DNA polymorphism and host range in the take-all fungus, Gaeumannomyces graminis

adn avena sativa avenas avoine centeno dna enfermedades de las plantas enfermedades fungosas filogenia fungal diseases gaeumannomyces graminis host range hosts hybridation hybridization maladie des plantes maladie fongique oats pathogens phylogenie phylogeny plant diseases polimorfismo polymorphism polymorphisme rflp ribosomas ribosome ribosomes rye secale cereale seigle taxonomia taxonomie taxonomy trigo triticum aestivum wheats