DNP data for 94 individuals from the SwAsp collection, described in Luquez et al. (2008). Details about sequencing and SNP calling can be found in Wang et al. (2018). Data is mapped agains the P. tremula genome assembly v1.1(Lin et al. 2018). References Lin Y-C, Wang J, Delhomme N, Schiffthaler B, Sundström G, Zuccolo A, Nystedt B, Hvidsten TR, de la Torre A, Cossu RM, et al. 2018. Functional and evolutionary genomic inferences in Populus through genome and population sequencing of American and European aspen. Proceedings of the National Academy of Sciences of the United States of America 115: E10970–E10978. Luquez V, Hall D, Albrectsen BR, Karlsson J, Ingvarsson P, Jansson S. 2008. Natural phenological variation in aspen (Populus tremula): the SwAsp collection. Tree Genetics & Genomes 4: 279–292. Wang J, Ding J, Tan B, Robinson KM, Michelson IH, Johansson A, Nystedt B, Scofield DG, Nilsson O, Jansson S, et al. 2018. A major locus controls local adaptation and adaptive life history variation in a perennial plant. Genome Biology 19: 72.