Yield and quality characteristics of three potato cultivars, that is Aster, Muza, and Ania, were examined in an experiment conducted in years 1999-2001. Total tuber yield, starch content, dry matter content, and vitamin C content were determined. Data analysis was based on multidimensional methods, that is interprofile analysis and cluster analysis. The levels of both the yield and component contents were different depending on the cultivar and growth conditions. It was confirmed by means of the profile lines of the examined cultivars, which had different courses in each year of study. Coefficients of similarity rc indicate that the profiles of the cultivars were not similar (comparisons were made between pairs). The most dissimilar were the profiles of Aster and Ania, influenced by the conditions of the 2000 growth season, as well as of Muza and Ania in the year 1999. Cluster analysis revealed that Muza and Ania formed one cluster (were the most similar) in the years 1999 and 2000, and Ania and Aster in the year 2001.

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