Assessment of prospects for the use of species of the Pyrus L. genus in the north-eastern part of the Greater Caucasus

The paper presents an assessment of the prospects for the use of five species of the Pyrus L. genus: Pyrus communis L., P. caucasica Fed., P. georgica Kuth., P. vsevolodii Heideman, P. salicifolia Pall. in cultivation on the territory of the Greater Caucasus. These are the species that are most common in the north-eastern part of the Greater Caucasus (Azerbaijan). The evaluation of the studied species was carried out in terms of their viability in ex situ conditions. To assess the prospects for the introduction of trees and shrubs in ex situ conditions, the scale of E. O. Iskendarov was used. The work carried out made it possible to reveal that these plant species are divided into two groups under ex situ conditions. As a result, it was found that none of the species fell into the lower group. Group 1 of promising plants included 3 species ( P. salicifolia Pall., P. georgica Kuth., P. vsevolodii Heideman). The other 2 species are assigned to the 2nd group of promising plants.