文献类型： 外文期刊

作者： Hu, Yan ¹ ; Sun, Li-Wei ¹ ; Neo, Mokgolodi C. ¹ ; Zhang, Yan-Xia ¹ ; Wen, Chun-Xiu ³ ; Xie, Xiao-Liang ³ ; Liu, Yu-Jun ¹ ;

作者机构： 1.Beijing Forestry Univ, Coll Biol Sci & Biotechnol, Beijing 100083, Peoples R China

2.Wenshan Univ, Dept Biochem, Wenshan 663000, Peoples R China

3.Hebei Acad Agr & Forestry Sci, Med Herbs Res Ctr, Shijiazhuang 050051, Peoples R China

关键词： classification;cluster analysis;Perilla;pollen grain;scanning electron microscopy;taxonomy;variety

期刊名称：JOURNAL OF SYSTEMATICS AND EVOLUTION （ 影响因子：4.098； 五年影响因子：4.735 ）

ISSN： 1674-4918

年卷期： 2010 年 48 卷 2 期

页码：

收录情况： SCI

摘要： Unresolved controversies concerning the classification of the monotypic genus Perilla L. have hindered the complete understanding and subsequent sustainable use of these vital food, oil, and medicinal plants to their full potential. In the present study, we used scanning electron microscopy to obtain palynological evidence from 21 samples of Perilla plants from seven provinces in China as a potential further attribute for classification. The findings showed that pollen grains from plants of 11 samples were oblate, whereas those of the other 10 were suboblate; there were no prolate pollen grains observed. Pollen grains from all samples had diverse exine ornamentations. Based on whether they had continuous tecta on the ornamentations, the pollen grains from the 21 samples were classified into two categories: (i) 14 with irregular reticulates; and (ii) seven with continuous tecta with no perforations. None of the samples was bireticulate. The ornamentation pattern and size of pollen grains jointly provided evidence that it is appropriate for use in classifying the genus Perilla into five varieties of one species. Furthermore, by comparison, it is concluded that the shapes and exine ornamentations of Perilla are unique among those of the seven genera already investigated in the subfamily Lamioideae. Using these pollen features, Perilla can be easily distinguished from the two other subtribes (Menthinae Brig. and Thyminae Brig.) in the same tribe, supporting the view that Perilla and the other four related genera can be classified into one subtribe (Perillinae).