Abstract
The use of a system of fundamental and applied knowledge in the field of biological resources including endemic plant species listed in the regional Red Books of the North Caucasus will allow us to determine the mechanisms of their adaptation in extreme mountain conditions. In this regard it is necessary to monitor wild species of Rhododendron caucasicum Pall. in natural ecosystems and the prospects of their practical application as BAS. The research was carried out during the period of mass flowering of plants. It has been established that the Caucasian rhododendron grows on mountain forest-meadow soils is part of the grass- rhododendron and blueberry- rhododendron communities. The analysis of the chemical composition showed a high content of BAS in the leaves: catechins-0.34-0.61, flavonols-1.15-2.23 %, ascorbic acid-15.0-19.0 %, anthocyanins 50.1-68.3 mg%. A high content of tannins was found in the stems - 12-16 %. Due to its high decorative value throughout the growing season, its rich chemical composition, this species can be a valuable biological resource for use as an ornamental, medicinal, ethereal plant, tannin-bearing plant.
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