PJB-2025-1553
Leaf architectural studies on the genus Corchorus L. (Grewioideae-Malvaceae) from Pakistan
Komal Shoa, Rubina Abid and Sana Riaz
Abstract
The genus Corchorus comprises ca. 74 species of worldwide distribution in the tropical and subtropical regions of the world. In Pakistan it is represented by eight species including six wild species viz., C. aestuans L., C. depressus L., C. olitorius L., C. pseudo- olitorius Islam & Zaid., C. tridens L., C. trilocularis L., C. fascicularis Lam. and two species namely C. capsularis L. and C. olitorius L. are cultivated as commercial crops. Corchorus species are characterized by hairy petioles, simple, alternate, unlobed leaves with or without awns at the leaf base, mostly symmetrical sometimes slightly to completely asymmetrical, ovate, lanceolate, elliptic, oblong, margin serrate. In addition, the study of leaf venation showed that 1° leaf venation was acrodromous and 2° leaf venation was craspedodromous. Further, leaf epidermal studies in Corchorus manifested paracytic stomatal type followed by anisocytic, tetracytic, anomocytic types and dominant unicellular, attenuate trichomes. Most of the aspects studied were significant to delimit the species consequently an artificial key was designed. The data was also analyzed numerically to perceive the relationship among the species of the genus from Pakistan. This study was conducted to develop an understanding of leaf architecture, venation patterns, and epidermal characters of the genus Corchorus from Pakistan. The data was also found useful as an aid to taxonomic delimitation of the genus Corchorus from Pakistan
To Cite this article:
Shoa, K., R. Abid and S. Riaz. 2025. Leaf architectural studies on the genus Corchorus L. (Grewioideae-Malvaceae) from Pakistan. Pak. J. Bot., 57(6): DOI: http://dx.doi.org/10.30848/PJB2025-6(36)
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