The Inhibitory Effect of the Extracts of the Plants of the Akmil, Datura and Alqabar Against some of Bacteria and Pathogenic Fungi of Plants
DOI:
https://doi.org/10.54172/mjsc.v28i1.148Keywords:
carotovora, Erwinia, Botrytis cinerea, oxysporum Fusarium, Pseudomonas syringaeAbstract
The potential of leaf extracts of three medicinal plants; Rosemary, Datura and Capper, which were collected from the Jabal Al-Khdar region, Libya, was assessed against the two types of fungi Botrytis cinerea and Fusarium oxysporum in comparison to the fungicide Rovral as well as the two types of plant pathogenic bacteria Erwinia carotovora and Pseudomonas syringae in comparison to the antibiotic Streptomycin under laboratory conditions. Results showed that Rovral and Streptomycin with the concentrations used have had a higher percentage of growth inhibition of both types of fungi and higher diameters in zone inhibition of both types of bacteria, respectively. Varying levels of inhibition were observed in response to the tested extracts at the concentrations of 1, 1.5 and 2 %. The differences in their inhibition depend on to the type of plant, concentration of extract and the type of pathogen. The highest extract (2%) of Rosemary (44.03 %) was effective against F. oxysporum followed by Capper (40.37 %) and Datura (20%), whereas Datura (74.63 %) was most effective against B. cinerea followed by Rosemary (54.63 %) and then Capper (40.53 %). B. cinerea was more sensitive to the tested extracts than F. oxysporum. The results also revealed that the extracts of Capper and Rosemary at the concentration of 2% was most inhibitory effect against both types of bacteria which was not statistically different from that of antibiotic. The effectiveness of the extracts against tested bacteria could be arranged by the following order; Capper ˃ Datura ˃ Rosemary. E. carotovora was more sensitive to the tested extracts than P. syringae. This study gave encouraging results for the use of these plant extracts in the control of tested fungi and bacteria.
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