摘要
2002～2005年在吉林省内各稻作区采集332份稻瘟病标样,分离出306个有效单孢菌株,用7个中国稻瘟病菌鉴别品种鉴定为7群29个小种,优势种群为ZD群和ZE群,其次是ZG群和ZF群;优势小种为ZG1、ZE1和ZF1。鉴定结果表明:吉林省稻瘟病菌生理小种以粳型小种为主,粳型优势种群之间的差距不显著,优势小种在不同年份、不同地区出现频率不同,强毒小种主要分布在吉林、通化地区,这也是该地区历年病害发生较重的主要原因。
306 mono-spore strains were separated from 332 sample of rice blast collected from each paddy rice productive fields in Jilin province from 2002 to 2005.7 groups with 29 physiological races were identified by comparing with China verified strains, in which ZD and ZE groups were dominant groups, ZG and ZF were secondary groups, ZG1 ,ZE1 and ZF1 were dominant physiological races. The results showed that japonica physiological race is dominant of blast in Jilin province, but the difference among dominant groups was not significant. The occurrence frequency of dominant race is different from time to time and place to place. Most of dominant and strong virulence races were found in Jilin city and Tonghua city, which was the main reason why the disease happened so seriously in these area during past years.
出处
《吉林农业科学》
CSCD
2008年第1期33-35,共3页
Journal of Jilin Agricultural Sciences
基金
“十一五”国家重大科技支撑计划课题(2006BAD08A004)
关键词
稻瘟病
生理小种
消长动态
Rice blast
Physiological race
Up and down
