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对大果沙棘溃疡病的症状、病原菌形态学特征、致病性测定以及生物学特性进行了研究。根据病原菌的形态特征鉴定为壳梭孢属葡萄生壳梭孢(Fusicoccum viticolum)。室内外的回接试验结果表明,壳梭孢菌是大果沙棘溃疡病的病原菌。通过生物学特性研究,壳梭孢菌生长的适宜温度为25~28℃,最佳为25℃,最佳pH值为7.5,全光照条件下生长速度较快,生长的最佳碳源为蔗糖,最佳氮源为牛肉膏。
The symptoms of large-fruit seabuckthorn ulcer disease, morphological characteristics of pathogenic bacteria, pathogenicity determination and biological characteristics were studied. It was identified as Fusicoccum viticolum according to the morphological characteristics of pathogenic bacteria. Indoor and outdoor test results show that the return of tussah in large fruit seabuckthorn canker pathogen. Through the study of biological characteristics, the optimum temperature for growth of tuchenella is 25-28 ℃, the optimum is 25 ℃, the optimal pH value is 7.5, and the growth speed is faster under the whole illumination. The best carbon source for growth is sucrose The best nitrogen source is beef extract.