Haploid breeding is a method of doubling the spontaneous or artifical haploid with colchicum, and selecting the super doubled lines. 单倍体育种是利用自然发生或人工培育的单倍体，经染色体加倍获得纯合二倍体，再从中选育自交系的方法。
Either of the two daughter strands of a duplicated chromosome that are joined by a single centromere and separate during cell division to become individual chromosomes. 染色单体染色体复制产生的两个单体中的一个，由细胞分裂过程中染色体在一个着丝点上分裂形成单个染色体。
