Pathogen identification and biological characteristics of eggplant leaf mold
The identification and biological characteristics of eggplant leaf mold caused by Passalora nattrassii was studied.Pathogen identification was conducted according to Koch's postulates,morphology and molecular method.The results showed that the pathogen of eggplant leaf mold was Passalora nattrassii.The biological characteristics test showed that the optimal temperature for growth was 25 ℃ and the optimal pH was 7.The best medium was PDA added with boiled leaf juice of eggplant.The mycelia grew best in soluble starch as carbon source and in peptone as nitrogen source.The mycelia grew better in darkness,and the lethal temperature was 59 ℃ for 10min.The fresh leaf juice of eggplant could significantly promote the rate of conidia germination.The optimal temperature for conidia germination was 30 ℃ and the optimal pH was 5.The conidia germinated best in maltose as carbon source and in ammonium sulfate as nitrogen source.The conidia germinated better under conditions of alternating light and dark,and the lethal temperature was 57 ℃ for 10min.
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万方数据
维普
