论文部分内容阅读
玉米杂交种的质量在于亲本自交系,自交系的质量在于保纯。为了确保自交系种子纯度和质量,经过几年的试验、研究,我们总结出了玉米自交系繁殖同时三步走和分收、贮藏的保纯方法。 1 自交系繁殖同时三步走实行自交与姊妹交隔年交替繁殖,采取一套(选株套袋自交或姊妹交)、二繁(套袋果穗混合脱粒繁殖)、三繁(用二繁的种子大面积繁殖)、四制(用三繁的自交系种子制种)的生产体系。
The quality of maize hybrids lies in the parental inbred lines, the quality of the inbred lines is pure. In order to ensure the purity and quality of seeds in inbred lines, after several years of experiments and studies, we concluded that the inbred lines of maize inbred at the same time three-step walk and collection, storage of pure method. 1 inbred line breeding at the same time three-step implementation of selfing and sibling year alternate breeding, take one (selected bagging self or sister pay), two Fan (bagging ear hybrid threshing and breeding), three Fan (with two Large-scale breeding of multiply seeds), and four-cropping (seed production of three-flowering inbred lines).