杂交育种利用自然界的变异,固然可以选育出优良品种,但是,只靠这种现成的变异远远不能满足育种工作的要求。因此,需要人工创造新的变异类型,来扩大选择来源。应用得最广泛,积累经验最多的是品种间杂交育种。杂交育种是利用杂交方法,将杂交亲本的遗传物质基础集中到杂种里,再通过基因重组合,使杂种后代分离出多种多样的植株。然后,在一定栽培条件下,把具有双亲优良性状的单株选择出来,培育成新品种。 Although it is impossible to breed fine varieties by using the variation in nature, hybrid breeding can not meet the requirements of breeding work. Therefore, the need to manually create new types of mutation, to expand the source of choice. The most widely used, the most accumulated experience is cross-breeding between varieties. Hybridization is the use of hybridization methods, hybrid parents will be the basis of genetic material in hybrids, and then through gene recombination, the offspring of hybrids isolated a wide variety of plants. Then, under certain cultivation conditions, the individual with good traits of parents was selected and cultivated into new varieties.