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白叶枯病是水稻严重的细菌性病害,近年来已引起世界各水稻主要生产国的研究和重视。白叶枯病在我省发病的历史已有70多年。由于有些高产良种,抗白叶枯病能力较弱,随着感病品种的推广,白叶枯病发展也逐渐严重起来。在我省的一些地区,白叶枯病的流行是影响晚造产量稳定性的重要因素之一。为了摸索我省现有抗性亲本的遗传规律,为抗病育种和提高杂优水稻的抗病性提供理论依据,我们在1977年早晚两造,开展了本项研究。
Bacterial leaf blight is a serious bacterial disease in rice. In recent years, it has aroused the research and attention of all major rice-producing countries in the world. The history of bacterial blight in our province has been more than 70 years. Because of some high-yielding elite, bacterial blight resistance is weak, with the promotion of susceptible varieties, the development of bacterial blight is also gradually serious. In some areas of our province, the prevalence of bacterial blight is one of the important factors affecting the stability of late-crop yield. In order to explore the genetic law of the existing resistant parents in our province and provide a theoretical basis for disease-resistant breeding and disease resistance improvement of hybrid rice, we carried out this study in 1977 and in the evening.