Temporal stability of spatial cytotype structure in mixed-ploidy populations of Centaurea stoebe.

ABSTRACT: Spatial segregation of cytotypes reduces the negative effect of frequency-dependent mating on the fitness of minority cytotype(s) and thus allows its establishment and coexistence with the majority cytotype in mixed-ploidy populations. Despite its evolutionary importance, the stability of spatial segregation is largely unknown. Furthermore, closely related sympatric cytotypes that differ in their life histories might exhibit contrasting spatial dynamics over time. We studied the temporal stability of spatial structure at a secondary contact zone of co-occurring monocarpic diploids and polycarpic tetraploids of Centaurea stoebe, whose tetraploid cytotype has undergone a rapid range expansion in Europe and became invasive in North America. Eleven years after the initial screening, we

SUBMITTER: Mraz P 

PROVIDER: S-EPMC9683110 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature