Genotype-by-Environment Interaction in Tepary Bean (Phaseolus acutifolius A. Gray) for Seed Yield

Genotype-by-environment (GEI) analysis guides the recommendation of best-performing crop genotypes and production environments. The objective this study was to determine extent GEI on seed yield in tepary bean for genotype cultivation drought-prone Forty-five genetically diverse were evaluated under non-stressed drought-stressed conditions two seasons using a 9 × 5 alpha lattice design with three replications four testing Data collected (SY) days physiological maturity (DTM) computed combined variance, additive main effect multiplicative interaction (AMMI), best linear unbiased predictors (BLUPs), stability index (YSI), weighted average absolute scores (WAASB) index, multi-trait (MTSI), superiority measure. AMMI revealed significant (p < 0.001) GEI, accounting 13.82% total variation. Genotype performance variable across test environments, allowing selection best-suited candidates target environment. environment accounted substantial variation 52.62%. first second principal component axes 94.8 4.7% AMMI-2 model, respectively, surmountable due GEI. 2 model family sufficient guide high-yielding stable genotypes. Based measure (Pi), broad adaptation, following identified as suited environments: G40138, G40148, G40140, G40135, G40158. selected are recommended breeding Malawi or other related agroecologies.