Data from the study Gene flow effects on populations inhabiting marginal areas: origin matters

Data from a conducted study on the effects of different gene flow provenance on marginal populations of Mediterranean alpine <i>Silene ciliata</i> Pourret (Caryophyllaceae) replicated in three mountain ranges of Central Spain. We experimentally tested the effect of three different types of pollen-mediated gene flow on germination rate, seedling size and survival rate in marginal populations and assessed their effects by establishing <i>in situ</i> common gardens. The three different types of pollen-mediated gene flow were; within marginal population, and between marginal-marginal and optimal-marginal populations. To further assess the evolutionary potential of marginal populations, we performed a reciprocal sowing experiment and measured the same fitness components to determine the extent of local adaptation.<br><br>