Acessibilidade / Reportar erro

Phenotypic stability in common bean estimated with supplementary genotypes

The objective of this study was to evaluate the performance of the 19 lines and cultivars of common bean through AMMI (Additive Main Effects and Multiplicative Interaction) method, using supplementary genotypes (GS) in VCU trials of 2005/2006/2007 of São Paulo State. Random block design was used, with three replications per parcels of 4,0 m length each, the two centrals being the experimental useful one. G x E interaction was highly significant and allowed the identification of genotypes with greater stability and adaptability to the assayed environments. The genotypes 'BRS-Grafite', 'LP 9979' and 'BRS-Pontal' (rainy season), 'CV-48', 'IAC-Alvorada', 'IAC-Diplomata', 'LP 02-130', 'IAC-UNA' and 'Gen 96A98-15-3-52-1' (dry season), 'BRS-Requinte', 'Z-28' and 'LP 01-38' (winter season), 'IAC-UNA', 'Z-28' and 'BRS-Grafite' (joint seasons) were the most stable. Among these, 'LP 9979', 'BRS-Pontal', 'BRS-Requinte', 'LP 01-38' and 'Z-28' were the genotypes, with highest yield thus the most promising. 'CV-48', 'IAC-Alvorada' and 'IAC-UNA' genotypes were the closest to the supplementary genotype, in dry seasons. However, consider in seasons altogether no genotype was close to the supplementary genotype.

Phaseolus vulgaris; common bean; G x E interaction; adaptability


Instituto Agronômico de Campinas Avenida Barão de Itapura, 1481, 13020-902, Tel.: +55 19 2137-0653, Fax: +55 19 2137-0666 - Campinas - SP - Brazil
E-mail: bragantia@iac.sp.gov.br