Identification of powdery mildew and leaf rust resistance genes in common wheat (Triticum aestivum L. em. Thell.) cultivars grown in Bulgaria and Russia

blé disease resistance erysiphe graminis mildews mildiou oidium mildiu puccinia polysora puccinia recondita resistencia a la enfermedad rouille roya rusts résistance aux maladies trigo triticum aestivum variedades varieties variété wheats