TITLE:
The Anatomical Structure of Leaves and Thorns Plants Astragalus pterocephalus Bunge, Growing in Uzbekistan
AUTHORS:
Manzura A. Agzamova, Guljan M. Duschanova, Hasan A. Rakhmatov, Abdulaziz A. Janibekov
KEYWORDS:
Astragalus pterocephalus, Anatomy, Leaf, Thorn, Amankutan Mountains Samarkand
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.11 No.4,
April
26,
2020
ABSTRACT: The results of a study conducted by light microscopy
of the anatomical structure of the leaf and thorns of Astragalus pterocephalus growing in the natural habitat of the Amankutan
Mountains of the Samarkand region (Uzbekistan)
are presented. The following diagnostic features were identified: leaf—isolateral-palisade type of mesophyll leaf;
thick-walled outer walls of the epidermis;
the outline of epidermal cells is rectilinear, the projection is polygonal;
amphystomatic leaves; submerged numerous stomata of hemiparacitic and
anomocytic type; chlorophyll-bearing palisade and spongy parenchyma; closed
collateral type of vascular bundles and more sclerified, due to sclerenchymal
cells. Thorn—parenchymal-beam type of structure; thin-walled outer walls of the epidermis;
under the epidermis is a lamellar collenchyma; closed collateral type of
vascular bundles and more sclerified, due to sclerenchymal cells. The complex of the above features reflects the species specificity of the
structure of the leaf and spines. Identified and described features that can be
used in the taxonomy of the studied tribes and can serve to identify plant
materials.