摘要： 测定了8对不育系（A）和保持系（B）以及一些杂交稻组合对6个小种的40株白叶枯病菌的抗性，比较了不同类型不育系对6个小种群的抗性差异。结果表明，冈型、印尼水田谷型和大多数野败型不育系的抗性很差，BT型的抗性较高。菌株Ah28对冈46A和野败珍汕97A的致病力强。比较了6个恢复系（C）和8个杂交组合对不同小种的抗性程度。结果显示，杂交稻的抗病性主要受父本（恢复系）核基因的控制，但同时又受不育胞质的影响，它们的抗性与病菌小种群的亲和力密切相关，寄主与病菌小种间亲和性的关系同样存在于杂交稻的三系材料和育种过程中
关键词:
稻白叶枯病,
不育系,
保持系,
杂交水稻,
抗性预测
Abstract: The resistance to bacterial leaf blight of rice in eight pairs of cytoplasmic male sterile(CMS)lines(line A)and their maintainers(line B)was tested by inoculating 39 isolates(belong to 6 races)of Xanthomonas oryzae pv. oryzae during last two years. According to the difference of lesion length between line A and line B,it was discovered that Gang 46A, Zhenshan 97 A and You 1A were most susceptible to strain Ah28(race 4), and the ZS97A was more susceptible to Ah28 than ZS97B. Comparison of resistance of seven restorers and eight hybrid combinations(F1)to different races showed that the resistance of hybrid combinations to the disease was not only controlled by nuclear genes, which derived from restorer and CMS line, but had close relation with compatibility of pathogenic race specificity.
Key words:
Bacterial blight of rice,
CMS,
Maintainer,
Hybrid rice,
Resistance to Xanthomonas oryzae pv.oryzae
中图分类号:
许志刚, 宋华明. 几个水稻不育系对白叶枯病的抗性[J]. 华北农学报, 1997, 12(1): 46-50. doi: 10.3321/j.issn:1000-7091.1997.01.010.
Xu Zhigang, Song Huaming. Resistance to Bacterial Leaf Blight in Some CMS Lines of Rice[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1997, 12(1): 46-50. doi: 10.3321/j.issn:1000-7091.1997.01.010.