Inaperturate pollen diversity in the arborescent taxa ofKarimnagar district, Telangana State, India

Kailas, Jangam Ganga; Ramakrishna, H.; Prabhaker, R.

doi:10.18805/ijare.v0iof.11008

Cited by 2 publications

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“…Taxonomists studied pollen morphology as a tool in the identification and classification of Asteraceae and for its taxonomic value (Anar et al, 2022; Ayaz et al, 2020; Gonçalves‐Esteves et al, 2022; Khan et al, 2021; Ulukuş, 2019; Ulukuş & Tugay, 2020). Pollen morphology is not only playing an effective role in systematic value but, they are also helpful for taxonomic delimitation, which is associated with Asteraceous taxa (Kailas et al, 2016). The Asterales pollen‐morphometric characters were contributing to the morphological disparity among the Asteraceous taxa, which separates closely related taxa (Jardine et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Palyno‐taxonomic approach through light and scanning electron microscopy for the identification of herbaceous Asteraceae species from Sikaram Mountain Pak‐Afghan border

Ali

Zafar

Ahmad

et al. 2023

Microscopy Res & Technique

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Due to the diverse and rich taxa, Asteraceae needs to explore from the untouched area. In this study, the pollen study was intended to assess the taxonomic value for Asteraceous taxa growing on the Sikaram Mountain Pak‐Afghan border. Both microscopic techniques (LM and SEM) play a significant role in the identification and classification of herbaceous species of Asteraceae for their taxonomic and systematic implication. Pollen was observed and measured for the 15 species of Asteraceae. For investigated taxa 15 pollen characters with size, shape, polar view, pollen type, aperture orientation, and exine sculpturing in the eurypalynous pollen. Consequently, the pollen grains are usually Tricolporate, triangular to circular in polar view, while, the shape of pollen varies from subulate, oblate, and prolate along with prolate to spheroidal whereas, sculpturing also varies from Scabrate to micro reticulate, echino‐perforate, Scabrate to echinate, echinate to granulate and echinate were observed. Similarly, among the quantitative data minimum values of polar and equatorial were 15.8 ± 0.74 μm in Filago pyramidata and 17.85 ± 0.39 μm in Heteropappus altaicus was measured respectively, while; the length of the spine with the least value of 2.45 ± 0.31 μm in Hertia intermedia and highest with 7.55 ± 0.31 μm was observed in Cirsium wallichii. The Exine thickness is a minimum of 1.70 ± 0.35 μm in Launaea nudicaulis and a maximum of 5.65 ± 3.59 μm in Cirssium vulgare. In addition, the highest pollen fertility (87%) in Centaurea iberica while the highest pollen sterility (32%) was recorded in Cirsium verutum. Furthermore, clustering via UPGMA, PCA, and PCoA analysis was performed for the separation of closely related taxa. It is concluded from this research work that palynological study has a crucial role in taxonomic, pure, and applied sciences. This study can be further authenticated and improved by a Phylogenetic study based on chloroplast DNA analysis & whole genome sequencing.Research Highlights Pollen ultrastructure among 15 Asteraceous taxa. Micromorphological attributes measured via LM and SEM. Exine sculpture elements patterns provide accurate identification. Taxonomic keys were developed for its systematics implications.

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Section: Introductionmentioning

confidence: 99%

Palyno‐taxonomic approach through light and scanning electron microscopy for the identification of herbaceous Asteraceae species from Sikaram Mountain Pak‐Afghan border

Ali

Zafar

Ahmad

et al. 2023

Microscopy Res & Technique

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“…(Myrtaceae) and Eucalyptus L' Hér. (Myrtaceae) (Kailas et al,. 2016), and in Schleichera oleosa (Lour.)…”

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Pollen heteromorphism in Schleichera Lour. (Sapindaceae), observed in surface soil samples from central India

Quamar¹,

Thakur²,

Singh³

et al. 2021

Acta Palaeobotanica

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Angiosperms display striking variation of pollen morphological features within and between populations of the same species, as well as within individual plants. We describe and illustrate variation of pollen aperture number, which is called pollen heteromorphism, in Schleichera Lour. (Sapindaceae) from surface soil samples collected from central India, based on combined observations from light microscopy (LM) and confocal laser scanning microscopy (CLSM). Tri-zono-parasyncolporoidate pollen grains are, in general, known to occur in Schleichera Lour., but occasional tetra-zono-parasyncolporoidate pollen is also recorded, for the first time, from Chhattisgarh State, central India. Changes in ploidy level (diploidy/polyploidy), chromosome number, the C-value of DNA, completion of meiosis, as well as environmental factors and/or pollination ecology could be driving the occurrence of pollen heteromorphism. The present study could provide insights into the phylogeny and systematics, and has implications for pollen preservation as well.

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Inaperturate pollen diversity in the arborescent taxa ofKarimnagar district, Telangana State, India

Cited by 2 publications

References 1 publication

Palyno‐taxonomic approach through light and scanning electron microscopy for the identification of herbaceous Asteraceae species from Sikaram Mountain Pak‐Afghan border

Palyno‐taxonomic approach through light and scanning electron microscopy for the identification of herbaceous Asteraceae species from Sikaram Mountain Pak‐Afghan border

Pollen heteromorphism in Schleichera Lour. (Sapindaceae), observed in surface soil samples from central India

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