Abstract: Trichoderma viride strain is a potential biocontrol fungus that grew well on PDA, soybean powder, PDA with yeast extract, Bean sprout juice Culture medium. Among them, the PDA medium was most favorable for its hypha growth. Temperature had distinct effect on the hypha growth and spore bearing, the optimum temperature for hypha growth was 25oC. Trichoderma viride strain could grow in a wide of pH value(from 5 to 8),the optimum pH value for hypha growth was 6.Light did not distinctly affect hypha.
This article discusses the screening and determination of defensible effect for defensible Trichoderma strains tolerant to Carbenicillin. With PDA medium containing fungicides and ultraviolet radiation.Trichoderma of resistant to agricultural chemical parent are obtained Carbenicillin stress from antagonistic strain.Trichoderma strains are obtained.The resistance is not decline after transferring of culture ten times continuously.
Keywords:Trichoderma viride; Biological; Fungicide tolerance;Carbendazim;UV