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报道了5个稻瘟病菌杂交组合的后代菌株在4个水稻品种和4个龙爪稷品种上的致病性分离结果。其中水稻菌3514－R－24对龙爪稷品种EC3的非致病性，龙爪稷菌株G10－1对水稻品种Keneana的非致病性及水稻菌3472－R－12对龙爪稷品种EC3、EC21的非致病性，可能是受一对基因控制的，因为它们与致病性菌株杂交后，致病性后代与非致病性后代的分离比为1∶1。3472－R－12对两个龙爪稷品种的非致病性基因可能就是相同的，因为对EC3致病的后代菌株，对EC21也都是致病的，反之亦然。其他组合中的龙爪稷菌对水稻的非致病性和水稻菌对龙爪稷品种的非致病性，则可能受一对以上的基因控制。
The pathogenicity of the progeny strains from 5 cross combinations of Magnaporthe grisea in four rice cultivars and four cultivars was reported. Among them, the non-pathogenicity of paddy rice 3514-R-24 to agave EC3, the non-pathogenicity of Agaricus Blazei strain G10-1 to rice variety Keneana and the EC3 of rice paddy 3472-R- , The non-pathogenicity of EC21 may be controlled by a pair of genes because the segregation ratio of pathogenic offspring to non-pathogenic offspring after they have been crossed with pathogenic strains is 1: 1.3472-R-12 The non-pathogenic genes may be identical to both of the two landraces, since the progeny strains that cause disease to EC3 are also pathogenic to EC21 and vice versa. Non-pathogenicity of rice from other combinations of L. limonicis to rice and non-pathogenicity of rice to paddy varieties may be controlled by more than one pair of genes.