alexa Comparative Morphology of the Leaf Epidermis in Six Citrus Species and its Biosystematic Importance | OMICS International | Abstract
ISSN: 2167-0412

Medicinal & Aromatic Plants
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Research Article

Comparative Morphology of the Leaf Epidermis in Six Citrus Species and its Biosystematic Importance

Inyama CN1*, Osuoha VUN2, Mbagwu FN1 and Duru CM3
1Department of Plant Science and Biotechnology, Imo State University, Owerri, Nigeria
2Department of Biology, Alvan Ikoku Federal College of Education, Owerri, Nigeria
3Department of Biotechnology, Federal University of Technology, Owerri, Nigeria
Corresponding Author : Inyama CN
Department of Plant Science and Biotechnology
Imo State University, Owerri, Nigeria
Tel: 2348063969508
E-mail: [email protected]
Received February 27, 2015; Accepted June 03, 2015; Published June 08, 2015
Citation: Inyama CN, Osuoha VUN, Mbagwu FN, Duru CM (2015) Comparative Morphology of the Leaf Epidermis in Six Citrus Species and its Biosystematic Importance. Med Aromat Plants 4:194. doi:10.4172/2167-0412.1000194
Copyright: © 2015 Inyama CN, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Studies on comparative morphology of the leaf epidermis in six Citrus species- C. sinensis, C. limon, C. aurantifolia, C. reticulata, C. paradisi and C. maxima were carried out to ascertain the systematic importance of epidermal features in classification of these taxa. The epidermal carpet shows no appendages or subsidiary cells. The six species studied are hypostomatic with anomocytic type of stomata. Contiguous, mega stomata and special sheath cells are present in some species and could be of taxonomic and ecological potential. There are contiguous stomata in C. sinensis, C. limon, C. aurantifolia and C. maxima while lacking in C. reticulata and C. paradisi. The mega stomata are present in C. sinensis and C. limon but lacking in other species. The sheath cells are present in C. sinensis, C. limon, C. paradisi and C. maxima in the upper epidermis, and in C. limon, C. aurantifolia and C. reticulata in the lower epidermis. In the leaf epidermal carpet architecture there is a consistent variation among the species of citrus studied each exhibiting its own character and some with remote characters ranging from rectangular, cuboidal, triangular, pentagonal, hexagonal, pyramidal and trapezial in the upper epidermis while in the lower epidermis C. reticulata, C. paradisi and C. maxima distinguished themselves from others. The biosystematic implications of these findings have been discussed in the light of current literature.

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