Assessment of Salicylic Acid Protective Role Against Botrytis Cinerea Induced Damage in Tomato, In Various Storage Periods

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Post-harvest pathogenic fungi are one of the most important causes of fruits decay.screenings were done in four districts produced tomato in Sharkia governorate and found that Botrytis cinerea was the most Prevailing fungi which the main causal agent of tomato grey mold disease.This study was conducted to evaluate the antifungal effect of different concentrations salicylic acid.Salicylic acid significantly reduced the linear growth of Botrytis cinerea in vitro especially high concentrations (6 g/l and 0.8g/l) in contact and fumigation methods respectively.The severity of artificially infected tomato increase gradually with increasing of storage periods (1, 2 and 3 weeks) while treatment with salicylic acid especially in high concentrations in either contact and fumigation lead to significant decrease of the severity of infection throughout all storage periods.Fumigation method was found to be more effective than contact method throughout both linear Botrytis cinerea growth and in vivo.The quality characteristics of tomato (soluble solids, acidity and vitamin C) was markedly affected in artificially inoculated tomato fruits comparing with the non-inoculated during different storage periods.This study has demonstrated that the salicylic acid could be considered as a potent and promising antifungal and preservative which is safe to environment.

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