Plant species delimitation method based on geometric morphometrics
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摘要: 物种鉴定是植物研究中的一个重要环节，尤其对近缘种的鉴定是个难点。野外调查和采样时通常使用直接观察形态特征的方法来鉴定物种，容易产生鉴定误差。本文以同域分布的两个近缘种槲树（Quercus dentata Thunb.）和槲栎（Q.aliena Blume）为研究对象，通过叶片形态研究，探讨几何形态测量学方法，并对该方法的植物物种鉴定能力进行总结。该方法除了具备操作简单和分析准确的优势外，还弥补了传统物种鉴定方法的不足，可显著提高植物物种的鉴定能力。Abstract: Species delimitation is an important part of plant research, but difficult for identification of closely related species. In field investigation and sampling, species are usually delimitated by direct observation of morphological characteristics, but often with bias, leading to delimitation errors. Currently, there is no accurate method for plant delimitation. In this paper, we analyzed two sympatrically distributed oak species, Quercus dentata Thunb. and Q. aliena Blume, using a landmark method, and summarized the species delimitation ability. This method is not only easy but also accurate when compared to the traditional morphologic method. Application of this approach can greatly improve plant species delimitation.
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Keywords:
- Morphological /
- Species delimitation /
- Landmark method /
- Quercus dentata /
- Quercus aliena
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