TITLE:
Comparative Anatomical Study of the Stems and Leaflets of Tribulus longipetalous, T. pentandrus and T. terrestris (Zygophyllaceae)
AUTHORS:
Hatil Hashim Elkamali, Ahlam Salih Eltahir, Ibrahim Saeed Yousif, Ahmed Mohamed Haroun Khalid, Elneel Adam Elneel
KEYWORDS:
Anatomy, Stem, Leaflets, Tribulus longipetalous, T. pentandrus, T. terrestris
JOURNAL NAME:
Open Access Library Journal,
Vol.3 No.8,
August
15,
2016
ABSTRACT: In this study the anatomical characters of the stems and leaflets of T.
longipetalous Viv., T.
pentandrus Benth. and T. terrestris L. were compared to
assist as a relevant source of information and contribute towards the standards
to dispose the quality and identity of these plants to avoid adulterations.
Transverse sections of the stems and leaf lets of the three species were done
using wax method technique. The anatomical structures of the three studied
species are very similar. The stems are formed of one layer epidermis,
parenchymatous cortex, pericyclic fibers above the collateral vascular bundles,
primary and secondary xylems and phloems, narrow medullary rays and wide
parenchymatous pih. The densities of the epidermal hairs in the stems are found
to be larger in T. pentandrus followed by T. longipetalous and lastly T. terrestris. There are sclrenchymatous fibres in the pith of T. longipetalous and T. pentandrus but not in T. terrestris. The leaflets are
dorsiventral, showing kranz structure and different types of hairs. The densities
of the epidermal hairs in the leaflets are found to be larger in T. longipetalous followed by T. pentandrus and lastly T. terrestris.