The dataset "Pinaster_genotypes_Lacanau&Tocchi_10652SNPs.xlsx" contains individual genetic information and was produced by a consortium of European research Intitutes. For the data collection, needles were sampled from a total of 1,500 individuals from 2 maritime pine populations located in French (Lacanau) and Italian (Tocchi) Genetic Conservation Units (GCUs). 10,652 SNPs were genotyped from the multispecies 4TREE SNPs chip (chip produced within the framework of the B4est project). This dataset was used to carry out a quantitative genetics and evolutionary biology study (i.e., parentage/mating model analyses and heritability estimates).

The dataset "WD_Lacanau-Tocchi.xlsx" contains individual adult tree relative wood density measured in situ using a SC-650 resistograph (Rinntech, Heidelberg, Germany). Median values were calculated for each tree from individual density profiles using the R package densitR (https://github.com/krajnc/densitr; Krajnc, 2020).

The dataset "" contains individual adult tree fitness values (effective fecundity in the form of the number of established offspring computed using MEMM and CERVUS), standardized phenotypic traits (growth and functional traits) measured and predicted using in-situ direct assessment, drone flights and near-infrared spectroscopy for each of the adult trees in Lacanau and Tocchi populations and covariates used in this study (data paper for phenotypic data to be published soon). These datasets were used to compute selection gradient and heritability estimates.