1991～1995年辽宁省稻瘟病菌种群动态分析  

Race dynamics analysis of rice blast in Liaoning Province in 1991-1995.

作　　者：刘志恒[1,2,3] 俞孕珍[1,2,3] 魏松红 朱桂清[1,2,3] 吴芷君 刘玉涛[1,2,3] 杨瑞文 李雪光[1,2,3] 

机构地区：[1]沈阳农业大学植保系 [2]辽宁营口县植物保护站 [3]辽宁绥中县植物保护站

出　　处：《植物保护》1998年第4期3-6,共4页Plant Protection

摘　　要：１９９１～１９９５年５年间，共分离测定了辽宁省稻瘟病菌２４９个单孢菌株，经７个中国鉴别品种鉴定划分为７群２８个生理小种，在辽宁省流行的优势种群为ＺＦ群和ＺＤ群。近年来致病性强的籼型小种及粳型小种强致病类群出现频率增加，弱致病类群频率下降。１９８５年导致中丹２号水稻抗瘟性丧失的ＺＡ６１小种１９９５年又重新出现，前几年表现优势的ＺＧ群小种１９９５年暂时消失。monospore strains of Pyricularia grisea Saccardo isolated from Liaoning Province were identified by using 7 chinese different varieties in 1991-1995. 249 monospore strains were divided into 7 groups and 28 physiological races. The tests showed that ZF and ZD were dominant groups in Liaoning Province. In recent years, the occurrence frequency of high virulent races of indica and japonica races increased, and that of low ones were decreased. ZA 61 was the dominant race in 1985 and occurred again in 1995, and the races of ZG disappeared temporarily.

关 键 词：水稻 稻瘟病菌 生理小种 种群动态 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]