摘要
五、六十年代，广西玉米杂交种以优良农家品种作为亲本系选育和推广品种间杂交种为主。七十年代大量引进外来玉米种质，以选育和推广单交种为主。但八、九十年代主要以墨黄９号群体改良种为育种核心种质，以选育和推广顶交种和三交种为主。五十年来，广西玉米单产水平的提高，主要得益于玉米种质资源的扩增、改良和创新。目前，广西玉米育种所利用的种质主要为６种杂种优势群，即墨黄９群、Ｌａｎｃａｓｔｃｒ群、Ｒｅｉｄ群、旅大红骨群、唐四平头群和其它种质群。玉米杂交优势利用的模式主要有３种，即Ｌａｎｃａｓｔｅｒ群×墨黄９群，Ｒｅｉｄ群×墨黄９群、其它种质群×黑黄９群，杂优模式过于单一，种质基础十分狭窄，需要进一步加大玉米种质资源的扩增、改良和创新的力度。
Analysis of germplasms utilized in maize breeding and commercial ed production was conducted. The results demonstrated that the increase of maize yield level in Guangxi during 1950 - 1990 years was profited chiefly from the broadening, improvement and invention of maize germplasm resources. The main maize germplasms in Guangxi were divided into six heterosis groups: Moyellow 9, Lancaster, Reid, Ludohonggu, Sipingtou and Others. Three main heterotic patterns which widely ed in Guangxi were proposed: Lancaster group/Moyellow 9 groups, Reid groups/Moyellow 9 grouch and other group/Moyellow 9 groups. The results the showed that both maize germplasm base and heterotic patterns in Guangxi were very narrow. Broadening, improvement and invention of maize germplasm resources in Guangxi should be strengthened.
出处
《西南农业学报》
CSCD
北大核心
2000年第3期104-108,共5页
Southwest China Journal of Agricultural Sciences
