摘要
由于目前我国玉米育种种质资源的匮乏,给玉米育种带来极大的影响。外来种质的引进及利用是解决我国玉米育种种质资源狭窄的重要途径;而玉米杂种优势群及其模式的研究又是玉米育种的重要基础性工作。文章从种质的改良利用、引进及创新方法进行了阐述,同时分析了我国的杂种优势群体及模式的变化。
Becausing of deficient of genetic background ,It brings the great effects to breeding in maize. Introgression and application of exotic germplasm is a key way to solve the straitness of genetic background in corn breeding in China. and the study of heterotic group pattern＂ of maize is about enhancing breeding efficiency.the paper expounds the evaluation,the way ment and creating new germplasm,and the change of heterotic group and pattern germplasm maize. importand enhancement and creating new germplasm,and the change of heterotic group and pattern of maize.
基金
"河南省玉米育种重大专项"资助(0620010200)
关键词
玉米种质
种质改良
杂优模式
Maize germplasm
Germplasm enhancement
Heterosis
