Study of the Pyrus L. species of growth and development in the ex situ conditions of the northeast of the Great Caucasus

The article investigated the peculiarities of growth and development of Pyrus L. species in the northeastern part of the Greater Caucasus (Azerbaijan). The study found that there were no significant differences in cultural conditions compared to the natural conditions of the species involved in the study material. The study of the bioecological features of tree plants in Azerbaijan, both natural and cultural, is of great scientific and practical importance.