玉米茎基腐病原菌的分离及其生物学特性研究
Isolation and Biological Characteristics of the Pathogen of Corn Stem Root Rot
郑天翔 1杨娜 2周海瑛 3梁冰倩 4马金 5雷鑫 6王丽娟 1李会文 7雷玉明1
作者信息
- 1. 河西学院农业与生态工程学院,甘肃 张掖 734000;甘肃省河西走廊特色资源利用重点实验室,甘肃 张掖 734000
- 2. 张掖市科技服务中心,甘肃 张掖 734000
- 3. 甘肃省植保植检站,甘肃 兰州 730020
- 4. 河西学院农业与生态工程学院,甘肃 张掖 734000
- 5. 甘肃前进牧业科技有限责任公司,甘肃 张掖 734000
- 6. 泉州师范学院陈守仁商学院,福建 泉州 363000
- 7. 甘肃德光农业有限公司,甘肃 张掖 734000
- 折叠
摘要
为探明玉米茎基腐病原菌的形态特征及生物学特性,对病原菌进行分离,并在不同温度、光照、PH值、碳源、氮源下对其进行纯培养.结果表明:该病由镰孢菌引起;菌落形态为圆形,低度突起,乳白色,少透明;菌丝为有隔菌丝,分生孢子为卵圆形或圆柱形,有一至二个隔膜;25℃是该菌的最佳生长温度;最适宜生长的碳源和氮源分别是淀粉和蛋白胨;最适宜生长的PH值是8;且该病原菌对光照具有敏感性.该研究结果可为玉米茎基腐病的诊断及防控提供理论依据.
Abstract
To investigate the morphological and biological characteristics of the pathogens causing maize stem base rot,the pathogens were isolated and cultured under various conditions including different temperatures,light,pH levels,and carbon and nitrogen sources.The results revealed that the disease is caused by Fusarium species.The colony appears round,with a low protru-sion,milky white color,and low transparency.The mycelium is septate,and the conidia are oval or cylindrical with one to two sep-ta.The optimal growth temperature for the fungus is 25°C.The preferred carbon and nitrogen sources are starch and peptone,re-spectively.The optimal pH for growth is 8,and the pathogen is sensitive to light.These findings provide a theoretical foundation for the diagnosis and control of maize stem base rot.
关键词
玉米/茎基腐病/镰孢菌/生物学特性Key words
Corn/Stem base rot/Fusarium spp./Biological characteristics引用本文复制引用
基金项目
甘肃省教育厅产业支撑计划(2021)(2021CYZC-53)
出版年
2024
NETL
NSTL
万方数据