Fenotypical adaptability and stability of upright peanut genotypes

Abstract

The objective of this work was to estimate stability and adaptability parameters, related to pod and seed yields, of nine peanut genotypes evaluated in eight environments of Pernambuco State, Brazil. A randomized block design was used with five replicates. The method of Eberhart & Russell was utilized. The genotypes BR1, BRS Havana, BRS 151 L7, CNPA 280 AM e L7 Beje showed high pod and seed production, with yield averages of 3,106 kg ha^-1 and 2,068 kg ha^-1, respectively. However, taking into account both pod and seed yields, BRS 151 L7 showed high production, broad adaptability and previsible behavior in the environmental conditions evaluated; and genotypes BR 1, BRS Havana and L7 Beje were also highly adapted and stable, but only for seed yield.