摘要
香蕉大灰斑病菌[Curvularia lunata(Wakker)Boedijn]适合生长的培养基有PSA、PDA和OMA;菌落生长、产孢和孢子萌发最适宜的温度为25～30℃,pH 5～9;在碳源和氮源中,蔗糖、葡萄糖、尿素、磷酸氢二氨和硝酸钠有利于病菌生长和产孢;分生孢子萌发对湿度有严格的要求,RH≥80%以上分生孢子萌发,随湿度增加萌发率增高;光照对菌丝体无显著影响,光暗交替有利于孢子的形成;孢子致死温度为55℃(10min)。
Biological characteristics of Curvularia lunata （Wakker） Boedijn had been preliminarily studied. Optimal mediums for pathogen growth were PSA, PDA and OMA. For mycelia growth, sporulation and conidial germination of pathogen, optimal temperature was 25-30~C, and pH 5-9. Among the tested carbon and nitrogen resources, sucrose, glucose, carbamide, sodium nitrate, etc were beneficial for mycelia growth and sporulation. The conidia germination is strict in RH requirement： Conidia can germinate at RH 81%-98%, or have 100% germination rate in water. The effect of light is not obvious on pathogen growth. The lethal temperature for conidia is at 55℃（10min）.
出处
《热带农业科学》
2007年第4期33-37,46,共6页
Chinese Journal of Tropical Agriculture
关键词
香蕉
大灰斑病
病原菌
生物学特性
banana
Curvularia leaf spot
biological characteristics
