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Genetic variability and morphology of tri- and tetraploid members of the Sorbus aria complex in northern Bavaria

Title data

Feulner, Martin ; Weig, Alfons ; Paule, Juraj ; Gregor, Thomas ; Schott, Lea F. ; Aas, Gregor:
Genetic variability and morphology of tri- and tetraploid members of the Sorbus aria complex in northern Bavaria.
In: Preslia. Vol. 89 (2017) Issue 3 . - pp. 275-290.
ISSN 0032-7786
DOI: https://doi.org/10.23855/preslia.2017.275

Abstract in another language

The Sorbus aria complex in the Franconian Jura, northern Bavaria, consists of the sexual diploid S. aria s. str. and putative apomictic polyploids, among them S. collina and S. danubialis. Here, the genetic and cytotypic structure of the S. aria complex and the proportion of clonal versus variable genotypes with a special focus on S. collina are studied using nuclear microsatellite markers, flow cytometry and multivariate morphometrics. In the Franconian Jura the tetraploid S. collina is the most frequent taxon in the S. aria complex. It consists of six closely related clones and a high number of unique genotypes, which were found in 70% of the populations studied. Morphologically, most of the clones and the unique tetraploid genotypes are not significantly differentiated. Therefore, all of them could be assigned to S. collina. Mechanisms that could result in the high number of genotypes within S. collina are accumulations of mutations, remnant sexuality, multiple polyploidization events and backcrossing. The results show that S. collina is a genetically quite variable facultative apomictic taxon. Triploids were identified sporadically and the microsatellites pointed to an origin from repeated hybridization events between diploid S. aria s. str. and S. collina.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER141972
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Service Facilities > ├ľkologisch-Botanischer Garten
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Research Institutions
Research Institutions > Research Centres
Service Facilities
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 570 Life sciences, biology
500 Science > 580 Plants (Botany)
Date Deposited: 11 Aug 2017 06:10
Last Modified: 05 Jan 2018 10:42
URI: https://eref.uni-bayreuth.de/id/eprint/39087