title: APPARENT LOSS OF VECTOR SPECIFICITY FOLLOWING DOUBLE INFECTION BY TWO STRAINS OF BARLEY YELLOW DWARF VIRUS.
mesh_terms: D002523:Edible Grain; D001467:Hordeum; D017793:Luteovirus; D010935:Plant Diseases; D010942:Plant Viruses; D012106:Research; D012680:Sensitivity and Specificity
keywords: EXPERIMENTAL LAB STUDY; GRAIN; PLANT VIRUSES