优质蛋白玉米(QPM)选育方法和发展策略

Strategies of Quality Protein Maize (QPM) Development

目前我国优质蛋白玉米(QPM)发展面临着种质基础狭窄、自交系来源复杂、病害严重和经济价值不能体现等问题。针对这些问题提出了一些解决方案①种质基础可通过直接利用CIMMYT现有种质,创建和利用半外来种质和将普通玉米自交系转为QPM近等基因系三种途径加以扩增。②根据种质特点、选育目标、抗穗腐病选育QPM自交系,发展多种类型的杂交种。③开发QPM的经济价值。

There are some problems to develope quality protein maize(QPM) in China, which are narrow germ- plasm, not clear pedigree of QPM line, heavy disease and low economic value efficiency. This article gave some ways to these questions. ①The way to enhance QPM germplasm is improving CIMMYT's QPM germplasm, developing, using semi-exotic germpalsm and improving normal lines to QPM lines. ②To establish the methods to select lines and combine hybrids. ③To exploit QPM economic value.