Reisch, Christoph and Kellermeier, Jasmin (2007) Microscale variation in alpine grasslands: AFLPs reveal a high level of genotypic diversity in Primula minima (Primulaceae). BOTANICAL JOURNAL OF THE LINNEAN SOCIETY, 155 (4). pp. 549-556. ISSN 0024-4074,
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The microscale variation and spatial genetic structure of the alpine plant species Primula minima L. was analysed using AFLPs. AFLP analysis based on three primer combinations and 123 fragments revealed no identical genotypes among the 86 studied samples from a 300 300 cm plot. Variation within the study plot was high: Nei's gene diversity was 0.22, Shannon's information index 0.33 and the percentage of polymorphic bands was 60.9. Cluster analysis revealed four main groups of genetically similar individuals and mapping these individuals resulted in a clear spatial pattern, with samples from the same group often located close together. The observed microscale structure was corroborated using a Mantel test, which revealed significant correlation of genetic and spatial distances, and by the results of a spatial autocorrelation analysis that indicated a high level of similarity between adjacent samples. An analysis of molecular variance revealed clear differentiation (18%) between the spatial groups. Overall gene flow within the plot was 1.11 and ranged from 0.33 between the spatially most distant groups to 2.33 between directly neighbouring groups. The extraordinary level of diversity detected in this study indicates an unexpectedly strong relevance of reproduction by seed for the species P. minima in alpine grasslands. The strong microscale variation suggests, however, that there is limited dispersal of seeds. Clonal reproduction is of subsidiary importance to sexual reproduction and seems to occur only over very small distances. (c) 2007 The Linnean Society of London, Botanical Journal of the Linnean Society, 2007, 155, 549-556.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SPATIAL GENETIC-STRUCTURE; FRAGMENT LENGTH POLYMORPHISM; CLONAL DIVERSITY; SAXIFRAGA-CERNUA; MARKERS; PLANT; POPULATIONS; ALPS; PATTERNS; ISSR; Alps; autocorrelation; molecular marker; spatial genetic structure |
| Subjects: | 500 Science > 580 Botanical sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Ökologie und Naturschutzbiologie (Prof. Dr. Peter Poschlod) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Nov 2020 09:10 |
| Last Modified: | 25 Nov 2020 09:10 |
| URI: | https://pred.uni-regensburg.de/id/eprint/31822 |
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