多穗玉米一般有单秆多穗和分蘖多穗两种类型。一些育种家认为,培育多穗玉米是育种的一个新途径。实际上,利用果穗较小而多穗的原始材料(爆裂种等)作为多穗性给体,与单穗玉米进行回交转育,选育成果穗较大的多穗自交系,然后以此自交系作亲本进行杂交,其多穗性在杂种一代不但能够较稳定地遗传下来,而且果穗可以增大,产量显著提高。 Multi-spike corn generally have more single spike and tiller more spike two types. Some breeders believe that cultivating more ears of corn is a new way of breeding. In fact, the use of raw materials with smaller ears and more spikes (such as popping species) as the multi-spike donor, backcrossing with single-ear corn, breeding more panicle inbred lines with larger ears This inbred line as the parent for hybridization, its panicle in the hybrid generation not only can be more stable inheritance, and the ear can be increased, yield increased significantly.