Quantitative dose-response of Prunus fruit decay fungi to gamma irradiation

摘要: Abstract The dose response of selected Prunus fruit decay fungi to inactivation their colony-forming potential by gamma irradiation was studied in tests here reported. Included were Monilinia fructicola (Wint.) Honey; Botrytis cinerea Pers.; Cladosporium sp.; Penicillium expansum Link; Rhizopus stolonifer (Ehr. ex Fr.) Vuill.; and Gilbertella persicaria (Eddy) Hesseltine. Dose curves established for spores vitro. “End point” studies provided an experimental estimation the doses required permanently inactivate all fungus cells a high proportion lesions. Thus, colony 50, 80, 90 per cent lethality approximated populations ca. 10 106 species irradiated Similar data obtained most destructive after incubation host. Application radiation as tool estimating size naturally occurring lesions terms “spore equivalents” suggested results with inoculated fruits. A delay colonization caused insufficient may provide satisfactory control fruits having short physiological life.