From multitude of value apple characters examined by the breeders during the process of creation of the new cultivars take part genetic rezistance of varieties to the most acquainted and dangerous criptogamic disease like apple scab [Venturia inaequalis (Cooke) Wint] (1, 3, 4, 7). This disease attacks the leaves and fruits, cousing sizable damages to the apple harvest from quantitave and qualitative point of view.  Qualitative losses can obtain 80%, and differentiation of the budds from the fruit for the next year harvest, because of sickening of folial apparatus may be intense diminished and apple trees pass to strict periodical fruitiness, character genetically deferned (5). Actualy there are 24 cultivars (Romus 1, Romus 2, Romus 3, Primula, Redfree, Prima, Coredana, Coredem, Reglindis, Pionier, Remo, Rewena, Sir Prise, Priam, Generos, Coredar, Coremodet, Florina, Coreal, Coredova, Corealor, Corejuno, Corelita, Coretard (2, 6), with maturity beging from the summer earliest tile the latestmatured with postharvest of fruit 190-210 days and ewen more, and that do not sprayed with fungicide against this malady.