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KMID : 0368419920350040385
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Journal of Plant Biology
1992 Volume.35 No. 4 p.385 ~ p.392
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A Systematic Study on Polygonum sect. Tovara(Polygonaceae)
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Park, Chong Wook/朴鍾郁
Lee, Myung Gil/Shin, Hyun Chur/李明吉/申鉉哲
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Abstract
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Most of the species in Polygonum sect. Tovara show complicated patterns of morphological variation, resulting in taxonomic confusion in delimiting species boundaries and determining relationships. In this study, patterns of morphological variation in Polygonum sect. Tovara are examined using numerical analyses, and the taxonomic significance of the taxa n the section in reevaluated. Principal components analyses of the five taxa in the section using major morphological characters revealed the presence of three distinct groups in the section; these correspond to P. virginianum, P. filiforme, and P. neofiliforme. The results also indicated that P. virginianum var. glaberrimum is not taxonomically distinct, and tovara (= polygonum) virginiana var. kachina should be treated as a variety of P. neofiliforme. Preliminary results from the leaf flavonoid analysis of P. virginianum var. virginianum, P. filiforme, and P. neofiliforme also showed significant differences in their flavonoid profiles, and these observations strongly suggest that they should be recognized as distinct species.
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