Our objective was to determine the genotype-environ- ment interaction (GxE) in a hybrid integrated by maize lines either carrying or not balanced lethal systems. Experiments were conducted in three locations over a period of two years considering each year- location combination as a different environment. Yield data were analysed using the Additive Main Effects and Multiplicative Inter- action (AMMI) model and the Sites Regression Analysis (SREG). Results were represented by biplots. The AMMI analysis was the best model for determining the interaction.
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Kandus et al. (2010) studied this question.