优良玉米自交系698-3的选育与应用

Breeding and Application of Excellent Maize Inbred Line 698-3

20世纪90年代,针对四川省及西南区对玉米品种的特殊要求,以从美国引进的优良杂交种为基础材料,采用现代遗传育种方法与分析测试技术相结合,不断进行改进和创新,提高自交系和杂交种的选育效率,育成集高配合力、高产、优质、多抗、耐密等优良性状于一体的自交系698-3。以该自交系为亲本已组配出成单18、成单23、正红6号等十一个高产、优质、多抗、专用玉米杂交种推广应用,取得了显著的社会经济效益。

In 1990＇, used the excellent maize hybrids as basis material introduced from America, maize inbred line 698-3 was selected which has some excellent characters such as high combining ability, highquality, multiple diseases-resistance and adaptability to high densities et al. The breeding of maize inbred line 698-3 has adopted the modified modem heredity breeding method and testing technology and considered the special requirements of environment to maize hybrids in Sichuan province and the Southwest Area in China. Eleven maize hybrids one of parents as 698-3 with such characters as high-yield, high-quality, disease-resistance, lodging-resistance and special usage were selected such as ＂Chengdan 18＂, ＂Chengdan 23＂,＂Zhenghong 6＂. These maize hybrids had extensive popularized and come into being remarkable society and economic effects.