玉米是我国种植面积最大的粮食作物,相应的玉米种子作为重要的农业生产资料,对增加产量和改善品质起着至关重要的作用。由于目前玉米种质资源分散,企业品种创新能力弱,玉米新品种选育在低水平上徘徊不前。因此,商业化育种是培育突破性优良品种、保障国家粮食安全的有效途径和必经 Corn is the largest cereal crop in China and the corresponding corn seed, as an important agricultural means of production, plays a crucial role in increasing yield and improving quality. Due to the current decentralization of corn germplasm resources, enterprise innovation ability is weak, breeding new varieties of corn at a low level of stagnancy. Therefore, commercial breeding is an effective way and essential for cultivating breakthrough fine varieties and ensuring national food security