DOI: 10.5061/dryad.dz08kps4d
title: Genotypes and geographic positions of 5797 European white oaks from 636 locations genotyped at 355 nuclear SNPs and 28 maternally inherited SNPs of the chloroplast and mitochondria

description: The data set is the result of genetic inventory on 5797 white oaks
 collected at 636 locations all over Europe. The oaks trees were assigned
 in forest inventories as Quercus robur L. (3342), Quercus petraea Matt.
 (2090), Quercus pubescens Willd. (170) or as unspecified Quercus. spp.
 (195). The sampling had a focus on central and east Europe as well as the
 Black Sea and Caucasus region. All individuals were genotyped at 355
 nuclear SNPs and 28 maternally inherited SNPs of the chloroplast and
 mitochondria. The combination of the maternally inherited SNPs resulted in
 26 different haplotypes. The genotype of each individual is one row in the
 csv-file “genotypes”. The genotypes at the nuclear markers are diploid and
 represented by two columns per gene marker. The genetic information at the
 organelle genome is haploid. For each of these gene markers one column is
 used. Genotypes are coded by Arabic numbers. The meaning of the numbers is
 explained in the table “coding genotypes” in a second csv-file. Each
 Individual has a unique "Genotype_ID" and a
 "Thuenen_Sample_ID". The "Thuenen_Sample_ID" is a
 unique ID that serves to identify the sample in our depository at the
 Thuenen Institute of Forest Genetics. Each individual has data on the
 geographic origin given as "Longitude" and "Latitude"
 in decimal degrees. For each individual the putative oak species
 ("Putative species") as it has been assigned in the forest
 inventories is given. The numbers of the "Haplotype" represent
 the multilocus combination of the mitochondrial and chloroplast SNPs of
 that individual.
description: We
 collected samples (cambium or leaves) from 5,797 white oak trees at 636
 locations all over Europe. The majority of the samples came from central
 and eastern Europe as well as from the Black Sea and Caucasus region. As
 putative species, the samples included 3342 <em>Q. robur</em>,
 2090 <em>Q. petraea</em>, 170 <em>Q.
 pubescens</em> and 195 unspecified white oak samples. The presumed
 species of the samples were derived from the species classification of the
 stands of origin done by forests experts in frame of forest inventories.
 The sample size varied be-tween 1 and 48 trees at each location. The vast
 majority (95%) of the samples were collected in forest stands, whereas few
 samples were taken from provenance trials. Most material is from adult
 trees with diameters at breast height above 20 cm.
 For all samples, 355 nuclear SNPs and 28 maternally inherited
 chloroplast and mitochondria SNPs were analysed based on targeted genotyping by
 sequencing. The details of the used gene markers are given by Degen et al.
 (2021).
description: The genotype of each individual is one row in the csv-table “genotypes”.
 Each Individual has a unique "Genotype\_ID" and a
 "Thuenen\_Sample\_ID". The "Thuenen\_Sample\_ID" is a
 unique ID that serves to identify the sample in our depository at the
 Thuenen Institute of Forest Genetics. Each individual has data on the
 geographic origin given as "Longitude" and "Latitude"
 in decimal degrees. For each individual the putative oak species
 ("Putative species") as it has been assigned in the forest
 inventories is given. The numbers of the "Haplotype" represent
 the multilocus combination of the mitochondrial and chloroplast SNPs of
 that individual. The genotypes at the nuclear markers are diploid and
 represented by two columns (a + b) per gene marker. The genetic
 information at the organelle genome is haploid. For each of these gene
 markers one column is used. Genotypes are coded by Arabic numbers. The
 meaning of the numbers is explained in the csv-table “coding genotypes”.