Leaf epidermis of juvenile and immature individuals of Ferula tadshikorum Pimenov introduced in the Tashkent Botanical Garden
УДК 582.893.6:581.4(575.1-25)
Abstract
The leaf epidermis was studied in individuals of different ages (juvenile plants of 1st year, immature plants of 1st year and 2nd years of life) Ferula tadshikorum of the family Apiaceae, grown in the conditions of the Tashkent Botanical Garden. The leaves are amphistomatic in the studied individuals of different ages. Plants are characterized by the presence of three types of stomata: anomocytic, hemiparacytic and paracytic, which are simultaneously present on both leaf surfaces. The anomocytic type of stomata is the dominant type. Diagnostic signs of the studied individual’s leaves of different ages are the number of epidermal cells and stomata per unit area, the size of cells and stomata, as well as indicators of the stomatal index. Immature plants 2nd years of life have the highest indicator in terms of the number of stomata and epidermal cells per 1 mm2 on the adaxial side of the leaf. The outlines of the anticlinal walls of the epidermal cells of the leaf on both abaxial and adaxial surfaces in all individuals are rectilinearly rounded. The conducted research shows that despite the new growing conditions, ancestral mesophilic signs remain in plants at the initial stages of development (juvenile individuals), however, already in the second year of vegetation, the appearance of xeromorphic signs is observed in immature plants 2nd years.
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