Varieties of winter barley with group resistance to leaf diseases for the western forest-steppe

Abstract

Goal. Establish varieties of winter barley with high resistance to pathogens of foliar diseases in the conditions of the Western Forest Steppe of Ukraine. Metods. The research was conducted using field (assessment of the development of diseases on winter barley varieties), laboratory (identification of pathogens of winter barley), analytical and mathematical and statistical methods. Conclusions. Based on the materials of three-year studies, data on the field resistance of collection varieties of different ecological and geographical origins of foreign and domestic breeding to the most common foliar diseases of winter barley in the conditions of the Western Forest Steppe are presented. Among the researched collection of winter barley samples during 2020–2022, high resistance (7 points) against powdery mildew was found — 4 samples (43.7% of the total number of samples), 6 points — 16 samples. (50%), 5 points — 2 years. (6.2%); against rhynchosporiosis, respectively: 3 zr. (9.4%); 25 years (78.1%); 4 rooms (12.5%); against dark brown spotting: 8 zr. (25.0%); 20 years (12.5%). Varieties with high resistance to individual diseases and with group resistance have been identified. The following cultivars were resistant to rhynchosporiasis: Zherar (UKR), Sumo (FRA), Action (DEU). For variety samples: Dostoynyy (UKR), KVS Scala (DEU), Devyatyy val (UKR), Bureviy (UKR), Trudivnyk (UKR), Paladin Myronivskyy (UKR), Zherar (UKR), Camanehe (FRA), Action (DEU), Scarpia (DEU), Naomie (DEU), Highlight (DEU), Cartel (FRA), Maybrit (DEU) are characterized by high resistance to powdery mildew. And for variety samples: Dostoynyy (UKR), KVS Scala (DEU), Osnova (UKR), Zherar (UKR), Rosava (UKR), Sumo (FRA), Snihova koroleva (UKR), Action (DEU) is characterized by high resistance to dark — brown spots. Over the years of research, cultivars with high group resistance to three pathogens have been selected: rhynchosporiosis, dark brown spot and powdery mildew, namely Zherar (UKR), Action (DEU), Sumo (FRA), Dostoynyy (UKR), KVS Scala (DEU ). All variety samples with high group resistance were transferred to breeders, who will involve them in crossings to create new breeding material to increase the immunity of winter barley to rhynchosporiosis, dark brown spotting, and powdery mildew in the conditions of the Western Forest Steppe.