玉米大斑病可以引起玉米严重减产,为此抗病育种已成为玉米育种的重要目标之一。单基因抗性与多基因抗性相结合,是当前国内外抗病育种的主攻方向。玉米抗大斑病的特性主要来于多基因抗性,近年来引进了一批具有不同抗大斑病单基因抗性材料,如Ht1、Ht2、Ht3、HtN等。如何把单基因抗性与多基因抗性结合起来应用,就成为当前玉米抗病育种中需要解决的问题。 Maize leaf spot can cause severe maize yield reduction, so breeding for disease resistance has become one of the important objectives of maize breeding. The combination of single gene resistance and multi-gene resistance is the main direction of resistance breeding at home and abroad at present. In the recent years, a number of single-gene resistance materials, such as Ht1, Ht2, Ht3 and HtN, have been introduced. How to combine single gene resistance with multi-gene resistance has become a problem that needs to be solved in current disease-resistant breeding of maize.