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The varieties which showed high resistance and resistance to pathogens of powdery mildew, dark-brown spot and dwarf rust are: Dokaz, Parnas, Etiket, Hadar, Obolon’, Edem (Ukraine), Eunova (Austria), STN 115 (Poland), Aspen (Czech Republic), Bojos, Hanka (Germany). On a provocative background, as high resistance and resistance characterized the varieties that are protected by certain genes: Adonis, Barke, Bojos, Class, Danuta, Breemar, Madeira (Germany), Aspen (Czech Republic), Eunova (Austria), Josefin (France), Prestige (England). It was found that the high efficiency against the population of the pathogen are showing recessive genes mlo: mlo9, mlo11 and combination of genes: mlo + Mla13 + Ml (La), mlo + Mla12, mlo + Mla1. The variety Eunova that is highly resistant against powdery mildew showed also resistance to dark brown leaf spot and dwarf rust. The varieties Barke, Bojos, Aspen and Breemar showed resistance to dwarf rust. Selected sources and donor of disease resistance are involved in hybridization to create varieties of spring barley resistant against diseases.