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通过分离培养、人工接种和病原鉴定,确定银鹊树溃疡病的病原为茄腐皮镰孢菌(Fusarium solani(Martius)App. etWr.),有性世代未见。病菌菌丝生长适温25～33℃,低于10℃、高于38℃均不能生长,且大孢子的产生量与温度有关;对pH值要求不严,在pH为2～10时均可生长;其菌丝在PDA 和马丁氏培养基上生长最佳,大型分生孢子产生量多,在银鹊叶煎汁和清水洋菜培养基上生长一般。在利用碳源上以葡萄糖、蔗糖和鼠李糖生长最好,半乳糖、果糖次之,木糖最差。分生孢子萌发的适宜温度为25～30℃,大孢子萌发以10% 银鹊叶煎汁及2% 葡萄糖液最好(达98% ),6h 达到萌发盛期;小孢子10h为萌发盛期,且在上述两种营养液中的萌发率仅为40.3% 和36.0% 。
Fusarium solani (Martius) App. Et Wr.) Was identified as a pathogen of silver-canker canker by isolating and culturing, artificial inoculation and pathogen identification. The mycelial growth of the mycelia is suitable at 25 ~ 33 ℃, less than 10 ℃ and higher than 38 ℃, and the production of megaspore is related to the temperature; the pH is not strict, and the pH value is 2 ~ 10 The mycelium grows best on PDA and Martin’s medium, and the large conidia produce more, which grows on the medium of silver magpie leaves and clear water. In the use of carbon sources to glucose, sucrose and rhamnose best growth, galactose, fructose followed, xylose worst. The optimum temperature for conidial germination was 25-30 ℃. The germination of megaspore was the best (98%) with 10% silver magnesia leaves decoction and 2% , And the germination rate in the two nutrient solutions was only 40.3% and 36.0%.