Agronomic performance and stability of andean common bean lines with white grains in Brazil

Abstract

This work evaluated the effect of genotype by environment interaction in Andean common bean lines with white grains, in Central Southern Brazil, to identify lines with high agronomic performance, stability and adaptability, aiming to meet domestic demand and to increase the Brazilian participation in the foreign market of common bean. Nineteen trials with twelve Andean lines were conducted in , 2008 Grain yield and other agronomic traits were evaluated. Data were subjected to analysis of variance and of adaptability/stability using Annicchiarico and modified AMMI methods. Significant differences were found between lines for all traits evaluated. Genotype by environment interaction was important for lines with Andean origin and white seed. The utilization of weighted mean of absolute scores and yield with the AMMI results enabled the identification of the most stable and adapted lines. Lines Poroto Alubia, CNFB 16211, Ouro Branco and WAF 160 were stable and adapted, using both methods. CNFB 16211 line presented high agronomic performance, stability and adaptability and therefore this line may be a new cultivar. USWA 70 and WAF 75 lines presented grain size similar to that required by the foreign market and superior to the Brazilian cultivars, besides favorable agronomic traits, and thus these lines may be indicated as new cultivars.Key words: Phaseolus vulgaris, special grains, adaptability, genotype by environment interaction, AMMI.Potencial agronômico e estabilidade de linhagens de feijoeiro-comum de origem andina com grãos brancos no Brasil ResumoOs objetivos deste trabalho foram avaliar o efeito da interação genótipos x ambientes em linhagens de feijoeiro-comum de origem andina com grãos brancos na Região Centro-Sul do Brasil e identificar linhagens com alto potencial agronômico, estabilidade e adaptabilidade, visando atender a demanda interna e possibilitar a participação brasileira no mercado externo. Dezenove ensaios constituídos por 12 linhagens foram conduzidos em campo na Região Centro-Sul do Brasil nos anos 2007, 2008 e 2009. Avaliaram-se a produtividade de grãos e outros caracteres de importância agronômica. Os dados foram submetidos a análises de variância e de adaptabilidade/estabilidade pelos métodos de Annicchiarico e AMMI com modificações. Houve diferenças entre as linhagens para todos os caracteres avaliados. A interação genótipos x ambientes foi importante na avaliação de linhagens de origem andina com grãos brancos. A utilização da média ponderada pelos escores absolutos e da produtividade com os resultados da análise AMMI facilitou a identificação de linhagens mais estáveis e adaptadas. As linhagens Poroto Alubia, CNFB 16211, Ouro Branco e WAF 160 são estáveis e adaptadas utilizando-se as duas metodologias. A linhagem CNFB 16211 apresenta alto potencial agronômico, alta estabilidade e adaptabilidade sendo, portanto, possível a sua indicação como nova cultivar. As linhagens USWA 70 e WAF 75 apresentam tamanho de grão semelhante ao exigido pelo mercado externo e superior ao das cultivar...

Simultaneous selection in beans for stability and high agronomic performance

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