Data from: Inbreeding depression in intra-provenance crosses driven by founder relatedness in white spruce

Genetic means for height growth differed between intra- and
inter-provenance crosses, which we hypothesized was due partly to
unidentified relatedness among intra-provenance base parents resulting in
mild inbreeding and inbreeding depression among their offspring. A dense
array of 5,844 single nucleotide polymorphisms was used to directly
construct a genomic relationship matrix (G) that had four elements ranging
from 0.17 to 0.24, between five intra-provenance base parents. Adjusting
the numerator relationship matrix for this relatedness among base parents
produced inbreeding coefficients of F i ≈ 0.1 in their offspring, which
displayed depressed height growth. Accounting for inbreeding level as a
covariate in a mixed model decreased grossly overestimated (up to 2 ×)
dominance variance in models without the covariate adjustment. Height
growth decreased 39 cm (∼ 6 %) for every 0.1 increase in F i .