Raudnitschka, Dorit and Hensen, Isabell and Oberprieler, Christoph (2007) Introgressive hybridization of Senecio hercynicus and S-ovatus (Compositae, Senecioneae) along an altitudinal gradient in Harz National Park (Germany). SYSTEMATICS AND BIODIVERSITY, 5 (3). pp. 333-344. ISSN 1477-2000,
Full text not available from this repository. (Request a copy)Abstract
Introgressive hybridization of Senecio hercynicus and S. ovatus (Compositae, Senecioneae) was studied in a hybrid zone on the southern slopes of Mt Brocken (Harz Mountains, Germany). A total Of 415 plants representing 10 stands along an altitudinal gradient were investigated using multivariate statistical analyses of morphological characters and molecular markers (random amplified polymorphic DNA [RAPD]). Both types of traits detected pure S. hercynicus stands on the summit plateau, pure S. ovatus stands at the lowest elevations, and hybrid swarms at intermediate elevations. While morphological and molecular patterns coincided, some individuals in hybrid stands combined morphological patterns typical of S. ovatus with RAPID patterns typical of S. hercynicus, and vice versa. In general, introgression was symmetrical within stands, though one stand combined S. ovatus characters with the glandular hair typical for S. hercynicus, and two stands combined a S. hercynicus typical RAPID genotype with morphological characters shifted towards S. ovatus. Because pure stands of S. hercynicus occurred only on the summit plateau of Mt Brocken, and markers typical for S. ovatus were detectable in stands up to 1040 m a.s.l., future fusion or assimilation of the rare form, S. hercynicus, by the more widespread S. ovatus appears possible at Mt Brocken.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NEMORENSIS GROUP COMPOSITAE; POLYMORPHIC DNA RAPD; HYBRID ZONE; MOLECULAR EVIDENCE; VULGARIS L; INTERSPECIFIC HYBRIDIZATION; NATURAL HYBRIDIZATION; GENETIC-EVIDENCE; CLIMATE-CHANGE; ORIGIN; altitudinal gradient; Asteraceae; Harz mountains; hybridization; hybrid zone; introgression; RAPDs; Senecio |
| Subjects: | 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Group Plant Systematics and Evolution (Prof. Dr. Christoph Oberprieler) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Dec 2020 10:48 |
| Last Modified: | 01 Dec 2020 10:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32334 |
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