河西走廊玉米大斑病菌0号生理小种生物学特性研究  

Study on the biological characteristics of the physiological race 0 of Exserohilum turcicum in the Hexi Corridor

作　　者：雷玉明 郑天翔[1,2,3] 邢会琴 程红玉[1,2] 赵文勤 赵文明[4] LEI Yuming;ZHENG Tianxiang;XING Huiqin;CHENG Hongyu;ZHAO Wenqin;ZHAO Wenming(College of Agriculture and Ecological Engineering,Hexi University,Zhangye 734000,Gansu;Key Laboratory of Hexi Corridor Resources Utilization of Gansu,Zhangye 734000,Gansu;Qilian Mountains Research Center of Integrated Pest Management,Hexi University,Zhangye 734000,Gansu;Deguang Agricultural Science and Technology Co.,Ltd.,Zhangye 734000,Gansu)

机构地区：[1]河西学院农业与生态工程学院,甘肃张掖734000 [2]甘肃河西走廊特色资源利用重点实验室,甘肃张掖734000 [3]河西学院祁连山有害生物综合治理中心,甘肃张掖734000 [4]德光农业科技开发有限责任公司,甘肃张掖734000

出　　处：《长江大学学报（自然科学版）》2023年第4期83-89,共7页Journal of Yangtze University(Natural Science Edition)

基　　金：甘肃省教育厅产业支撑计划项目“丝路寒旱区青贮玉米‘河农1号’新品种产业化关键技术研究与示范推广”(2021CYZC-53)。

摘　　要：采用生长速率法研究了甘肃省河西走廊玉米大斑病菌(Exserohilum turcicum)0号生理小种生物学特性。结果表明,病菌菌丝在5~40℃均可生长,适宜温度为25~30℃,最适温度28℃;最适pH为7~8;12 h/d光照+12 h/d黑暗环境有利于菌丝生长;最适碳源为葡萄糖与木糖,最适氮源为甘氨酸。病菌分生孢子产孢量最适温度28℃;最适pH为7;最适碳源为果糖和乳糖、木糖。分生孢子萌发的最适温度25℃;适宜pH为6~8;最适碳、氮源为葡萄糖和蛋白胨。半光半暗、全黑暗分别有利于产孢和孢子萌发。菌丝和分生孢子致死温度分别为55℃和57℃,10 min。The growth rate method was used to study the biological characteristics of the physiological race 0 of Exserohilum turcicum in the Hexi Corridor of Gansu Province.The results show that the pathogenic fungus hyphae can grow at 5~40℃,the suitable temperature is 25~30℃,and the optimum temperature is 28℃;the optimum pH is 7~8;12 h/d light+12 h/d darkness environment is beneficial to the mycelia growth;the most suitable carbon sources is glucose and xylose and the most suitable nitrogen sources is glycine.The optimum temperature for conidia production is 28℃;the optimum pH is 7;the optimum carbon sources is fructose,lactose and xylose.The optimum temperature for conidia germination is 25℃;the optimum pH is 6~8;the optimum carbon and nitrogen sources are dextrose and pepton.Half-light and half-darkness and total darkness are conducive to sporulation and conidia germination,respectively.The lethal temperature of hyphae and conidia are 55℃and 57℃for 10 mins,respectively.

关 键 词：玉米(Zea mays L.) 大斑病菌(Exserohilum turcicum) 生物学特性 河西走廊 

分 类 号：S435.1[农业科学—农业昆虫与害虫防治]