EN
The identification concerned 71 isolates obtained from potato tubers which were identified on the basis of morphological features as Fusarium sambucinum, and 46 isolates from wheat, barley rye, triticale and potato. Which were identified as F. culmorum. Molecular analyses using SCARPCR revealed incorrect identification of 5 isolates obtained from potato: two were earlier identified as F. sambucinum and 3 as F. culmorum. This indicates the fact that F. culmorum and F. sambucinum occurring on potato can be mistaken while using a traditional microscopic identification. The research confirmed the usefulness of species-specific primers in diagnostics of plant pathogens. It was stated that for obtaining fully reliable results, it is advisable to use, besides a microscopic method, a molecular analysis.