Identification of Physiological Races of Pyricularia oryae in Heilongjiang Province of China from 2007 to 2011

• 作者: Liu Naisheng Song Chengyan Wang Guiling Zhou Xuesong
• 来源期刊: Plant Diseases and Pests(植物病虫害研究：英文版)
• 学科: 农学
• 关键词: 生理小种鉴定 黑龙江省 稻瘟病 中国 发生频率 鉴别品种 稻作区 和分布
• 年，卷（期）: 2014,（1）
• 页码范围: 6-8
• 页数: 3页
• 分类号: S435.121.4

摘要

In order to clear the composition and distribution of physiological races of Pyricularia oryae in Heilongjiang Province,299 single spore isolates of P.oryae collected from five rice regions( 30 cities,counties or farms) in Heilongjiang Province form 2007 to 2011 were identified by seven differential varieties in China,and a total of seven groups with 31 physiological races had been identified. The results showed that ZA,ZD and ZB groups were the dominant groups in Heilongjiang Province,with the occurrence frequencies of 34. 8%,31. 1% and 16. 1%,respectively. ZD5was the dominant race with the occurrence frequency of17. 1%; followed by ZA49and ZD1,with the occurrence frequencies of 13.7% and 10.7%,respectively. The types and compositions of physiological races of P.oryae varied with rice regions.