摘要
目的:确定引起白及根腐病的病原物及其生物学特性,可以为制定有效的防治措施提供依据。方法:对白及根腐病的发病规律和病害症状进行了调查,并对其病原菌进行分离、鉴定、回接和研究其生物学特性。结果:病原菌的菌丝生长温度范围为5～35℃,最适温度为25～30℃;pH值范围为3～10,最适宜的pH值为6～7;分生孢子在相对湿度为100%(水)中才能很好的萌发;55℃处理10 min是孢子的致死条件;光照对孢子萌发的影响较小。结论:引起白及根腐病的病原菌是尖孢镰刀菌Fusarium oxysporum Schlecht.。
Objective：To identify the pathogen of Bletilla striata pseudobulb rot and provide foundation for formulation effective control measures.Methods：Surveyed the pathogenesis regularity and disease symptom of Bletilla striata pseudobulb rot,and conducted the pathogen separation,identification,vaccination and research on its biological characteristics.Results：The conditions for mycelium growth were as follows：the temperature ranged from 5 to 35 ℃,and the optimum temperature ranged from 25 to 30 ℃.The pH ranged from 3 to 10,and the optimum pH ranged from 6 to 7.The germination rate of conidia was high when the relative humidity was 100%.The lethal temperature was 55 ℃ for 10 min.Illumination had little influence on the germ growth and development.Conclusion： The results showed that the pathogen was Fusarium oxysporum.
出处
《中药材》
CAS
CSCD
北大核心
2013年第3期341-345,共5页
Journal of Chinese Medicinal Materials
基金
云南植物药业有限公司横向课题云南省重点产业创新工程(2008 IF007)
关键词
白及
根腐病
尖孢镰刀菌
生物学特性
Bletilla striata（Thunb.） Reichb.f.
Pseudobulb rot
Fusarium oxysporum Schlecht.
Biological characteristic
