Leaf Epidermal Features in 14 Species of Vernonia.
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Date
2018
Authors
Nwakanma, N. M. C.
Adekoya, K. O.
Kadiri, A. B.
Oboh, B. O.
Journal Title
Journal ISSN
Volume Title
Publisher
Egyptian Society for Biological Sciences, Department of Entomology, Faculty of Sciences Ain Shams University.
Abstract
The objective of this study was to assess the leaf epidermal micro-morphology
in some Vernonia species in Nigeria. .In–situ morphological characterization
was carried out on 61 field samples consisting of 14 Vernonia species collected
from Nigeria. Light microscopic studies of the foliar epidermal micromorphology
were undertaken on the 14 Vernonia species from field collections
with a view to elucidating the taxonomic significance of the epidermal features.
The characters were analyzed to determine the variations which may be useful
in species identification. Qualitative and quantitative assessment of epidermal
characteristics revealed diagnostic features such as anomocytic stomatal type
found on amphistomatic and hypostomatic leaves. Mean stomata index ranged
from 1.06 % - 22.22 % in the genus. The epidermal cell shape was mostly
polygonal or sinuous on both surfaces or polygonal or sinuous on either
surface. Anticlinal wall pattern was straight or undulate on both surfaces or
straight/curved or undulate on either surface, as well as wavy or undulate on
either surface. Multicellular and other trichomes which manifested various
geometrical forms were also observed.
Description
Keywords
Genetic diversity , foliar , epidermal micromorphology , stomata , Vernonia
Citation
Nwakanma, N. M. C., Adekoya, K. O., Kadiri, A. B. and Oboh, B. O. (2018). Leaf Epidermal Features in 14 Species of Vernonia. Egyptian Academic Journal of Biological Sciences 9: 59 - 73