Determination of Genotype × Environment Interaction for Seed Yield in Oilseed Flax (Linum usitatissimum L.) Genotypes

This research investigated the performance of oilseed flax (Linum usitatissimum L.) genotypes cultivated under varying conditions in Edirne province during 2023 and 2024, focusing on grain yield and Genotype x Environment (GE) interactions by various analytical approaches. Fifteen genotypes were used in the study. The trials were conducted using a randomized complete block design with three replications. To assess the stability of genotypes regarding grain yield, the following parameters were employed: S?¹?, S?²?, S?³?, S???, NP?¹?, NP?²?, NP?³?, NP???, W?², ?²?, s²d?, b?, CVi, ????, ??, KR parameters, and GGE biplot analysis. The analysis of variance indicated that genotypes, environments, and genotype-environment interaction exerted highly statistically significant impacts (p<0.01) on grain yield. The stability assessments revealed that the G5 genotype distinguished itself through superior yield and stability, while the G10 and G6 genotypes had high grain yield and broad adaptability. The GGE biplot analysis indicated that these genotypes exhibited extensive adaptability and effectiveness of some environments in distinguishing between them.