Anatomy and stomatal micromorphology of Psophocarpus tetragonolobus (L.) DC. (Winged Bean)

Kamal Kumar. V¹ , ajalakshmi R²

Section:Research Paper, Product Type: Isroset-Journal
Vol.6 , Issue.1 , pp.233-239, Feb-2019

CrossRef-DOI:   https://doi.org/10.26438/ijsrbs/v6i1.233239

Online published on Feb 28, 2019

Copyright © Kamal Kumar. V, Rajalakshmi R . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Psophocarpus tetragonolobus (winged bean) belongs to the family Fabaceae. It is self-pollinated and growing in the tropical regions of the world. Present study investigated the anatomy of stem, node, petiole, leaf, root and stomatal micro- morphological characters of this species. Stem anatomy showed epidermis, cortical layers (collenchyma and chlorenchyma) schlerencymatous bundle sheath with conjoint, collateral vascular bundle and unilacunar node. One of the distinguishing features in leaf anatomy was the presence of sac like outgrowths filled with simple parenchyma and were usually seen opposite side to the midrib vascular bundle. In the petiole, vascular strands were cylindrical and arc shaped and in roots, four xylem and four phloem patches were present. Paracytic stomata were seen on both sides of the leaves. The stomatal index on adaxial and abaxial surface was 5.54-9.27% and 53.57-61.29% respectively. In general anatomical characteristics of P.tetragonolobus were used for the identification key of this species.

Key-Words / Index Term :
Psophocarpus tetragonolobus, stem, leaf, petiole, root, node, stomata, paracytic, adaxial, abaxial

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