The paper presents the results of studying the inheritance of resistance against the pathogen Fusarium graminearum Schwabe in F1 of common winter wheat based on the analysis of 22 hybrid combinations obtained when crossing five varieties of common winter wheat and five sources of resistance to this disease. When cross-breeding maternal and parental forms of common winter wheat with different degrees of resistance to Fusarium head blight, we noted all of the types of dominance of resistance to the pathogen. For the period 2021-2023, a high degree of dominance was established in 13.6% of hybrid combinations: MIP Vyshyvanka / (BILINMEVEN-49 / Natalka) (2.1 (heterosis), 1.2 (heterosis), 2.7 (heterosis), respectively), (Donskoy prostor / Slavna) / MIP Vyshyvanka (0.9 (partial positive dominance), 2.1 (heterosis), 1.6 (heterosis), respectively), [(Mikon / ALMA) / Lehenda Myronivska] / Podolianka (1.3 (heterosis), 0.4 (intermediate inheritance) 2.2 (heterosis), respectively) when involving common winter wheat varieties Podolianka and MIP Vyshyvanka and donors of resistance against the Fusarium pathogen (BILINMEVEN-49 / Natalka, (Donskoy prostor / Slavna), [(Mikon / ALMA) / Lehenda Myronivska]) in crossing. Taking into account the indices of overdominance (heterosis) over three years of the research, the variety MIP Vyshyvanka should be used both as a maternal form and as a pollinator, but the variety Podolianka as a pollinator. For effective breeding work to create genotypes being resistant against Fusarium graminearum the most value was represented by hybrid combinations with overdominance (heterosis). The availability of breeding material and the infectious background of the pathogen make it possible to increase the efficiency of breeding process when creating resistant varieties of winter wheat
common winter wheat, variety, hybrid, resistance, phenotypic dominance, Fusarium graminearum Schwabe
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