Productivity, adaptability and phenotypic stability of tomato cultivars grown under different environmental conditions

Abstract

The objective of this work was to evaluate productivity, adaptability and phenotypic stability of six tomato genotypes in Marília, SP, Brazil. The experiments were carried out at nine environments (six of them under conditions of protected cultivation and three under open air conditions), with six genotypes (Carmen, Diva, Donador, Graziela, Vita and HE-295), in a randomized block design, with four replications. There were significant differences among environments, independent of cultivation system. General average of protected cultivations overcame free cultivations considering yield, although the general average of free cultivations was overcame for mean fruit weights. All genotypes, except 'HE-295', showed high stability, with prominence for cultivars Carmen, Donador and Vita, which showed higher mean yield, and general adaptability and stability in all environments studied. For mean fruit weights, cultivars Diva and Vita were the only ones that showed wide adaptability for both environments and highly predictable behavior, with mean fruit weights superior to general average.