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采用２ 个抗病品系和２ 个感病品系作为试材，并配制杂交组合，采用真叶期人工接种病菌鉴定Ｆ１ 、Ｆ２ 、Ｂ１Ｃ１ 、Ｂ１Ｃ２ 杂种抗性的方法，研究了大白菜对黑斑病的抗性遗传规律。结果表明，大白菜对黑斑病的抗性为显性遗传，并受单个显性基因控制。
Two resistant lines and two susceptible lines were used as test materials and hybrid combinations were prepared. The hybrids were identified by artificial inoculation of true leaf stage to identify the F1, F2, B1C1 and B1C2 hybrids. The effects of Chinese cabbage on black spot The genetic law of resistance. The results showed that the resistance of Chinese cabbage to black spot was dominantly inherited and controlled by a single dominant gene.