摘要
对贮藏期菜花黑斑病菌的侵染规律及最适侵染条件进行了初步研究,为菜花贮藏期该病害的防治提供理论依据。结果表明:温度为贮藏期黑斑交链孢霉菌的主要环境因子,其最低生长温度为4℃,在0℃环境下几乎无法存活。此外其最适侵染的pH为8;交链孢霉菌侵染过程中以分泌细胞壁降解酶破坏组织细胞完整性为主,病原菌在接种的第2天几丁质酶活性明显升高,在接种7d以内,果胶酶活性先下降后持续升高,这种活性升高与菜花贮存6～7d时的病斑扩展规律相符。
The black spot disease of caulifloduring storage were studied on its infection fungi and the optimum condition,in order to provide theoretical basis of eontrol of the disease. The results showed that the temperature was key factor that the lowest growth temperature was 4℃, and almost could＇t live in 0℃. The optimum infection pH value was 8; the pathogen infeeted cell walls in the process of degrading enzymes secreted damage tissue cells and the chitin-enzyme activity increased significantly in the vaccination within 2 days, pectin-enzyme activity increased in 6-7 days too, these enzyme-activity rising were consisted with the disease spot expansion.
出处
《北方园艺》
CAS
北大核心
2012年第5期166-168,共3页
Northern Horticulture
关键词
菜花
黑斑病
交链孢霉菌属
侵染
cauliflower
black spot disease
alternaria brassicicola
infection
