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Dahlia species grow wild in several places of Mexico. A series of Dahlia species have been propagated in Denmark and some of these plants have been studied at the Chemical Institute, University of Aarhus in Denmark. More than 40 compounds have been characterized after isolation from roots and tubers or from aerial plant material. The major compounds were acetylenes that occur in these Dahlia species and other genera of Heliantheae, a tribe within Asteraceae. Dahlia merckii Lehm is unique both chemically and in terms of its chromosome number, whereas Dahlia tubulata is also unique in the chemical sense that it contains many thiophene compounds some of which are acetylenes, a new discovery among the Dahlia species. |
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