The capability of yeast Trichosporon sp., an antagonist isolated from peach fruit, in biological control was evaluated in apple ( Malus domestica Borkh. cv. Fuji) fruits, when inoculated with different concentr...The capability of yeast Trichosporon sp., an antagonist isolated from peach fruit, in biological control was evaluated in apple ( Malus domestica Borkh. cv. Fuji) fruits, when inoculated with different concentrations of Botrytis cinerea Pers. and Penicillium expansum (Link) Thom, as well as in combination with calcium and fungicide. The concentrations of the yeast cells and pathogen spores obviously influenced disease incidence and lesion development in apples. There was a significant negative correlation between concentrations of the yeast cells and infectivity of the pathogens. When the yeast cell suspensions reached the concentration of 10 8 colony_forming units (CFU) /mL, there was no infection caused by B. cinerea and P. expansum with spore concentrations below 10 6 spores/mL in apple fruits. The yeast at concentrations of 10 6-10 7 CFU/mL in combination with fungicide (iprodione at 50 μL/L) provided control of decay caused by B. cinerea and P. expansum better than separate application. Effect of controlling gray mould and blue mould rots was enhanced when Trichosporon sp., even at low concentration of 10 5 CFU/mL, was applied in the presence of 1%-2% CaCl 2 in an aqueous suspension.展开更多
The phosphonate fertilizers, Calphos （calcium phosphonate）, Magphos （magnesium phosphouate） and Phosphoros （potassium phosphonate） were used in Jordan and showed a nematicidal effect. This study aimed to investi...The phosphonate fertilizers, Calphos （calcium phosphonate）, Magphos （magnesium phosphouate） and Phosphoros （potassium phosphonate） were used in Jordan and showed a nematicidal effect. This study aimed to investigate the fungicidal effect of these fertilizers against the growth of the fungi, Fusarium proliferatum, Altrenaria solani, Pythium debaryanum and Penicillium digitatum. Results showed that the phosphonate fertilizer Calphos at the concentration of 1% mixed with potato dextrose agar （PDA） totally inhibited the growth of all studied fungi. Magphos （1%） delayed the growth of the fungus F. proliferatum and inhibited the growth of other tested fungi. While Phosphoros （1%） mixed with PDA inhibited the growth ofA. solani and P. digitatum even after 12 d of incubation and delayed the growth ofF. proliferatum and P. debaryanum compared with the growth of the fungi on the PDA only.展开更多
文摘The capability of yeast Trichosporon sp., an antagonist isolated from peach fruit, in biological control was evaluated in apple ( Malus domestica Borkh. cv. Fuji) fruits, when inoculated with different concentrations of Botrytis cinerea Pers. and Penicillium expansum (Link) Thom, as well as in combination with calcium and fungicide. The concentrations of the yeast cells and pathogen spores obviously influenced disease incidence and lesion development in apples. There was a significant negative correlation between concentrations of the yeast cells and infectivity of the pathogens. When the yeast cell suspensions reached the concentration of 10 8 colony_forming units (CFU) /mL, there was no infection caused by B. cinerea and P. expansum with spore concentrations below 10 6 spores/mL in apple fruits. The yeast at concentrations of 10 6-10 7 CFU/mL in combination with fungicide (iprodione at 50 μL/L) provided control of decay caused by B. cinerea and P. expansum better than separate application. Effect of controlling gray mould and blue mould rots was enhanced when Trichosporon sp., even at low concentration of 10 5 CFU/mL, was applied in the presence of 1%-2% CaCl 2 in an aqueous suspension.
文摘The phosphonate fertilizers, Calphos （calcium phosphonate）, Magphos （magnesium phosphouate） and Phosphoros （potassium phosphonate） were used in Jordan and showed a nematicidal effect. This study aimed to investigate the fungicidal effect of these fertilizers against the growth of the fungi, Fusarium proliferatum, Altrenaria solani, Pythium debaryanum and Penicillium digitatum. Results showed that the phosphonate fertilizer Calphos at the concentration of 1% mixed with potato dextrose agar （PDA） totally inhibited the growth of all studied fungi. Magphos （1%） delayed the growth of the fungus F. proliferatum and inhibited the growth of other tested fungi. While Phosphoros （1%） mixed with PDA inhibited the growth ofA. solani and P. digitatum even after 12 d of incubation and delayed the growth ofF. proliferatum and P. debaryanum compared with the growth of the fungi on the PDA only.
