Scanning electron microscopic screening of 20 medicinally important Asteroideae taxa.
Asteroideae
anatomical characterization
epidermis
stomata
subsidiary cells
Journal
Microscopy research and technique
ISSN: 1097-0029
Titre abrégé: Microsc Res Tech
Pays: United States
ID NLM: 9203012
Informations de publication
Date de publication:
Aug 2020
Aug 2020
Historique:
received:
13
11
2019
revised:
04
03
2020
accepted:
26
03
2020
pubmed:
7
5
2020
medline:
23
3
2021
entrez:
7
5
2020
Statut:
ppublish
Résumé
In the present study anatomical characterization of 20 medicinally important Asteroideae species were done under light and scanning electron microscopy. Variety of qualitative and quantitative anatomical characters like epidermal cells, stomata, guard cells, subsidiary cells, trichomes and oil droplets were observed. Generally pentagonal, polygonal, irregular or hexagonal, smooth, undulating thick walled epidermal cells were observed in studied species. In abaxial surface Thymophylla tenuiloba L. possessed the largest length of epidermal cell that is, 221.6 (156.6-286.6) μm whereas Bellis perenis L. showed the smallest length that is, 46.4 (32.6-60.2) μm. Average width of epidermal cells ranged from 57 (22-92) μm to 169 (127.9-210.1) μm. Cosmos sulphureus Cav. had smallest width while Thymophylla tenuiloba L. had the largest width. In adaxial surface Artemisia absinthium L. possessed the largest length of epidermal cell that is, 269 (165.1-372.9) μm whereas Bellis perenis L. showed the smallest length that is, 61.4 (42.6-80.2) μm. Average width of epidermal cells ranged from 50.8 (32.6-69) μm to 260 (116-202) μm. Thymophylla tenuiloba L. had smallest width while Dahlia pinnata Cav. had the largest width. Among stomatal characters anisocytic, anomocytic, and diacytic stomata were observed in selected species of Asteroideae. Nonglandular uniserate, multicellular, unbranched pointed tips with bulbous base trichomes were reported in some Asteroideae members while some possessed glandular, capitates mushroom like multicellular trichomes covered with tubercle papicles. Rounded, oval, triangular shaped oil droplets were observed in some species. It is concluded that qualitative and qualitative anatomical variations in trichomes, stomata and epidermal cells are of good taxonomic value for the Asteroideae species.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
988-1006Informations de copyright
© 2020 Wiley Periodicals, Inc.
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