Chloroplast DNA variation in Desmodium subgenus Podocarpium (Leguminosae): Infrageneric phylogeny and infraspecific variations
1994
Kajita, T. (Tohoku Univ., Sendai (Japan). Faculty of Science) | Ohashi, H.
Chloroplast DNA (cpDNA) restriction site variation was examined in five species of Desmodium subgenus Podocarpium (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 subgenus Dollinera was the sister group of subgenus Podocarpium 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 of D. podocarpum. Three groups within D. 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
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