Abstract
AbstractSaxifraga paniculatais a rare and endangered glacial relict in central Europe. It shows high clonal reproduction. In this study, we analysed the clonal diversity and the subpopulation structure of three populations from the species main distribution area in Germany outside of the Alps (Swabian Alb, Black Forest, Nahe Mountains). We used RAPD analysis to detect the genetic variation inS. paniculataand found high levels of clonal diversity. The percentage of distinguishable genotypes (PD) within populations ofS. paniculatawas 1.0 and even spatially well defined mats of rosettes consisted of several genotypes. In a cluster analysis, the investigated populations were clearly separated from each other. However, we detected no genetic differentiation among subpopulations. We ascribe the high level of genotypic variability to the species' mixed mating system, which creates and maintains high levels of genetic diversity within the populations ofS. paniculata. Clonal reproduction seems, meanwhile, to be of secondary importance for the propagation of the species. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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