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采用人工辅助接种、自然发病的方法对25个品种连续十年在病圃中的稻瘟病抗性进行了监测。结果发现,39.18%的年份品种组合叶瘟颈瘟在田间抗感表现出质的不同,有的叶瘟感病而颈瘟表现抗病,有的叶瘟抗病而颈瘟表现感病。叶瘟颈瘟表现一致的品种均出现在严重感病或抗性较强的品种。水稻本身的遗传背景对稻瘟病抗病基因的表现有影响。本文还就稻瘟病抗病育种和抗病品种的合理利用等问题进行了讨论。
The blast resistance of 25 cultivars in the nursery for 25 consecutive years was monitored by artificial inoculation and natural attack. The results showed that 39.18% of the year variety combinations of leaf blast plague showed different quality in the field, some were susceptible to the disease and the others were resistant to the disease and some were susceptible to the blast disease and the susceptible to the disease. The same variety of leaf blast plaque appear in the serious susceptible or resistant varieties. The genetic background of rice has an impact on the expression of disease resistance genes of rice blast. This article also discussed the problems of disease resistance breeding of rice blast and the rational utilization of resistant varieties.