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本文报道用中日两套鉴别品种研究我国北方稻区稻瘟病菌生理小种的结果:1、确定了北方稻区的生理小种;2、明确了丹东地区和北京地区的小种组成及其优势小种;3、评定了已知抗病基因在当前抗病育种中的利用价值,指出BL1可以在抗病育种中继续利用;4、指出中花9号推广应用后引起的小种组成的变化,说明栽培品种的更替对小种组成的变化起主要作用;5、通过分离菌在具有已知基因的中日鉴別品种上反映的异同,根据基因对基因原理,对小种进行订正,指明正确确定小种的方法。
This paper reports the results of two races of Chinese and Japanese differential cultivars for studying the physiological races of Magnaporthe grisea in northern rice of China. 1, Identify the physiological races in the northern rice area; 2, Identify the races of the races in Dandong and Beijing 3) Evaluate the utilization value of known resistance genes in the current disease-resistant breeding, and point out that BL1 can continue to be utilized in disease-resistant breeding; 4. It is pointed out that the germplasm Changes, indicating that the replacement of cultivars play a major role in the changes of races. 5, According to the similarities and differences of the isolates on the identification of Chinese and Japanese cultivars with known genes, Indicate the correct method for identifying races.