Control Effects of Orange Peel on Cucumber Seedlings Fusarium Wilt
A combination of in vitro antibacterial tests and pot-culture experiments was conducted to explore the effects of orange and grape-fruit peel extract on the growth of Fusarium oxysporum and potentiality of orange peel extract in preventing cucumber seedlings damping-off dis-ease.The results showed that the orange peel extract exhibited a significant inhibitory effect on the Fusarium oxysporum cucumber-specializing pathogen,and the inhibitory effect was positively correlated with the concentration of the extract.On the 2nd and 6th day after pathogenic inocu-lating on PDA,the colony diameters of the control were 1.58 and 1.54 times larger than those of the full concentration of orange peel extract treatment.The total flavonoid content in orange peel was 1.14 times higher than that of grapefruit peel.Additionally,adding 0.25％ orange peel to reduction sterilization soil could effectively reduce cucumber seedling wilt. Under the condition of pathogen infection,the total biomass of seedlings grown on reduction sterilization soil added orange peel increased by 15.49％ compared with the control,and soluble sugar content in root was 1.12 times higher than that of the control.It was suggested that the application of orange peel to control cucumber seedling wilt has great potential.
万方数据
维普
