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This paper presents the results of the adjustment of 18 modifications of culture medium based on MS medium composition – Murashige and Skoog (1962) for  in vitro  rhizogenesis of 10 varieties of domestic plum. There were used 4 nutrient media with a full amount of macro- and microelements – MS 1  with a different combination of phytohormones, 1 medium without hormones – MS c , 13 media – MS 2  with half the amount of macronutrients, differing in hormonal composition. It was found that the maximum number of rooted microshoots from 21.2 to 52.2 % was on MS 2–8  medium, from 11.2 to 43.1 % on MS 2–5 . The analysis showed that into the medium increases the percentage of microplants by 12-17 % comparing with the medium MS 2–5  and MS 2–7  without FA. The distinctiveness of nutrient media by the type of auxin (IAA, NAA, IBA) made it possible to clarify that IBA is the most optimal of the auxins, and the concentration of 1.7 mg/l is borderline for the growth reactions of plum varieties. It was revealed that  in vitro  root formation depends not only on the compositions of growth substances in the nutrient medium, but also on the genotype of the variety.

Adjustment of culture media to optimize in vitro rhizogenesis of domestic plums of various origins