论文部分内容阅读
每年选用天津市有代表性的7群11～15个稻瘟生理小种,先后对768个品种(系)进行抗谱测定,抗菌率达80～100％有34个品种(系),占供试品种(系)4.4％,抗菌率在60～79％属中等抗病的品种(系)有109个,占14.2％,其余625个品种(系)属感病类型。另外用7群10个小种对抗菌力较高的74个品种(系)进行抗病类型划分,抗菌率在90％有4个类型,抗菌率在80％有3个类型。根据各地优势小种分布选择抗源和供生产上品种轮换种植的参考。以上结果说明抗谱测定是相对稳定的,对生产与育种有实用价值。
7 groups of 11 to 15 rice blast physiological races were selected each year in Tianjin, and 768 varieties (lines) were tested for antibiotic resistance. The antibacterial rate of 80-100% was 34 varieties (lines) The test varieties (lines) 4.4%, antibacterial rate of 60 ~ 79% are moderate disease-resistant varieties (lines) 109, accounting for 14.2%, and the remaining 625 varieties (lines) are susceptible types. In addition, 7 groups of 10 races were used to classify the resistant varieties of 74 cultivars (lines) with high antimicrobial resistance. There were 4 types of antimicrobial rate of 90% and 3 types of antimicrobial rate of 80%. According to the distribution of dominant races around the selection of anti-source and production of varieties for rotation reference. The above results show that the anti-spectrum assay is relatively stable, and has practical value for production and breeding.