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利用广西和引进的亚热带(热带)玉米品种资源,根据本区的生产、生态特点和要求,建立不同类型的杂交模型和改良综合种程序,先后育成制种产量高、易于推广的桂顶系列顶交种和桂集1号、桂综2号等群体改良种,以群体改良种为选系基础材料,选出的自交性状不易退化、抗性强的M_9、rM_9、白M_9和桂集C等家系,并育成各种性状更为均匀的桂单19号,桂三1、桂三2,辐三1号等杂交种。这种普及与提高相结合的育种体系,与本区的自然、生产条件和生产发展的趋势相适应,对广西玉米生产起到了积极的作用。
Based on the subtropical (tropical) maize variety resources introduced in Guangxi and other regions, different types of hybrid models and programs for improving comprehensive varieties were established according to the production and ecological characteristics and requirements in this area. Successively, Gui Ding series tops with high yield and easy popularization Cunninghamia lanceolata, Guiji No.1 and Guizheng2 were selected as the basic materials for the selection of lines. The selected self-resistant traits such as M_9, rM_9, M_9 and Gui C And other families, and bred a variety of characters more uniform Gui Shan No. 19, Gui San 1, Gui San 2, Radix 3 and other hybrids. This kind of popularization system combining popularization and improvement adapts to the nature, production conditions and trend of production and development in this area, and plays a positive role in the corn production in Guangxi.