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玉米大斑病是由Exserohilum turcicum(Pass.)(其有性阶段为Setosphaeria turcica)所引起的,可利用多基因和单基因的抗性有效地控制。对于大斑病的多基因抗性早在35年之前已经得到鉴定。后来育种的程序则发展用多基因抗性以改进玉米的群体。玉米大斑病菌小种专化的抗性通常是由单一显性基因所控制,表现为褪绿斑和减少病原孢子的产生。由H t~1
The maize leaf spot is caused by Exserohilum turcicum (Pass.) (Its sex stage is Setosphaeria turcica) and can be effectively controlled by the multigene and single gene resistance. Polygenic resistance to maculopathy has been identified as early as 35 years ago. Later breeding programs then developed polygenic resistant populations to improve maize. Species-specific resistance of S. turcica is usually controlled by a single dominant gene, which manifests as chlorotic spots and reduces the production of pathogenic spores. From Ht ~ 1