点式突破玉米育种方法的实践与探索

点式突破玉米育种法是一种综合的优化育种法。该方法将目前应用的杂优群划分为两群即种质资源群与生产优势群,有针对性地对生产优势群进行改良。从确立玉米育种目标选择突破点,然后构建创新核心种质资源,在选育过程中选育方法多样灵活,采用"一对一"法测定配合力,多点试验统计分析,结果准确可靠,构建适度规模的循环育种体系。

Practice and Exploration for Method of Point Breakthrough Maize Breeding

Point breakthrough maize breeding is an integrated economic and effective breeding method. By this method, the heterosis groups is divided into two groups, such as germplasm resource group and production superiority group. The method of point breakthrough maize breeding is to improve the production superiority group on purpose. Breakthrough has been selected since the maize breeding target is established, then innovative core germplasm resource is constructed. In the breeding process, the ways of breeding and selection are various and flexible. The combining ability is tested by one-on-one method. Test varieties and over surveyor's pole contrasting varieties are definite. The statistical analysis is based on muti-point test. Then the result is accurate and reliable.