论文部分内容阅读
1 玉米四级种子生产程序的应用模式根据玉米异花授粉的遗传特点 ,其四级程序是从自交系育种者种子开始 ,进行连续 3级逐级繁殖 ,再经过杂交制种环节生产杂交种 (即自交系育种者种子→自交系原原种→自交系原种→杂交种 )。其程序如附图。附图 玉米杂交种的四级种子生产程序2
Application mode of corn four seed production program According to the genetic characteristics of cross-pollination of corn, the four-level program is from inbred breeder seed, continuous three levels of stepwise propagation, and then cross-hybrid production of hybrid seed production (Ie inbred breeder seed → inbred line primary stock → inbred line origin → hybrid). The procedure is shown in the attached figure. Figure 4 corn hybrid seed production process 2