Curated and Analysed Historical Barley (Hordeum sps.) Phenotypic Data from seven European genebanks

This dataset compiles historical phenotypic records of Barley (Genus: Hordeum) accessions evaluated across multiple years and locations by seven European genebanks participating in the AGENT project. The data originate from long-term evaluation trials conducted under diverse agro-ecological conditions and represent one of the most comprehensive multi-environment phenotypic collections of barley genetic resources in Europe. The dataset includes raw phenotypic data, outlier-corrected data, and best linear unbiased estimates (BLUEs) for a wide range of agro-morphological and developmental traits. Traits typically include, but are not limited to, days to heading (DTH), plant height (PH), thousand kernel weight (TKW), and other agronomic descriptors recorded according to national or genebank-specific descriptors. The outlier-corrected dataset represents cleaned phenotypic data after statistical identification and removal of erroneous values using a mixed-model approach. The BLUE dataset provides adjusted means per accession, accounting for design and replication effects, and serves as a robust input for downstream analyses such as genomic prediction and genotype x environment interaction studies. The author gratefully acknowledges the teams from IPK, INRAE and the CARC genebank for their valuable support and guidance, as well as the collaboration of all AGENT genebanks contributing to this study. References: 1) Bernal-Vasquez, AM., Utz , HF. & Piepho, HP. Outlier detection methods for generalized lattices: a case study on the transition from ANOVA to REML. Theor Appl Genet 129, 787–804 (2016). https://doi.org/10.1007/s00122-016-2666-6 2) Philipp N, Weise S, Oppermann M, Börner A, Graner A, Keilwagen J, Kilian B, Zhao Y, Reif JC and Schulthess AW (2018) Leveraging the Use of Historical Data Gathered During Seed Regeneration of an ex Situ Genebank Collection of Wheat. Front. Plant Sci. 9:609. doi: 10.3389/fpls.2018.00609