Effects of phenotypic variability among different varieties on the oxygen and hydrogen isotope composition of grains in winter wheat - Primary Data

Primary data supporting the publication “Effects of phenotypic variability among different varieties on the oxygen and hydrogen isotope composition of grains in winter wheat” in Isotopes in Environmental and Health Studies.d¹⁸O and d²H values of leaf tissue water and dried grain material of different winter wheat varieties (<i>Triticum aestivum</i> L.) collected from field trials that were set up to test the performance of 36 different winter wheat varieties in the 2017 and 2018 growing seasons across Switzerland. The field trails were organized by the Swiss Institute for Sustainability Sciences (ISS) Agroscope. We obtained dried grain samples from four sites in 2017 and leaf samples for water analysis of three sites in 2018 (See publication Fig. 1, Table 1). The field trials at the different sites were set up in identical layouts, with the exact same 36 winter wheat varieties, each grown on 7 to 10 m² plots at each site. The 36 varieties used in the trials differed in the 2017 and 2018 season. Water d¹⁸O and d²H values were measured after Newberry et al. (2017). Bulk dried tissue d¹⁸O values were analysed after Cueni et al. (in review).