adaptação e estabilidade de produção de cultivares e linhagens-elite de feijão no estado do rio grande do sul adaptability and yield stability of common bean cultivars and elite lines in the state of rio grande do sul
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2008
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Abstract
O objetivo deste trabalho foi avaliar a adaptação e a estabilidade da produção de linhagens-elite de feijão para o cultivo no Estado do Rio Grande do Sul (RS). Assim, oito linhagens-elite desenvolvidas a partir de programas de melhoramento de feijão do país e quatro cultivares comerciais foram avaliadas em 12 ambientes, no RS, durante o biênio 2004 e 2005. As estimativas de adaptabilidade e de estabilidade foram obtidas pelos métodos de Eberhart & Russel e de Lin & Binns, modificado por Carneiro. Interação genótipos com ambientes significativa foi observada para a produtividade de grãos, indicando resposta diferenciada dos genótipos aos locais, aos anos e às épocas de semeadura. Os resultados obtidos evidenciaram que as metodologias foram concordantes na identificação de genótipos com estabilidade para a produtividade de grãos ("CHP 99-54" e "SCS 202 Guará"), com adaptação a ambientes favoráveis ("TB 98-20") e a ambientes desfavoráveis ("Guapo Brilhante"). Os genótipos "CHP 99-54" e "SCS 202 Guará" apresentam produtividade de grãos acima da média geral, alta adaptação e estabilidade de produção, sendo indicados ao registro no Registro Nacional de Cultivares (RNC), para o cultivo no RS, pelo programa de melhoramento obtentor da cultivar.
The objective of this research was to evaluate the adaptability and yield stability of common bean elite lines in the Rio Grande do Sul State. Eight elite lines of the different breeding programs of Brazil and four comercial cultivars were evaluated in the 12 environment, in the RS, during the biennium 2004 and 2005. The adaptability and stability estimates were obtained for the methods of Eberhart & Russel and Lin & Binns, modified to Carneiro. Significative genotypes with environments interaction was to observated to grain yield showed different response to the locations, years and planting times. The results showed that methods were coincided to identify genotypes with yield stability ('CHP 99-54' and 'SCS 202 Guará'), with adaptability to favorable environment ('TB 98-20') and unfavorable environment ('Guapo Brilhante'). The 'CHP 99-54' and 'SCS 202 Guará' genotypes showed grain yield above general mean, broad adaptability and yield stability, and the genotypes are recommend to register in the RNC, to cultivation in the RS state, for the breeding program obtainment of the common bean cultivar.
The objective of this research was to evaluate the adaptability and yield stability of common bean elite lines in the Rio Grande do Sul State. Eight elite lines of the different breeding programs of Brazil and four comercial cultivars were evaluated in the 12 environment, in the RS, during the biennium 2004 and 2005. The adaptability and stability estimates were obtained for the methods of Eberhart & Russel and Lin & Binns, modified to Carneiro. Significative genotypes with environments interaction was to observated to grain yield showed different response to the locations, years and planting times. The results showed that methods were coincided to identify genotypes with yield stability ('CHP 99-54' and 'SCS 202 Guará'), with adaptability to favorable environment ('TB 98-20') and unfavorable environment ('Guapo Brilhante'). The 'CHP 99-54' and 'SCS 202 Guará' genotypes showed grain yield above general mean, broad adaptability and yield stability, and the genotypes are recommend to register in the RNC, to cultivation in the RS state, for the breeding program obtainment of the common bean cultivar.
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ribeiro2008cinciaadaptao
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| Authors | ;Nerinéia Dalfollo Ribeiro;Irajá Ferreira Antunes;Juarez Fernandes de Souza;Nerison Luis Poersch |
| Journal | Trials |
| Year | 2008 |
| DOI |
10.1590/S0103-84782008000900004
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