Selection of Cultivar-rootstock Combinations of Diploid Plum (Prunus rossica Erem.) for Arid Conditions in Southern Russia

Background: Plum diploid is a new species for the conditions of Volgograd region Russia, not previously grown. There are large number varieties and rootstocks that need to be studied in relation growing conditions. Methods: The research was carried out 2020-2022. Drought resistance heat were determined by laboratory method. To account these indicators, water content leaf, deficit water-holding capacity leaves determined. Productivity fruit quality weight Statistical analysis standard Microsoft Excel 2013 software package. Result: study productivity variety-rootstock combinations has shown it significantly influenced by, addition varietal characteristics, external environmental factors, also rootstock on which variety grafted. affects strength growth, time entry into fruiting, characteristics fruits, productivity. highest observed Sarmatka VVA-1 (21.5 kg/tree), smallest Kuban Comet cherry plum (10 kg/tree).