摘要
研究了分离自稗草上的一个致病菌新月弯孢Curvularia lunata菌株J15(2)的基本生物学特性。结果表明,该菌菌丝生长、产孢的最适温度为28~32℃,pH为6~8。菌丝生长对光照无要求,黑暗利于增加产孢量,培养至15d可达产孢高峰。碳、氮、磷和硫等元素是该菌菌丝体生长、产孢的必需元素,钾、镁和铁对菌丝体的生长、产孢有极大的促进作用。分生孢子萌发的适宜温度范围为20~35℃,最适温度28℃;适宜培养基初始pH值在4~10之间。在58℃下,分生孢子10min失活。
The pathogen Culvularia lunata isolated from Echinochloa crus-galli is a potential mycoherbicide against this weed. The objective of this study was to determine biological characteristics of this pathogen. Optimal temperature ranged from 28℃ to 32℃ for mycelium growth and sporulation. The optimal initial pH of culture media was 6 - 8. Mycelia could grow in either dark or light, but darkness was beneficial for sporulation. Adding P, S, K, growth and sporulation. Optimal temperature ranged from 20℃ to 35℃ for conidium germination. The lethal temperature for conidia is at 58℃ (10 min). Optimal initial pH value was from 4 to 10 for conidial germination.
出处
《中国生物防治》
CSCD
北大核心
2009年第1期54-59,共6页
Chinese Journal of Biological Control
基金
"十一五"国家"863"计划(2006AA10A214)
关键词
稗草
新月弯孢菌
真菌除草剂
生物学特性
Echinochloa crus-galli
Culvularia lunata
mycoherbicide
biological characteristics