EN
Sensitivity of 7 sugar beet collection materials to Cercospora beticola Sacc. was investigated in a laboratory test in vitro. For comparison 7 sugar beet varieties from different breeding (Balladyna, Janosik, Marcepan, Nevenka, Picasso, Schubert, Tunika) were included to this experiment. A tolerant variety Georgina was used as control. 2 populations of beets with reduced sensitivity to C. beticola (187800 and 187795) and 1 variety of sugar beet (Nevenka) were found in this investigation. No resistant beets were noticed. The results were compared with the symptoms of disease in a field test. Some of these genotypes can be used in research and breeding programs.