Rating OIL COPAí ?? BA (Copaifera) INHIBITION OF GROWTH IN VITRO MYCELIAL plant pathogens
Abstract
The chemical composition of medicinal plants, some substances can act as activators of the defender system or the host plant against fungal pathogens. In the chemical constitution of the oleoresin Copaifera species was observed the presence of diterpenes and sesquiterpenes as -bisaboleno and -caryophyllene, this oxide being effective latter against fungi. Some harmful fungi agriculture cause considerable damage to plants, requiring an effective biological control and that is harmless to the environment. The objective is to evaluate the antifungal activity of oleoresin of two species of Copaifera on in vitro mycelial growth of pathogens. For mycelial growth, the pathogens were cultured in PDA culture medium. The samples used for verification of fungal inhibition were pure oils without any prior dilution. Oils used in tests belonged species Copaifera reticulata and Copaifera duckei. For Rhizoctonia solani the antifungal drugs, Sclerotium rolfsii and Macrophomina phaseolina species were used. For Rhizoctonia solani, between the tested oil resin Copaifera the two species of treatment was the most effective in inhibiting mycelial growth. The oleoresin C. duckei was the most effective in inhibiting mycelial growth of the fungus Sclerotium rolfsii and Macrophominaphaseolina.Downloads
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