Clustering of environments in response to the cultivation of black oat genotypes

The aim of this research was to study the genotype-environment interaction with a focus on decomposing the simple and complex parts of the interaction of black oat genotypes and clustering similar environments. The experiment was conducted at the Federal University of Santa Maria, Campus de Frederico Westphalen/RS (Brazil), in 2018, 2019, 2020, and 2021, using five lines and two cultivars of black oat in a randomized block experimental design. The traits evaluated were total dry mass and seed productivity. After verifying the presence of interaction between genotypes and environments, the interaction was decomposed into simple and complex parts. The UFSMFW 2-07 line stood out in terms of total dry mass and seed productivity. The total dry mass and seed productivity of black oat genotypes were highly influenced by environmental conditions over the four years of cultivation, highlighting the complexity of studying the genotype-environment interaction for more than one trait of interest at the same time.