Structure features of assimilative organs of the species Salsola leptoclada Gand. in the desert region of Uzbekistan

Abstract

The article presents the results of the morpho-anatomical structure of the assimilation organs of the species Salsola leptoclada Gand, which is widespread in the Kyzylkum desert region of Uzbekistan, and reveals the structural, diagnostic and adaptive features. It was found that the leaf of species Salsola leptoclada has long multicellular nodular trichomes from the base to the tip and the absence of trichomes in the cotyledons. It was established that in the cotyledon and leaf the epidermal cells have a straight multifaceted protrusion, the presence of paracytic and hemiparacytic stomata in the epidermis in the cotyledon, and in the leaf - anomacytic and hemiparacytic type. A dorsiventral (Aksiroid) type of cotyledon mesophyll was found, and in the leaf there was a kranz-centric (Salsoloid) and a kranz-ventrodorsal type. The microscopic analysis of biometric indicators and anatomical characteristics of the cotyledons and leaves of the studied species Salsola leptoclada established the relationship between halomorphic and xeromorphic characteristics of assimilating organs, which prevail in arid conditions. These identified anatomical characters are explained by the predominance of halomorphic characters in the cotyledon mesophyll of xeromorphic characters in the leaf mesophyll.