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Flow cytometric measurements do not reveal different ploidy levels in Minthostachys (Lamiaceae) |
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| Authors: | A N Schmidt-Lebuhn J Fuchs M Kessler |
| Institution: | 1. Abteilung Pflanzen?kologie, Institut für Biologie, Martin-Luther-Universit?t Halle-Wittenberg, Am Kirchtor 1, 06108, Halle, Germany 2. Abteilung Cytogenetik und Genomanalyse, Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung Gatersleben, Gatersleben, Germany 3. Abteilung Systematische Botanik, Albrecht-von-Haller-Institut für Pflanzenwissenschaften, Georg-August-Universit?t G?ttingen, G?ttingen, Germany |
| Abstract: | Ten of the 17 species of the taxonomically difficult Andean mint genus Minthostachys (Lamiaceae) were submitted to flow cytometric measurements of nuclear DNA content to test the hypothesis of the occurrence of different ploidy levels within the genus. Nuclear DNA content was found to vary from 1.643 to 1.775 pg, i.e by only ca. 8% between individual accessions, thus providing no evidence for polyploidy in Minthostachys. While these results do not preclude the possibility that the genus contains polyploid species nor the occurrence of heteroploidy with nearly identical nuclear DNA contents, they suggest that polyploidy did not play a major role in its diversification. |
| Keywords: | flow cytometry Lamiaceae Minthostachys Mu?a nuclear DNA content Peperina |
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