【摘要】 用 7个全国统一的鉴别寄主 ,对宁夏采集的稻瘟病标样分离到的 5 2个单孢菌株进行生理小种鉴定及小种分布统计 .结果表明 :宁夏有 7群 19个生理小种 ,其中A、B群的生理小种在宁夏均有分布 ,且A1小种出现频率最高 ,为 15 .4 % ,为我区优势小种 ,其次为B1小种 ,出现频率为 11.4 % .本试验结果为指导宁夏水稻抗病育种及水稻品种的合理布局提供依据 .更多还原

【Abstract】 single spore strains isolated from samples of rice blast in Ningxia were identified with 7 standard distinguish hosts of China and the distribution of races was counted.The results showed that Ningxia has 19 races which belong to 7 groups respectively.The virulent races of A and B group have distributed widely in Ningxia.These results could be helpful for resistance breeding and rational arrangement of rice variety in Ningxia.更多还原