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利用主基因－多基因混合遗传模型分析了５个抗感交组合对水稻白叶枯病菌抗性的基 因效应，结果表明５个组合中的３个在主基因抗性遗传符合孟德尔分离比的前提下存在多基 因抗性，而且这３个组合彼此间抗病基因的加性效应、主基因和多基因遗传方差及其遗传率存 在变异。说明水稻白叶枯病抗性虽以主基因作用为主，但考虑到抗性的持久性，建议在水稻白 叶枯病育种中构建主基因－多基因混合遗传体系，以有效抑制白叶枯病菌群体中小种的波动。
The main gene-polygene mixed genetic model was used to analyze the genetic effects of five resistance crosses on the resistance of X. oryzae. The results showed that three of the five combinations were inherited with the Mendelian segregation ratio There are polygenic resistance under the premise that the additive effects of these three combinations of the resistance genes and the variance of the major and polygenic genetic variability and their heritability. It is suggested that the resistance to bacterial leaf blight of rice is dominated by the major genes. However, considering the persistence of resistance, it is suggested that a major gene-polygene hybrid genetic system be constructed in the breeding of rice bacterial blight, Fluctuation of small and medium species in germs.