Background and aims Local adaptation to edaphic conditions might produce edaphic specialization, possibly limiting the potential for persistence in novel environments. Therefore, evaluating how different populations can cope with novel edaphic environments is crucial to forecast species survival. Methods We conducted a reciprocal transplant experiment in greenhouse conditions in five Dianthus rupicola populations. We character...

Genome size (GS) is known to be highly variable among angiosperm species. However, this variation can also occur within species. Both interspecific and intraspecific variations in GS have been often found to be linked to phenotypic traits. Therefore, selective pressures acting on these target traits may indirectly shape GS evolution within and among species. However, the processes linking selective pressures to GS evolution ar...

Understanding the mechanisms underlying fast diversifications is central to evolutionary biology. This can be partly achieved by focusing on intrinsic reproductive barriers that emerge during early stages of divergence in fast‐radiating groups. Here, we explored the mechanisms underlying the divergence of two ecotypes of the Dianthus rupicola complex, which belong to the Eurasian clade of the hyperdiverse genus Dianthus , the...

An increased divergence in characters between species in secondary contact can be shaped by selection against competition for a common resource (ecological character displacement, ECD) or against maladapted hybridization (reproductive character displacement, RCD). These selective pressures can act between incipient species (reinforcement) or well-separated species that already completed the speciation process, but that can sti...

High pollinator specificity and the potential for simple genetic changes to affect pollinator attraction make sexually deceptive orchids an ideal system for the study of ecological speciation, in which change of flower odour is likely important. This study surveys reproductive barriers and differences in floral phenotypes in a group of four closely related, coflowering sympatric O phrys species and uses a genotyping‐by‐sequenc...