INRAE's Walnut Genetic Resources Observation (Experimental data 2017-2019)

Persian or English walnut (Juglans regia L.), the walnut species cultivated for nut production, is one of the oldest food sources known and is grown worldwide in temperate areas. In this work, experimental data have been collected between 2017 and 2019 in order to perform genome-wide association analyses (GWAS) on the main traits of interest in the walnut industry, related to phenology and fruit quality. The panel is constituted of 170 accessions of the 259 accessions of the INRAE's Walnut Genetic Resources. All accessions are grafted trees mostly located in the arboriculture experimental unit in Toulenne (latitude 44°34’37.442’’N – longitude 0°16’51.48’’O), near Bordeaux (France). For some accessions, several data have been also available from the French walnut experimental station of Creysse (latitude 44°53’16.529’’N – longitude 1°36’23.838’’E). The dataset consists in the raw phenotypic datafile, in "csv" format.