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Position: Home > Articles > Biological Characteristics of Fusarium oxysporum, a Pathogen of Stem Rot on Cymbidium ensifolium Fujian Journal of Agricultural Sciences 2018 (2) 190-194

建兰茎腐病原菌尖孢镰刀菌的生物学特性研究

作  者:
姚锦爱;黄鹏;陈峰;余德亿
单  位:
福建省农业科学院植物保护研究所;福建省作物有害生物监测与治理重点实验室
关键词:
建兰;茎腐病;尖孢镰刀菌;生物学特性
摘  要:
为明确建兰茎腐病原菌尖孢镰刀菌的生物学特性,室内测定了温度、pH值、光照、碳氮源对病原菌生长和产孢量的影响,以及病原菌孢子的致死温度及时间。结果表明:该病原菌生长及产孢最适温度为25℃、pH值为7、光照条件为12h光暗交替、碳源为a-乳糖、氮源为NaNO_2,病原菌孢子的致死温度及时间为55℃水浴5min。研究结果可为建兰茎腐病的有效防控措施的选择奠定基础。
译  名:
Biological Characteristics of Fusarium oxysporum, a Pathogen of Stem Rot on Cymbidium ensifolium
作  者:
YAO Jin-ai;HUANG Peng;CHEN Feng;YU De-yi;Institute of Plant Protection,Fujian Academy of Agricultural Sciences;Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests;
关键词:
Cymbidium ensifolium;;stem rot;;Fusarium oxysporum;;biological characteristics
摘  要:
Biological characteristics of pathogenic Fusarium oxysporum, which causes stem rot disease on Cymbidiumensiflium,were studied.Effects of temperature,pH,light,and carbon and nitrogen sources on the hyphal growth and sporulation of the pathogen were examined.In addition,the lethal temperature and time of F.oxysporumspores were determined.The results showed that the optimal conditions for the growth and sporulation of the pathogen were 25℃,pH 7,12-h-L∶12-h-D exposure,lactose monohydrate for carbon,and NaNO_2 for nitrogen.The lethality of the spores was 5 min in 55℃ water.The study provided reference for the effective control of stem rot on C. ensifolium.

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