TY JOUR TI Scab (Venturia inaequalis (Cooke) G. Winter) lesion on some apple (Malus domestica Borkh.) varieties with Vf gene (Rvi 6) in Oryol region KW variety KW apple tree KW breeding KW scab KW resistance genes KW fungi race KW co-evolution KW Malus floribunda JO Agrarian Bulletin of the AU Dolzhikova, M.. AU Yanchuk, T.. AU Galasheva, A.M. AU Korneeva, S.. AU Pavlenko, A.. PY 2024 IS 24 PB Ural State Agrarian University