中国稻米Issue(1)：60-65,6.DOI:10.3969/j.issn.1006-8082.2015.01.014
生防潜力菌H158与杀菌剂混配对水稻纹枯病菌毒力增效作用
Synerg istic Effects of Potential Biocontrol Bacterium H158 Mixed with Fungicides Against the Pathogen of Rice Sheath Blight Rhizoctonia solani
摘要
Abstract
The toxicities of Jinggangmycin A and boscalid, as well as their mixture, against the pathogen of rice sheath blight Rhizoc-tonia solani were investigated by using the method of inhibition mycelial growth rate. The results showed that EC50 of Jinggangmycin A and boscalid were 114.0672 mg/L and 0.0569 mg/L, respectively, and EC50 of mixture of Jinggangmycin A and boscalid at rate of 1:100, 1:200, 1:300, and 1:400 were 5.5814 mg/L, 6.8186 mg/L, 5.2672 mg/L and 2.7772 mg/L, respectively. Co-toxicity index of these mix rates were 0.9716, 1.5182, 2.8210, and 6.8325, which means that almost all of the mixtures exhibited synergy effect, except the mix rate of 1∶100 showing additive effect. Boscalid showed little inhibition effect against the bacterium H158 at the concentration as high as 1.6 mg/ml. H158 can only be inhabited by Jinggangmycin A at higher concentration, however mixture of Jinggangmycin A and boscalid showed little inhibition effect against H158, the control efficient of which can be enhanced to more than 90%.关键词
井冈霉素A/啶酰菌胺/生防潜力菌H158/水稻纹枯病菌/毒力系数Key words
validamycin A/boscalid/potential biocontrol bacterium H158/rhizoctonia solani/Co-toxicity index分类
农业科技引用本文复制引用
周明运,汪爱娟,刘连盟,黄世文..生防潜力菌H158与杀菌剂混配对水稻纹枯病菌毒力增效作用[J].中国稻米,2015,(1):60-65,6.基金项目
中国农业科学院科技创新工程“水稻病虫草害防控技术科研团队”；转基因重大专项（2011ZX08010-005）；支撑计划（2012BAD19B03）；转基因重大专项 （）
