玉米自交系是选配玉米杂交种的基础材料,只有收集保存一定数量性状优良、整齐一致、配合力高的骨干自交系,即具有育种目标所要求的丰富的育种材料,才能配制优质、高产、适应性强的优良杂交种。同时一些好的自交系在生产上使用若干年后,往往性状发生变 Maize inbred lines are the basic materials for the selection of maize hybrids. Only the backbone inbreds with good trait, neatness and high combining ability can be collected and preserved, that is, the abundant inbred lines with breeding target can be prepared, High yield, good adaptability of the excellent hybrids. At the same time some good inbred lines in the production of a few years later, often traits change