Choice of resistance sources of potato to wart Synchytrium endobioticum (Schilbersky) percival

The researches result for evaluation and choice of potato breeding material resistant to wart received from Institute for potato study National Academy of Agrarian Sciences and it’s Polissian research division. This material received from different parent forms crossing combi-nations. The mark resistant to common pathotype of wart causative agent received 230 hybrides 244 potato samples from testing (97,4%). 6 samples were defeated by disease causative agent and rejected. Hydrobiological analysis of potato resistance to wart showed the option of cros-sing parent forms resistant x resistant Vectar/Vzirets; Mag/Radomysl; Vectar/Radomysl; Dyna/Vygoda, Irbytsky/Podolia; 89.715с88 /Tiras and 05.2с32 / Granola allowed to receive 100% resistant to wart potato inherits. There were received 66,6 % resistant inherits in the option of crossing resistant X susceptible: 12.13-14 / Ф.11.12-84 resistant to wart and 57,1% resistant to wart 13.54-2 / Vzirets, The resistant varieties recommended for the improving in disease sour-ces and the following usage in breeding process as a potato resistance source to wart.