Reaction of selected potato varieties to Clavibacter sepedonicus infestation under changing weather conditions

Abstract The results of the studies carried out over last 50 years have not provided a clear answer to questions concerning interaction between Clavibacter sepedonicus (Cs), potato and environment. reason is insufficient knowledge biology causal agent ring rot, problems research methodology influence many environmental biotic factors on degree plant infestation. conducted in 2013–2016 Plant Breeding Acclimatization Institute – National Research concerned determination weather conditions, involved temperature Sielianinov hydrothermal coefficient development Cs bacteria stems progeny tubers, as well occurrence disease symptoms plants tubers eight varieties. It was found that genotype had greatest impact leaf tuber infestation, while conditions were less significant. correlation analysis indicate weight infected by increased statistically significantly with increases air soil temperature. On other hand, initial vegetation period did affect number infested Cs. In 4-year experiment, it shown how affected most cases, infestation caused decrease yield.