Origin of the Diplazium hachijoense complex (Athyriaceae)
Origin of the Diplazium hachijoense complex (Athyriaceae)
复制标题
DOI：
10.3897/phytokeys.124.35242
复制
发表时间：
2019-06-18
期刊：
影响因子：
1.4
通讯作者：
Murakami, Noriaki
中科院分区：
文献类型：
--
作者：
Hori, Kiyotaka;Murakami, Noriaki
我们利用叶绿体trnL-F和低拷贝核标记AK1 DNA序列分析了羽扇豆属复合体的系统发育。从等位基因组成上看，三倍体无配子生殖物种似乎起源于三倍体无配子生殖物种和二倍体有性体物种通过反复杂交事件的杂交。这些结果表明，三倍体无配子蕨类可以通过产生减数分裂不规则的二倍体孢子来与二倍体有性种杂交。此外，本研究预测了与杂交相关的几个未知物种的参与。需要从中国及其邻近地区采集更多的丽蝇属物种样本，以确定未知物种与哈氏丽蝇复合体之间的关系。
We analyzed the phylogeny of the Diplazium hachijoense complex using plastid trnL-F and low-copy nuclear marker AK1 DNA sequences. Based on allele constitution, triploid apogamous species of the D. hachijoense complex appeared to have originated from the hybridization of triploid apogamous species and diploid sexual species by recurrent hybridization events. These results suggested that triploid apogamous ferns can achieve hybridization with diploid sexual species by producing diploid spores with irregular meiosis in sporogenesis. Furthermore, the present study predicted the involvement of several unknown species associated with hybridization. More sampling of Callipteris species from China and adjacent areas is required to determine the relationships among unknown species and the D. hachijoense complex.