摘要
采用针刺接种法,在水稻孕穗期接种3个不同致病型的细菌性条斑病菌,鉴定134个不同类型的水稻品种对细菌性条斑病的抗感性,并使用6个鉴别品种测定江苏徐淮地区82个细菌性条斑病菌的致病力。结果表明:粳稻品种对细菌性条斑病的抗性明显高于籼稻,常规稻和杂交稻对细菌性条斑病的抗性没有明显差异;根据病菌与鉴别品种的互作反应,将供试菌株区分为8个致病型,大多数菌株和鉴别品种表现为弱互作关系,少数菌株与鉴别品种存在强互作关系;第1致病型的菌株致病力强,6个鉴别品种均呈感病反应,并占供试菌株总数的40.2%。
The resistance to bacterial leaf streak of 134 rice varieties from Jiangsu Province were screened by using three strains of Xanthomonas oryzae pv. oryzicola （Xooc） with different pathotypes, and were inoculated by needle puncture in rice boot stage. The results showed that the resistance to bacterial leaf streak of Japonica rice was stronger than Indica rice, but was not obviously different with routine rice and hybrid rice. The virulence differentiation of 82 isolates of Xooc collected from Xuhuai area of Jiangsu Province were identified by using six differential varieties. It was classified into 8 pathotypes, majority of isolates were found weak interaction between bacterium and rice varieties, but minority isolated were specific interaction significantly. The isolates of pathotype I possessed strong virulence, and the six differential varieties were sensitive, and accounted for 40.2% proportion of isolates identified.
出处
《植物保护学报》
CAS
CSCD
北大核心
2009年第4期315-318,共4页
Journal of Plant Protection
基金
农业部公益性科研专项(nyhyzx07-56)
江苏省农业科技创新项目(011061070603)
关键词
水稻细菌性条斑病
水稻细菌性条斑病菌
品种抗性评价
鉴别品种
致病型
rice bacterial leaf streak
Xanthomonas oryzae pv. oryzicola
variety resistant evaluation
differential variety
pathotype
