Are there two varieties in Hylomecon japonica (Papaveraceae)? Morphological and molecular evidence
Are there two varieties in Hylomecon japonica (Papaveraceae)? Morphological and molecular evidence
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DOI：
10.5735/085.054.0620
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发表时间：
2017-11-01
影响因子：
0.7
通讯作者：
Wang, Dong
中科院分区：
文献类型：
--
作者：
Xu, Xiao-Dong;Wang, Dong
樱属（Papaveraceae）是其属的唯一种。两个品种，日本血吸虫变种解剖和日本血吸虫变种subincisa，已经被确认，但许多形态中间的存在使得种内分类群的争议。基于自然种群和nDNA （NADPH）和cpDNA （rpoB-trnC和trnG内含子区）分子序列的观察，我们的研究结果表明，被鉴定为不同品种的样品分散并嵌套在被鉴定为粳稻变种的植物亚枝中。总的来说，所有的日本血吸虫样本都是单系的；叶片形态的连续变化进一步支持了这一点。结果，这两个种下名称与日本血吸虫同义。我们的研究强调了在描述一个形态可变的物种内的种下分类群时，评估形态变化和分子数据的全部范围的重要性。
Hylomecon japonica (Papaveraceae) is the sole species of its genus. Two varieties, H. japonica var. dissecta and H. japonica var. subincisa, have been recognized, but the presence of numerous morphological intermediates renders the intraspecific taxa controversial. Based on observations of natural populations and molecular sequences of nDNA (NADPH) and cpDNA (rpoB-trnC and trnG intron regions), our results show that the samples identified as distinct varieties are scattered and nested within the subclades of plants identified as H. japonica var. japonica. As a whole, all samples of H. japonica are monophyletic; this is further supported by the continuous variation in leaf morphology. As a result, the two infraspecific names are synonymized with H. japonica. Our study emphasizes the importance of evaluating the full range of morphological variation and molecular data when describing infraspecific taxa within a morphologically variable species.