Inheritance of Resistance to Leaf Rust by Combining Different Genetic Control Systems for the Trait

Resistance to leaf rust is one of the crucial factors in successful wheat production. The disease causes significant yield losses and reduces grain quality. Research related to resistance inheritance is helping to identify genetic factors that provide resistance to leaf rust. This allows breeders to create new wheat varieties with increased resistance to the disease. Using the material of F2 hybrid populations created by crossing parental components contrasting in leaf rust resistance, the patterns of inheritance of this trait were studied, depending on the combination of various genetic systems for resistance control in a single genotype. The genetic analysis identified the number of genes that control this trait and the types of their interaction. The possibility of obtaining positive transgressions for resistance to leaf rust, depending on the contrast of the parental pairs involved in crossing, was shown. It is assumed that the cytoplasm influences the effect of inheritance of resistance to leaf rust.