Measurement of male and female morphologies in Mercurialis annua

We provide a dataset documenting the changes in male and female
morphological traits after evolution at low- and high-density during three
generations in the dioecious plant species Mercurialis annua. Our dataset
corresponds to results from an experimental evolution protocol in which we
have measured male and female traits after the evolution of ten
experimental independent populations at the two contrasting densities.
Seeds were initially collected in various populations of the species range
and grown for three generations in a common garden, which aim was to build
a seed bank with large genetic variance for experimental evolution. The
seeds resulting from this initial generation (G0) have than been grown to
build ten experimental populations (POP in the dataset) that were affected
either to low or high density (TREAT in the dataset). Each population was
grown separately from the other populations and its assigned density was
applied during the last four weeks of growth. After three generations of
evolution at their assigned density, seeds resulting from the third
generation of evolution were grown in a common garden with two spatial
blocks (BLOCK in the dataset) in which we recorded the spatial position of
each plants (x and y in the dataset) measured vegetative and reproductive
traits in male and female plants.