Biological Caracteristics of Colletotrichum spaethianum of the Pathogen and Fungicides Screening in Laboratory for Anthracnose of Lily
LIU Jiarong，LI Nan，GAN Taoyu，ZENG Huilan，LI Rungen*
Department of Horticulture，College of Life Science and Environmental Resources，Jiangxi Province Key Laboratory of Controlling and Regulating of Crop Growth and Development，Yichun University，Yichun 336000，Jiangxi，China
Abstract：Colletotrichum spaethianum is a newly discovered pathogen leading to anthracnose of‘Longya Lily’．In order to further clarify its biological characteristics and sensitivity to fungicides，this experiment adopted the mycelial growth rate method and spore counting method to study the effects of different carbon source，nitrogen source，substrate，pH，illumination，temperature，etc. on C. spaethianum mycelial growth and sporulation；This experiment also measured the sensitivities of this pathogen on 6 kinds of insecticides by mycelial growth velocity method．The results showed that the most suitable conditions for C. spaethianum mycelial growth were：carbon source-glucose source and lactose，nitrogen source-beef extract，pH value-5.0，temperature-25 ℃，substrate-OA，illumination-12 h light-12 h darkness；The most suitable conditions for sporulation were carbon：source-lactose，nitrogen source-glycine，pH value-9.0，temperature-25 ℃，substrate-PSA，24 h darkness；The mycelial lethal temperature was 53 ℃ and conidium lethal temperature was 58 ℃．Among the 6 fungicides taking the test，pyraclostrobin had the strongest inhibitory effect，EC50 value was 0.056 mg · L-1；Azolether · dysene had the worst prevention and control effect，EC50 value was 64.609 mg · L-1.
刘佳蓉，李楠，甘韬玉，曾慧兰，李润根. 百合炭疽病病原菌Colletotrichum spaethianum生物学特性及室内药剂筛选[J]. 中国蔬菜, 2021, 1(11): 75-80.
LIU Jiarong，LI Nan，GAN Taoyu，ZENG Huilan，LI Rungen. Biological Caracteristics of Colletotrichum spaethianum of the Pathogen and Fungicides Screening in Laboratory for Anthracnose of Lily. China Vegetables, 2021, 1(11): 75-80.
