Data from: Impact of negative frequency-dependent selection on mating pattern and genetic structure: a comparative analysis of the S-locus and nuclear SSR loci in Prunus lannesiana var. speciosa

Mating processes of local demes and spatial genetic structure of island
populations at the self-incompatibility (S-) locus under negative
frequency-dependent selection (NFDS) were evaluated in Prunus lannesiana
var. speciosa in comparison with nuclear simple sequence repeat (SSR) loci
that seemed to be evolutionarily neutral. Our observations of local mating
patterns indicated that male-female pair fecundity was influenced by not
only self-incompatibility, but also various factors such as kinship,
pollen production and flowering synchrony. In spite of the mating bias
caused by these factors, the NFDS effect on changes in allele frequencies
from potential mates to mating pollen was detected at the S-locus but not
at the SSR loci although the changes from adult to juvenile cohorts were
not apparent at any loci. Genetic differentiation and
isolation-by-distance over various spatial scales were smaller at the
S-locus than at the SSR loci, as expected under the NFDS. All ele sharing
distributions among the populations also had a unimodal pattern at the
S-locus, indicating the NFDS effect except for alleles unique to
individual populations probably due to isolation among islands, although
this pattern was not exhibited by the SSR loci. Our results suggest that
the NFDS at the S-locus has an impact on both the mating patterns and the
genetic structure in the P. lannesiana populations studied.