Holb, I.

Karaffa, Erzsébet Mónika

Karaffa, L.

Kövics, György

Váczy Kálmán, Zoltán

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 65Resistance to fungicides in Botrytis cinerea isolates from Eger wine district, Hungary  K. Z. Váczy1, I. Holb2, G. J. Kövics2, L. Karaffa3, E. Sándor 2  1Research Institute for Viticulture and Enology, Eger, Klyuktet, Hungary 2University of Debrecen, Centre for Agricultural Sciences, Faculty of Agriculture, Department of Plant Protection, Hungary 3University of Debrecen, Faculty of Science, Department of Microbiology and Biotechnology, Hungary e-mail: vaczy@szbki-eger.hu, holb@agr.unideb.hu, kovics@agr.unideb.hu, lkaraffa@delfin.unideb.hu, karaffa@agr.unideb.hu   Botrytis cinerea (teleomorph: Botryotinia fuckeliana) is a cosmopolitan ascomycetous fungus that causes grey mould on a great number of plants by infecting various tissues. In grapevine, the frequent occurrence of B. cinerea prior to harvesting results serious losses of fruits and deterioration of wine quality. B. cinerea has been shown to have several variable genetical and physiological traits. It is able to act as a saprophyte as well as a pathogen, and it has developed resistance to most of the fungicides used to control it. Studies on French and Chilean isolates revealed the presence of three intrapopulation: (1) transposa, having transposable elements Boty and Flipper, (2) Vacuma, having no transposable elements, and (3) boty containing transposable element Boty alone. In France, the level of fungicide resistance differed significantly in transposa and in vacuma type populations. Forty isolates of grapevine berry infected by B. cinerea from various locations of the Eger wine district were collected. Individual strains were obtained by single-spore isolations. Vacuma and transposa type isolates were identified, and fungicide resistance was determined to benomyl, iprodione, fenhexamid and pyrimethanil. Enological and mycological relevance of the results will be discussed.       

Resistance to fungicides in Botrytis cinerea isolates from Eger wine district, Hungary

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