal, and exine ornamentation includes microechinate-areolate (11 spp.) and microechinate (1 spp.). Two types of pollen apertures were reported, i.e., monoporate (11 spp.) and diporate (Cenchrus pennisetiformis). The annulus was found in all species while operculum was observed only in three species. The univariate and multivariate analyses were used to analyze the quantitative data. The highest pollen viability values (%) depicted the adaptability of Poaceae taxa in the salt region. Overall, the pollen characteristics in polar and equatorial view, apertures, annulus, operculum, and surface ornamentation of pollen grains of the family Poaceae are of great taxonomic significance for the species identification.

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Pollen morphology and wall structure of Neotropical species of Herreria and Clara (Asparagaceae-Agavoideae) and its taxonomic implications

Cited by 10 publications

References 15 publications

Palyno‐anatomical studies of monocot taxa and its taxonomic implications using light and scanning electron microscopy

Palyno‐anatomical studies of monocot taxa and its taxonomic implications using light and scanning electron microscopy

Identification of monocot flora using pollen features through scanning electron microscopy

Palyno-Morphological Characteristics as a Systematic Approach in the Identification of Halophytic Poaceae Species from a Saline Environment

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