Revealing the resistance potential of soft winter wheat varieties of the V.M. Remeslo Myronivka Institute of Wheat selection to pathogens of wheat leaf diseases typical for the Right Bank Forest Steppe zone of Ukraine

Goal. To investigate the resistance potential of soft winter wheat varieties the V.M. Remeslo Myronivka Institute of Wheat selection of NAAS on artificial and provocative infectious backgrounds of the main pathogens wheat leaf diseases of the Right Bank Forest-Steppe zone of Ukraine. Methods laboratory, field, analytical. Results. Evaluation of resistance to the main causative agents of leaf rust, septoria leaf spot of wheat using artificial infectious backgrounds with a high level of virulence and to the causative agent of powdery mildew on a provocative natural infectious background was carried out for 33 varieties of soft winter wheat selection of the the V.M. Remeslo Myronivka Institute of Wheat selection of NAAS crafts. Varieties were resistant to modern populations of pathogens: to leaf rust — Podolyanka, Myronivska 27, Myronivska 65, Aurora Myronivska, Bilyava, Voloshkova, Demerta, Estafeta Myronivska, Zolotokolosa, Columbia, Myrych, MIP Valencia, MIP Viznaka, MIP Dnipryanka, MIP Lada, MIP Nika, MIP Fortuna, MIP Yuvileyna, Pivna, Slavna, Smuglyanka, Khazarka, Yavorina; to powdery mildew — Podolyanka, Myronivska 808, Myronivska 61, Myronivska 65, Bilyava, Demerta, Europe, Myrych, MIP Valencia, MIP Viznaka, MIP Knyazna, MIP Lada, MIP Feeriya, MIP Fortuna, Pivna, Slavna, Hazarka; to septoria leaf spot of wheat — Myronivska 808, Myronivska 61, Voloshkova, MIP Viznaka, MIP Knyazna, MIP Lada, MIP Feeriya, MIP Fortuna, Pivna, Slavna, Hazarka. Group resistance was shown by varieties: powdery mildew + leaf rust + septoria leaf spot of wheat — MIP Viznaka, Podolyanka, Myronivska 61, Voloshkova; powdery mildew + leaf rust — Podolyanka, Myronivskm 65, Bilyava, Demetra, Myrych, MIP Valensia, MIP Viznaka, MIP Lada, MIP Fortuna, Pivna, Slavna, Spasivka, Hazarka; powdery mildew + septoria leaf spot of wheat — Myronivska 808, Myroniska 61, MIP Viznaka. Conclusions. Testing wheat varieties on artificial infectious backgrounds with a high level of virulence of pathogens of leaf rust and septoria leaf spot of wheat and with a natural infectious background of powdery mildew makes it possible to determine the modern resistance potential of wheat varieties. Varieties with group resistance to pathogens were also identified.