ABSTRACT: The mineral composition of grape berries is shaped simultaneously by genotype and by growing season, yet the relative contribution of each source, and of their interaction, is rarely quantified within a single experimental framework. We determined 13 macro- and micronutrients (N, P, K, Ca, Mg, S, Mn, Fe, Zn, B, Cu, Na, and Cl) in four berry fractions (seed, skin, pulp, and juice) of eight Vitis labrusca cultivars (Concord, Niagara, Steuben, Rizessi, Rizpem, Rizellim, Ülkemiz, and Çeliksu) grown under a uniform, nonirrigated, and non-fertilized regime at a single site over two consecutive growing seasons (2024 and 2025). Data were analyzed within each fraction using a factorial model containing block, year, cultivar, and the year × cultivar interaction, with false-discovery-rate corr
