Development of the source material resistant to the sunflower rhizopus pathogen

Information about the problem of deriving and developing sunflower forms resistant to Rhizopus Ehrenb. fungi is presented. The most effective methods of infection for the artificial inoculation of sunflower with pathogen are described. Opportunity to increase the sunflower resistance to Rhizopus and methods of selection of the source material resistant to this pathogen are shown.