Adaptability and Stability of Corn Hybrids in Southern Brazilian Environments

Carlos Busanello, Velci Queiroz de Souza, Antonio Costa de Oliveira, Maicon Nardino, Diego Baretta, Braulio Otomar Caron, Denise Schmidt, Victoria Freitas de Oliveira, Valmor Antonio Konflanz

Abstract


The objective of this study was to identify, among the 27 hybrids evaluated, the best adaptability and stability responses for corn grain yield in five environments. The experiments were conducted in the 2009/2010 crop seasons in a randomized complete block design with three replications. There was significant G x E interaction effects (p ≤ 0.05) only for the yield and cob mass characters. Among the hybrids tested, 14 of them were ranked as responsive to environmental improvement for grain yield. The other genotypes have good performance in harsh environments. For the stability analysis, significance was found for the hybrids 5, 7 and 27. For cob mass, all hybrids showed significant adaptability, for stability, only genotypes 20 and 24 expressed significance.


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DOI: http://dx.doi.org/10.5539/jas.v7n9p228

Journal of Agricultural Science ISSN 1916-9752 (Print) ISSN 1916-9760 (Online)

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