Characterization of the Resistance to Powdery Mildew and Leaf Rust Carried by the Bread Wheat Cultivar Victo

Leaf rust and powdery mildew are two important foliar diseases in wheat. A recombinant inbred line (RIL) population, obtained by crossing bread wheat cultivars (‘Victo’ ‘Spada’), was evaluated for resistance to the pathogens at seedling stage. Upon developing a genetic map of 8726 SNP loci, linkage analysis identified three Quantitative Trait Loci (QTLs), with ‘Victo’ contributing resistant alleles all loci. One major QTL (QPm.gb-7A) detected response Blumeria graminis on chromosome 7A, which explained 90% phenotypic variation (PV). The co-positional relationship known (Pm) loci suggested that new source T. aestivum. Two QTLs were Puccinia triticina: gene 5D (QLr.gb-5D), explaining total PV about 59%, minor 2B (QLr.gb-2B). positional observed between QLr.gb-5D Lr1 gene, but polymorphisms found cloned corresponding allele, suggesting could represent functional allele. Lastly, upon anchoring aestivum reference genome, candidate genes hypothesized basis annotation silico expression analysis.