Phylogeny of Japanese species of Sanguisorba(Rosaceae)based on RFLPs of PCR-amplified cpDNA fragments

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  • MISHIMA MISAKO
    Department of Biology, Faculty of Science, Tokyo Metropolitan University
  • ITO MOTOMI
    Department of Biology, Faculty of Science, Chiba University

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  • 日本産ワレモコウ属(バラ科)の葉緑体DNAのPCR-RFLPsに基づく系統解析
  • Phylogeny of Japanese species of Sangui

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Abstract

The RFLPs of the PCR-amplified cpDNA of seven Japanese species of Sanguisorba were investigated. Twelve restriction site mutations were phylogenetically informative. On the basis of Wagner parsimony analysis, a single most parsimonious tree with two clades was generated : one clade comprising S. albiflora, S. hakusanensis, S. japonensis, and S. stipulata, and the other comprising S. obtusa, S. officinalis, and S. tenuifolis. Morphologically, however, S. obtusa in the latter clade closely resembles the former four species of the other clade. Three possibilities are discussed to explain such a discrepancy between the species relationships supported by morphological evidence and those suggested by molecular evidence. Molecular evidence further does not support close relationship among S. albiflora, S. obtusa, and S. hakusanensis that are suggested by Nordborg earlier.

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