Abstract
The resistance of cherry, sweet cherry and pear varieties to bacterial canker was analyzed by using the method of arti-
 ficial contamination of unripe fruits. Two resistance groups were highlighted among the six analyzed cherry varieties:
 Uyfehertosh Fürthosh variety exercised the highest degree of resistance and Turgenevka exercised the lowest degree. Three
 groups of resistance were identified among the ten studied varieties of sweet cherries; the cultivar Lyubava Donetskaya turned out to be the most resistant, Gascinets proved to be the most affected. Four groups of resistance were distinguished among analyzed 14 pear varieties. The most resistant was Vilia variety and Kudesnitsa variety turned out to be the most affected.
 None of the examined crops varieties appears to be immune to bacterial canker. After artificial contamination of apples fruits
 (Belorusskoe sladkoe, Kovalenkovskoe and Nadzejny varieties) symptoms of the disease did not appear.
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