Mechanisms of obtaining genetic diversity in apogamous fern species

一些蕨类植物在进化过程中停止了有性繁殖，在没有受精的情况下通过无融合生殖产生下一代。在这种情况下，他们所有的后代都有望在基因上完全相同。然而，无配子生殖蕨类植物经常表现出较大的遗传变异。在本研究中，我们阐明了无配子生殖蕨类物种可以通过杂交获得其近缘有性物种的遗传变异。我们还可以证明，无配偶制蕨类植物可以通过遗传分离产生遗传变异的后代。

Some species of ferns ceased their sexual reproduction in their evolutionary process and produce their next generation through apogamy without fertilization. In that case, all their offspring are expected to be genetically identical. However, apogamous fern species frequently show large genetic variation. In this study, we clarified that apogamous fern species can obtain genetic variation from its related sexual species through hybridization. We could also show that apogamous fern can produce genetically variable offspring through genetic segregation.