TITLE:
Comparative Study of the Anatomical Structure of Some Vegetative Organs Allium caspium (pall.) M. Bieb. and Allium tschimganicum B. Fedtsch. Ex Popov Growing in Natural Conditions of Uzbekistan
AUTHORS:
Akida T. Abdullaeva, Nargiza K. Rakhimova, Guljan M. Duschanova, Eldor E. Temirov
KEYWORDS:
Anatomy, Stem, Pedicel, Allium caspium, Allium tschimganicum, Samarkand Region, Tashkent Region, Uzbekistan
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.11 No.9,
September
18,
2020
ABSTRACT: The results of a comparative study of the structure
of some vegetative organs of A. caspium and A. tschimganicum growing in
natural conditions in Uzbekistan are presented for the first time. During the
study of the desert representative A. caspium,
the following diagnostic, structural features were revealed: ribbing of the
peduncle and pedicel; thickening of the outer wall of the epidermis and wavy
folding of the cuticle of the parenchymal-bundle type of structure; deep submergence of stomata: extensive core: thinness of the crustal parenchyma, the
presence of lactic acid in it; the presence of a highly sclerified sclerinchymal ring
between the crustal parenchyma and the central cylinder: the vastness of the
core and the presence of hydrocytic cells
in it, as well as the similarity of the structure of the stem and
pedicel. In this species, a predominance of xeromorphic characters was noted,
due to a tendency indicating xerophilization and adaptation to desert conditions. In A. tschimganicum,
the following mesomorphic diagnostic structural features, opposite to the
desert one, were also revealed: roundness of the stem and pedicel, dense folding of the cuticle surface, the presence of
lactates in the crustal parenchyma, weak thickening of the crustal parenchyma,
and the presence of a weakly sclerized sclerenchymal ring in the central color parenchyma: parenchymal-bundle type of structure,
weak thickening of the outer wall of the epidermis and slightly waviness of the
cuticle surface, the presence of lactic acid in the crustal parenchyma. Weak
submergence of stomata, large-cell crustal parenchyma, extensive, large-cell,
thin-walled, poorly sclerified central
cylinder, also similarity to the structure of the stem with pedicel, but the
presence of a cavity in the stem. The predominance of mesomorphic traits in
this endemic species indicated more favorable mountain
humid growing conditions were noted.