This study aims at determining and comparing the in vitro antifungal activity of six EOs (essential oils) extracted from Monodora myristica, Melaleuca quinquenervia, Eucalyptus torelliana, Chenopodium ambrosioides, ...This study aims at determining and comparing the in vitro antifungal activity of six EOs (essential oils) extracted from Monodora myristica, Melaleuca quinquenervia, Eucalyptus torelliana, Chenopodium ambrosioides, fresh Zingiber officinalis and dehydrated Zingiber officinalis with those of three synthetic fungicides (Callicuivre, Banko plus and Mancozeb) on Sclerotium rolfsii a pathogenic fungus of tomato in Cote d'Ivoire. The products were added to PDA (potato dextrose agar) medium at various concentrations. The results showed different aspects of the mycelium, different activities on mycelium growth and sclerotia production depending on the explants (mycelium or sclerotia). Depending on their IC and MGI (mycelium growth inhibition), the oils stemming from Chenopodium ambrosioides and fresh Zingiber officinalis showed more inhibitory activities on mycelial growth (reduction rate of 100%) and sclerotia production at 250 ppm. These activities were close to or even greater than those of fungicides. The mancozeb fungicide showed stronger activity than the others by inhibiting mycelium growth and sclerotia production of mycelium explants at 250 ppm. This study offers the possibility of using EOs in the control strategies of Sclerotium rolfsii.展开更多
文摘This study aims at determining and comparing the in vitro antifungal activity of six EOs (essential oils) extracted from Monodora myristica, Melaleuca quinquenervia, Eucalyptus torelliana, Chenopodium ambrosioides, fresh Zingiber officinalis and dehydrated Zingiber officinalis with those of three synthetic fungicides (Callicuivre, Banko plus and Mancozeb) on Sclerotium rolfsii a pathogenic fungus of tomato in Cote d'Ivoire. The products were added to PDA (potato dextrose agar) medium at various concentrations. The results showed different aspects of the mycelium, different activities on mycelium growth and sclerotia production depending on the explants (mycelium or sclerotia). Depending on their IC and MGI (mycelium growth inhibition), the oils stemming from Chenopodium ambrosioides and fresh Zingiber officinalis showed more inhibitory activities on mycelial growth (reduction rate of 100%) and sclerotia production at 250 ppm. These activities were close to or even greater than those of fungicides. The mancozeb fungicide showed stronger activity than the others by inhibiting mycelium growth and sclerotia production of mycelium explants at 250 ppm. This study offers the possibility of using EOs in the control strategies of Sclerotium rolfsii.