The aim of this study was to determine the response of potato cultivars to Clavibacter sepedonicus (Cs) infection in a field experiment. The research focused on the infection in a latent form as it is a risk for unnoticed spread. A total of 18 cultivars were tested in the years 2013–2016. Symptoms of the disease were observed on the leaves during growth and in tubers after harvest and after storage. The infection incidence was determined by microscopic observation of leaf and tuber samples stained by the IFAS method. A diverse response of potato cultivars to Cs infection was found. The lowest number of asymptomatic infected plants was found in cultivars ‘Vineta’, ‘Bila’ and ‘Irga’. As for cultivar ‘Stasia’, the entire tuber yield was latently infected by Cs. A low or medium concentration of Cs cells in leaves did not change significantly or increased depending on the potato cultivar. A higher incidence of tubers with disease symptoms was found after the storage period. In eight of the cultivars tested, the level of tuber infection by Cs confirmed microscopically after harvest was significantly correlated with the occurrence of disease symptoms in tubers after the storage period.

这项研究的目的是确定马铃薯品种对细枝杆菌的反应（CS）现场实验中的感染。该研究以潜在形式的感染为重点，因为这种感染有可能被忽视。2013-2016年间共测试了18个品种。在生长过程中的叶子上以及收获后和储存后的块茎中均观察到该病的症状。通过显微镜观察IFAS方法染色的叶和块茎样品确定感染发生率。发现马铃薯品种对Cs感染有多种反应。在品种“ Vineta”，“ Bila”和“ Irga”中发现的无症状感染植物最少。至于“ Stasia”品种，整个块茎产量都受到Cs的潜在感染。根据马铃薯品种的不同，叶片中低或中等浓度的Cs细胞不会发生明显变化或增加。贮藏期后发现具有疾病症状的块茎发生率较高。在测试的八个品种中，收获后在显微镜下确认的Cs块茎感染水平与储藏期后块茎中疾病症状的发生显着相关。