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Trichome morphology of Fallopia sect. Reynoutria (Polygonaceae) in Korea  

Moon, Hye-Kyoung (School of Biological Sciences, Seoul National University)
Park, Jin Hee (School of Biological Sciences, Seoul National University)
Park, Chong-Wook (School of Biological Sciences, Seoul National University)
Publication Information
Korean Journal of Plant Taxonomy / v.41, no.1, 2011 , pp. 51-57 More about this Journal
Abstract
The microstructure of the leaf epidermis and trichomes of Fallopia sect. Reynoutria are examined using scanning electron microscopy. Fallopia sachalinensis was distinguished from other taxa in this section by its prominent epicuticular wax layer consisting of protruding wax rodlets. In addition, epicuticular rodlets of F. sachalinensis individuals from Ullung Island and Dok Island appear to be thinner than those from other regions, including Japan and Sakhalin. The stomatal size appears to be related to the ploidy level in the sect. Reynoutria, as the hexaploids, octoploids and dodecaploids tend to have larger stomata as compared to tetraploids. Three basic types of trichomes were found in the section; (1) conical unicellular trichomes, (2) uniseriate filiform trichome consisting of 1-8 cells, and (3) peltate glandular trichomes. The trichome types and their distribution appear to be useful in distinguishing the taxa in the section.
Keywords
Fallopia sect. Reynoutria; leaf epidermis; stomata; trichomes; microstructure;
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