稻瘟病是水稻的主要病害之一,长期以来严重地威胁着水稻产量。例如,1982年我省早稻发生叶稻瘟病面积达十一多万公顷,损失相当严重。由此可见,选育抗病良种是一个十分重要的问题,而要选育出抗病良种,开展对稻瘟病的抗性遗传分析无疑是十分必要的。对于抗稻瘟病的研究,国内外学者都做了不少工作。据报道,日本清泽茂久等已先后从粳稻品种中鉴定出13个抗稻瘟病基因。国内外的研究报道,水稻对稻瘟病的抗性遗传是复杂的,但多半是受1-2对显性基因控制,且多属于细胞核遗传。我省的稻瘟病发生比较普遍,而且局部地区比较严重。为了搞好我省的抗病育种,工 Rice blast is one of the major diseases of rice and has long been a serious threat to rice yield. For example, in 1982, rice leaves in our province occurred in an area of ​​more than 110,000 hectares, the loss was quite serious. Therefore, it is very important to breed resistant varieties. It is undoubtedly necessary to breed resistant varieties and carry out genetic analysis of resistance to blast disease. For the study of blast resistance, many scholars at home and abroad have done a lot of work. It has been reported that Japan’s Shiro Masaaki has successively identified 13 blast resistance genes from japonica varieties. Studies at home and abroad reported that the resistance inheritance of rice to rice blast is complex, but most of them are controlled by 1-2 pairs of dominant genes and mostly belong to the nucleus. Rice blast occurred in our province is more common, but more serious in some areas. In order to improve the disease-resistant breeding in our province, workers