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大斑病(Helminthosporium turcium)是玉米的主要病害之一。实践证明,改进玉米的遗传结构、推广抗病杂交种是减轻大斑病危害的经济有效措施。 1960年以前多数学者认为,玉米对大斑病的抗性属多基因遗传,部分显性,具有累加效应。这种抗性对已发现的大斑病的一号小种和二号小种都能抵抗。1961年Hooker等在自交系GE440和爆裂玉米“妇人指”品种中分别发现了对大斑病一号小种的一种独特的抗性。
Helminthosporium turcium is one of the major diseases of maize. Practice has proved that improving the genetic structure of maize and popularizing disease-resistant hybrids are cost-effective measures to reduce the risk of maculopathy. Most scholars believe that before 1960, the resistance of maize to big leaf spot was a multi-gene heredity and was partially dominant with additive effect. This resistance is resistant to the first and second races that have been identified as maculopathy. In 1961, Hooker et al. Found a unique resistance to the large spotted raccoon dog in inbred lines GE440 and pop corn.