英山黄花菜叶枯病的病原鉴定及室内药效研究  

Pathogen Identification and Screening Fungicides of Leaf Streak on Yingshan Daylily

作　　者：査中萍[1] 万正煌[1] 苏醒 焦春海[3] ZHA Zhong-ping;WAN Zheng-huang;SU Xing;JIAO Chun-hai(Food Crops Institute, Hubei Academy of Agricultural Sciences/Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement Wuhan 430064, China;Seed Management Bureau of Yingshan County,Yingshan 438700,Hubei, China;Hubei Academy of Agricultural Sciences ,Wuhan 430064, China)

机构地区：[1]湖北省农业科学院粮食作物研究所/粮食作物种质创新与遗传改良湖北省重点实验室,武汉430064 [2]湖北省英山县农业局,湖北英山438700 [3]湖北省农业科学院,武汉430064

出　　处：《湖北农业科学》2018年第8期51-54,共4页Hubei Agricultural Sciences

基　　金：物种资源保护费(1120162130135252037)

摘　　要：针对英山黄花菜(Hemerocallis citrina)叶部病害的病原菌进行形态特征观察、生物学特性研究、ITS序列分析以及室内药效试验。结果表明,该病原菌为Nigrospora sphaerica,菌丝生长适宜p H为5,最适的碳源是麦芽糖,最适的氮源是酵母浸出液;菌丝生长的致死温度是55℃;在供试的11种药剂中,以稀释500倍的50%多菌灵可湿性粉剂和稀释1 000倍的60%苯醚甲环唑水分散粒剂对病原菌的抑制效果最佳。根据病症,将该叶部病害命名为叶枯病。The morphology,biological characteristics,r DNA internal transcribed spacer and screening of fungicides of leaf disease on Yingshan daylily（Hemerocallis citrina） were studied. The results showed that the pathogen was Nigrospora sphaerica.The optimun p H of mycelium growth was 5. The optimal C-source was maltose and the optimal N-source was yeast extract;The lethal temperature of mycelium growth was 55 ℃. According to screening results,prochloraz had the best inhibition on the mycelium growth of the pathogen among the nine tested fungicides. According to the symptom,the disease was named as leaf streak.

关 键 词：黄花菜(Hemerocallis citrina) 叶枯病 病原菌鉴定 药效鉴定 

分 类 号：S436.44[农业科学—农业昆虫与害虫防治]