Evaluation of parents and crosses of F2 generation in the winter wheat breeding programme

altura calidad crop yield cultivos de invierno culture d'hiver descendance disease resistance erysiphe graminis espigueo f2 hybrids ga gibberelline grain granos hauteur heading height hybridation hybride f2 hybridization padres parent parents peso plant population poids progenie progeny puccinia graminis puccinia striiformis quality rendement des cultures rendimiento de cultivos resistencia a la enfermedad triticum aestivum variedades varieties weight winter crops