Genotype x environment interaction, adaptability and stability of 'Piel de Sapo' melon hybrids through mixed models

The aim of this study was to evaluate the genotypic performance of twelve Piel de Sapo melon hybrids in the Mossoro-Assu agricultural region, state of Rio Grande do Norte, Brazil, using mixed models. Adaptability and stability of the predicted genotypic values were studied by the Harmonic Mean of the Relative Performance of Genotypic Values (HMRPGV) procedure. The traits evaluated were yield (Mg ha(-1)) and soluble solids content (degrees Brix). The genotype x environment interaction was significant for the two variables in all the hybrid groups evaluated, with predominance of the complex part of the interaction, and this makes the selection process more difficult. Considering the genotypic values predicted, the HMRPGV method allowed identification of hybrids with greater genotypic adaptability and stability. The experimental hybrids HP-09 and HP-06 were more promising for growing in the Mossoro-Assu agricultural region since they have high stability and adaptability, as well as high yield and soluble solids.