The Characteristics of Flowering in in situ and ex situ Conditions of Species of Pyrus L. Genus on North-Eastern Part of the Greater Caucasus

This article represents the comparatively research results the characteristics of flowering in cultural
and natural conditions of 5 wild pears species which were spreading in northeastern part of the Great-
er Caucasus. As a result of investigation there has been identified that, species of pear studied on re-
productive phase are normally flowering and producing fruit in cultural and natural conditions and
the narrowing of their areal are based on anthropogenic factors than their biological characteristics.