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Field occurrence of vinclozolin resistance in Monilinia fructicola
Author(s) -
PENROSE L. J.,
KOFFMANN W.,
NICHOLLS M. R.
Publication year - 1985
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1985.tb01354.x
Subject(s) - vinclozolin , monilinia fructicola , iprodione , procymidone , biology , fungicide , mycelium , inoculation , homothallism , spore , orchard , horticulture , botany , pesticide resistance , microbiology and biotechnology , pesticide , agronomy , mating type , biochemistry , gene
Strains of Monilinia fructicola resistant to vinclozolin were isolated from fruit affected by brown rot from an orchard where the fungicide had been used over four seasons. Resistant isolates were pathogenic to peach fruit, and resistance of one isolate was confirmed following dipping of inoculated fruit in fungicide suspensions. In culture, one of four resistant isolates was identical in colony morphology and sporulation to sensitive isolates from different geographic areas. The other resistant isolates produced dark mycelium on PDA and were slower growing. Vinclozolin‐resistant isolates were resistant in vitro to two other dicarboximide fungicides, iprodione and procymidone.