Journal
PHYTOPATHOLOGY
Volume 94, Issue 9, Pages 924-931Publisher
AMER PHYTOPATHOLOGICAL SOC
DOI: 10.1094/PHYTO.2004.94.9.924
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The effect of volatiles from cv. Isabella (Vitis labrusca) on the growth of Botrytis cinerea was tested in vitro and in situ, in the latter case on 'Roditis' grapes (V vinifera), at various temperatures. The goal of the research was to determine whether the volatiles emitted by Isabella grapes could be effective biocontrol agents of Botn'tis cinerea. The closed Mariotte system was used as a bioassay method to analyze quantitatively the biological action of these volatiles on fungal growth and disease development. The in vitro experiments revealed the inhibitory action of the Isabella volatiles on the sporulation and sclerotia formation of the fun.-us, as well as the stimulating action of the Roditis volatiles on the sporulation of the fungus. The in situ study confirmed the antifungal action of the Isabella volatiles as they reduced the inoculum and pathogenicity of B. cinerea. The antibiotic action was more pronounced at 21 degreesC. The study indicates that Isabella volatiles act as biocontrol agents of B. cinerea.
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