Foliar micromorphology and its role in identification of the Apocynaceae taxa
| Autor: | Asad Ullah, Sunera, Inam Ullah, Zahoor Ul Haq, Usman Ali, Kalsoom Bashir, Aamir Sohail, Mehrina Asghar, Brekhna Gul |
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| Rok vydání: | 2019 |
| Předmět: |
Histology
Alstonia scholaris 02 engineering and technology Plant Epidermis 03 medical and health sciences 0302 clinical medicine Guard cell Botany Pakistan Carissa carandas Instrumentation Microscopy Thevetia biology Apocynaceae Epidermis (botany) fungi 030206 dentistry Trichomes 021001 nanoscience & nanotechnology biology.organism_classification Trichome Plant Leaves Medical Laboratory Technology Epidermal Cells Plant Stomata Microscopy Electron Scanning Anatomy 0210 nano-technology Plumeria rubra |
| Zdroj: | Microscopy research and techniqueREFERENCES. 83(7) |
| ISSN: | 1097-0029 |
| Popis: | In the present study, we evaluate the importance of foliar epidermal micromorphological characteristics of Apocyanaceae for accurate identification and classification. The species were collected from the University of Peshawar's main campus in the spring season to observe its qualitative and quantitative features. The length and width of guard cells, stomatal pore and subsidiary cells, trichomes, and crypts on both sides of the leaf were examined. Many species were observed to be hypostomatic. Plumeria rubra, Raulfia serpentine, Thevetia peruviana, Trachelospermum lucidum, Alstonia scholaris, and Catharanthus roseus demonstrated hypostomatic leaves. Nearly all the investigated species had anisocytic type of stomata only or in combination with other types of stomata on the upper and lower epidermis. Carissa carandas had anomocytic, anisocytic, and cyclocytic type of stomata on the upper epidermis, and the lower epidermis showed variations in stomatal type, such as anomocytic, stephanocytic, brachyparacytic, and hemiparacytic. Nerium oleander had no specific shape of stomata but showed stomatal crypts in which the stomata were enclosed inside many trichomes. The taxonomic key based on stomatal types, epidermal cells, stomatal index value, and statistical analysis, along with the variations in the epidermal cells, shows the link between the selected plants species, which will provide a baseline for future anatomical studies. This study highlights many undocumented micromorphological characteristics. The anatomical characteristics observed in this study will be helpful for taxonomic identification and species delimitation of the family Apocynaceae. |
| Databáze: | OpenAIRE |
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