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Journal of Plant Research

, Volume 107, Issue 3, pp 349–354 | Cite as

Chloroplast DNA variation inDesmodium subgenusPodocarpium (Leguminosae): Infrageneric phylogeny and infraspecific variations

  • Tadashi Kajita
  • Hiroyoshi Ohashi
Original Articles

Abstract

Chloroplast DNA (cpDNA) restriction site variation was examined in five species ofDesmodium subgenusPodocarpium (Leguminosae; Papilionoideae; Desmodieae). Twenty four phylogenetically informative cpDNA mutations were scored. The cladistic analysis of characters based on the 24 mutations resulted in the most parsimonious tree which supports the monophyly of the subgenus.Desmodium elegans of subgenusDollinera was the sister group of subgenusPodocarpium in this tree. The groupings obtained from the cpDNA characters were consistent with the present infrageneric classification system for the subgenus except for the infraspecific taxa ofD. podocarpum. Three groups withinD. podocarpum, which were incongruent with the infraspecific classification of the species, were distinguished by a total of four site mutations. The first group consisted of subsp.podocarpum, subsp.fallax, and subsp.oxyphyllum var.oxyphyllum; the second subsp.oxyphyllum var.oxyphyllum; and the last subsp.oxyphyllum var.oxyphyllum and var.mandshuricum.

Key words

Chloroplast DNA Desmodium Leguminosae Molecular phylogeny SubgenusPodocarpium Restriction site variation 

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Copyright information

© The Botanical Society of Japan 1994

Authors and Affiliations

  • Tadashi Kajita
    • 1
  • Hiroyoshi Ohashi
    • 1
  1. 1.Biological Institute, Faculty of ScienceTohoku UniversitySendaiJapan

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