Potato varieties resistance study to wart Synchytrium endobioticum (Schilbersky) Percival and late blight Phytophthora infenstans (Mont) de Bary

anglais. Received: June 6th, 2022 ; Accepted: December 15th, 2022 ; Published: December 16th, 2022 ; Correspondence: rita.asakaviciute@lammc.lt

anglais. The results of research on the selection of potato varieties and breeding material fromInstitute for potato study NAAS and Institute of Agriculture of Carpathian Region NAAS arepresented in this paper.There were selected 12 potato varieties of Ukrainian breeding with high resistance level: ‘Aria’,‘Glazurna’, ‘Knyagynya’, ‘Zheran’, ‘Zhytnytsia’, ‘Podolyanka’, ‘Skarbnytsia’, ‘Slavyanka’,‘Chervona Ruta’, ‘Fantasy’, ‘Schedryk’ and ‘Chortytsia’ (1.2–2.4 points (R1) and 2 varieties(‘Dyvo’ and ‘Povin’ - 3.4 and 3.0 points (R2)) by the research results for potato assessment towart in 2020–2021 by the results of field and laboratory studies for determining Ukrainianbreeding potato varieties resistance to wart Synchytrium endobioticum (Schilb) Perc. There werechosen 6 varieties with relatively high resistance degree to late blight Phytophthora infenstans(Mont) de Bary (7.2–8.5 points): ‘Aria’, ‘Dyvo’, ‘Zhytnytsia’, ‘Knyagynia’, ‘Podolyanka’ and‘Slavyanka’ by the choice. The evaluation results allow to put them into the State Register ofplant varieties suitable for dissemination in Ukraine. These potato varieties recommend forimplementation in potato disease sources and usage as a parent form for crossing as sources ofpotato resistance to wart and late blight.