多倍体植物混合倍性种群的建立机制研究进展

刘勇波

The mechanism of constructing mixed-ploidy populations in polyploid species

Yongbo Liu

图1 多倍体形成途径的简单示意图。二倍体物种产生正常的单倍体配子和未减数分裂的配子, 未减数分裂配子可以和单体配子产生三倍体, 也可以融合产生同源四倍体; 同时也可以通过体细胞加倍产生同源四倍体; 异源四倍体通过物种之间未减数分裂配子的融合或者通过物种间的杂交再加倍产生。

Fig. 1 Formation paths to polyploid species. Diploid species produce normal haploid gametes and unreduced gametes. Unreduced gametes combine with haploid gametes to give rise to triploids or fuse to be autotetraploid species. Diploids can yield somatically polyploids. Allotetraploids are yielded through the fusion of unreduced gametes or the hybridization of haploid gametes from different species.