摘要
品种改良是实现我国玉米总产量持续提高的关键要素之一。在耕地面积持续减少的前提下,通过品种改良提高单产水平,对我国玉米生产至关重要。就品种改良对我国玉米单产水平增加的贡献,我国玉米品种改良进程的特点和发展要求,以及我国玉米应用性基础种质的主要来源、现状和生产需求进行了分析和思考。最后,对我国玉米品种改良中的耐密性育种与营养高效育种、继续种质扩充的主要方式、建立高效玉米种质评价和扩充体系等问题进行了讨论,旨在为玉米遗传育种提供一些基础信息。
Improvement of maize hybrids was one of the key factors for the continuous increasing of corn production in China. Under the premise of durative decreasing of cultivated area, the increasing of yield potential by breeding would be crucial for maize production. In this paper, we summarized the contributions of variety improvement to the increasing of yield per unit area in China, the characters of improvement of Chinese maize hybrids and future requirement, as well as the enhancement and status quo of breeding germplasm and potential development in China. Also, we discussed the high density and high nutrient-efficiency breeding strategy in China, the method of germplasm enhancement, and establishment of high efficiency germplasm evaluation ＆ enhancement platform, which were exprected to provide some basic information for maize breeding.
出处
《中国农业科技导报》
CAS
CSCD
北大核心
2013年第3期30-35,共6页
Journal of Agricultural Science and Technology
基金
农业部保种项目(NB2013-2130135-25-04)
国家国际科技合作项目(2011DFA30450)资助
关键词
玉米
品种改良
种质资源
maize
variety improvement
germplasm
