engleski

Sympatric Subpopulations of Botrytis cinerea Pers.:Fr. in Strawberries and Grapevine and their connection to Resistance to Dichlofluanid

During survey in Croatia in 2002, samples of strawberry and grapevine naturally infected with Botrytis cinerea were taken. The 37 isolates were isolated and their sensitivity to dichlofluanid (fenilsulfamid) was tested by mycelial growth assay. The three phenotypes of B.cinerea can be distinguished according to their response toward dichlofluanid and their EC50 and CMI values. The sensitive phenotype has EC50 1-3 ppm and CMI 6-10 ppm ; the phenotype with low level of resistance has EC50 3-10 ppm and CMI > 100 ppm and higher resistant phenotype has EC50 10-30 ppm and CMI > 100 ppm. Based on the content of transposable elements the subpopulations Transposa and Vacuma were found among collected isolates. The Transposa strains were prevalent among isolates originated from grapevine bunches. Also, the isolates having only the transposon Boty or only the transposon Flipper were found among isolates from strawberry.

Botrytis; Sympatric subpopulations; Dichlofluanid; Strawberry; Grapevine

nije evidentirano