吉林省稻瘟病菌生理小种鉴定研究续报

IDENTIFI CATION OF RACES OF RICE BLAST FUNGI IN JILIN PROVINCE

摘要:

1982～1985年继续用中国鉴别品种和吉林辅助鉴别品种接种鉴定了全省主要产稻区28个市、县533份稻瘟病标样分离菌。鉴定结果表明，随着水稻品种更换，吉林省稻瘟病菌生理小种的结构发生了明显变化，新出现ZC群中国小种，ZD群和ZE群中国小种的出现频率也明显增长。吉林小种的变化更为明显，出现J₄、J₆两个新小种组，J₀组小种（ZD₁J₀、ZE₁J₀、ZF₁J₀、ZG₁J₀等）的出现频率明显下降;J₂组小种（ZD₁J₂，ZE₁J₂、ZF₁J₂、ZG₁J₂等）的出现频率显著上升。本文对吉林省稻瘟病菌生理小种数量的消长变化与水稻品种的关系作了初步分析。

Abstract:

By using Chinese differential varieties and Jilin secondary differential varieties, identificationof 533 isolates of rice blast fungi from 28 cities or counties in Jilin province were continuously studied from 1982-1985. The results showed that great change has been observed in the pathogenicity of Physiological race of rice blast. The Chinese race, grou pea. ZC.appeared at the first time,and the frequency of appearance for group ZD and ZE was obviously increased. Jilin race were changed m or greatly. The group of J₄ and J₆ also appeared at present,and the fre-equency of appearance in group J₀ was decreased, but the group J₂was increased obviously.
This paper also anylysed the changes in physiological race of rice blast fungi with relation to rice varieties in Jilin province.