论文部分内容阅读
玉米自交系纯度的高低，直接影响到杂交种子的质量和产量，进而影响到大田玉米产量。因此，搞好自交系的提纯复壮、防杂保纯，是生产优质、高产杂交种子的必备条件。１ 自交系防杂保纯的基本方法１．１ 一次套袋繁殖三四年用的原种：将育种单位提供的高纯度标准自交系种子（?
The purity of maize inbred lines directly affects the quality and yield of hybrid seeds, which in turn affects the yield of field maize. Therefore, to do a good job of purification, rejuvenation and hybridization of inbred lines is a prerequisite for the production of high quality and high yield hybrid seeds. 1 inbred lines of the basic method of anti-hybrid pure 1.1 a bagging breeding three or four years with the original species: the breeding units to provide high purity standard inbred seed (?