ABSTRACT
Senecio glaucus ssp. coronopifolius (Maire) and Ridolfia segetum (L.) are competitive-ruderal plants growing in Morocco. Their essential oils were tested for antifungal activity in vitro against Botrytis cinerea, an agent of gray mold in plants, using the volatile phase method (VF) and the poisoned food method (PF). S. glaucus and R. segetum showed antifungal potential using the VF method (68% and 80% inhibition at 640 μl/disc) and PF method (83% and 98% inhibition at 16 μl/ml), respectively. Accordingly, both essential oils are potential natural substitutes for chemical pesticides. Inhibition of fungal growth and simulations of synergistic interactions are facilitated by the use of plant oils. Qualification of essential oils using preliminary fuzzy models specifies the groups of units that create formulation design and prediction of inhibition. The latter can be expanded in simulations of synergy in variable scenarios.
