DROUGHT RESISTANCE OF PROMISING HYBRID FORMS OF COMMON PLUM
The article presents the results of studies of the drought resistance of hybrid forms of domestic plum, which are in the genetic collection NCFSCHVW. The aim of the study was to determine the physiological characteristics of the resistance to stress factors (drought) of hybrid forms of domestic plum and to identify the most drought-resistant forms under high-temperature stress. The physiological parameters were determined: water content, water-holding capacity of leaves and the release of electrolytes, which characterize the drought resistance of domestic plum hybrids. According to a complex of physiological indicators (a relatively high water content in the leaves, a low dry matter content and a low percentage of electrolyte release from plant cells during exposure to high temperatures), indicating a sufficiently high drought resistance, a hybrid form of plum 1-1-55 was identified.