title: Genetical studies of spontaneous sources of resistance to powdery mildew in barley.
mesh_terms: D002869:Chromosome Aberrations; D002875:Chromosomes; D003434:Crossing Over, Genetic; D002523:Edible Grain; D005796:Genes; D008040:Genetic Linkage; D005823:Genetics; D005838:Genotype; D001467:Hordeum; D009154:Mutation; D010641:Phenotype; D011995:Recombination, Genetic