ETUDE DE L’EFFICACITE DE L’EXTRAIT ETHANOLIQUE D’ECORCES DE PUNICA GRANATUM LINN SUR DEUX SOUCHES PHYTOPATHOGENES :ASCOCYHTA RABIEI (PASS.) LABR. ET FUSARIUM OXYSPORUM F.SP.RADICIS –LYCOPERSICI

Abstract

The aim of this study is the evaluation of the antifungal activity ofPunica granatum peel towartds two phytopathogenic agents, wich are: theAscocyhta rabiei (pass .) Labr and Fusarium oxysporum f.sp . radicislycopersici(FORL). To test the effectiveness of the ethanol extract ofpomegranate peel (EEPP), three parameters were studied: the mycelialgrowth, inhibition rate and sporulation. It is thus that the strain of Fusariumoxysporum lycopersici f.sp.Radicis was more resistant to 5% EEPP withmycelial growth of 9 mm and an inhibition rate of 75.67%, compared tothose of Ascocyhta rabiei (pass). Labr with mycelial growth of 7 mm andan inhibition rate of 79.41% after 7 days of incubation. This difference ismainly due to the sensitivity and the natural resistance of the strains tested.