江苏省稻瘟病菌小种的结构组成与变化趋势  

Race composition and developing tendency of Magnaporthe grisea in Jiangsu Province

作　　者：陆凡[1] 郑小波[2] 陈志谊[1] 刘永锋[1] 陈毓苓[1] 王法明[1] 

机构地区：[1]江苏省农业科学院植保所,江苏南京210014 [2]南京农业大学农业部病虫监测与治理重点开放实验室,江苏南京210095

出　　处：《南京农业大学学报》2002年第1期39-42,共4页Journal of Nanjing Agricultural University

基　　金：江苏省自然科学基金 (BK99184) ;教育部骨干教师基金 ;教育部跨世纪优秀人才基金资助

摘　　要：用 7个中国统一鉴别品种对 1997～ 1999年采集自江苏省吴江、赣榆、通州、高邮和宜兴等 5个代表地区的 32 4个稻瘟病菌株进行了小种鉴定。 3年中共检测到 2 1个小种 ,其中以ZG1小种出现频率最高 ,达 5 7 80 %～ 6 7 89% ,为优势小种 ;其次为ZE3 小种 ,出现频率为 16 5 0 %～ 19 81% ;其它小种出现频率较低。各地区小种的组成及年度间变化存在较大差异 ,宜兴地区小种组成简单 ,3年均以ZG1小种为优势小种 ;吴江地区小种组成复杂 ,优势小种变化较大 ;通州地区小种数量显著增加 ,ZG1小种的优势明显下降 ;赣榆地区的小种数量则明显减少。Three hundred and twenty four isolates obtained from rice blast specimen collected from 5 typical areas-Wujiang,Ganyu,Tongzhou,Gaoyou and Yixing in Jiangsu Province during 1997?1999 were assessed on 7 Chinese differential rice cultivars.Total 21 different races were identified,in which race ZG 1 was the predominant one with a detecting frequency range from 57 80% to 67 89% on average during the 3 years,followed by race ZE 3 range from 16 50% to 19 81%.The race composition vaired with areas.The race composition was simplest in Yixing where the raec ZG 1 was consistently predominant during 3 years.Most complicate race composition was observed in Wujiang where the predominant race changed greatly.In Tongzhou,the race number increased greatly from 1997 to 1999 and the incidence frequency of predominant race ZG 1 decreased significantly.But in Ganyu,the number of detected race decreased.The results also showed that the evolution of race composition in Jiangsu Province was positively related to the rice cultivars used.

关 键 词：稻瘟病菌 小种 出现频率 水稻品种 江苏 结构组成 变化趋势 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]