| 摘要: |
| 沙菜属（Hypnea）是卡拉胶生产的重要经济栽培物种，但该属具有复杂的命名史和物种分类难题，其广泛的地理分布、高度的遗传变异以及较强的表型可塑性，存在许多同物异名和形态趋同的现象，导致其物种鉴定中出现了一系列的争议。因此，本文尝试总结分析沙菜属分类中存在的问题，以及涉及"物种"定义的初步探讨，特别是基因树与物种树的关联性，以期为解决该属分类学问题提供一定的参考思路。 |
| 关键词: 沙菜属 分类 隐存种 物种 分子标记 |
| DOI：10.11759/hykx20201026002 |
| 分类号:Q945.5 |
| 基金项目:国家自然科学基金面上项目（31670199，31400186）；天津市教委科研计划项目（JW1705） |
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| Discussion on the taxonomic problems of the genus Hypnea |
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LIU Jin-mei, HUANG Bing-xin, MA Xin, WANG Xue-cong, YAN Jing, YAN Pan-zhu, DING Lan-ping
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Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
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| Abstract: |
| The genus Hypnea has a significant economic value for carrageenan production; however, it has a complex nomenclatural history and taxonomic problems because of its wide geographical distribution, high genetic variation, strong phenotypic plasticity, and numerous phenomena of synonyms and morphologic convergence, all of which have led to a series of controversies in species identification. Therefore, this paper attempts to summarize and discuss the taxonomic problems of Hypnea as well as explore the definition of species, particularly the relationship between a gene tree and species tree, to provide some valuable references for the classification of Hypnea. |
| Key words: Hypnea classification cryptic species species molecular markers |
