Comportamento de progênies de cafeeiro Icatu
Data
2006-07
Autores
Corrêa, Luiza Vasconcelos Tavares
Mendes, Antônio Nazareno Guimarães
Bartholo, Gabriel Ferreira
Título da Revista
ISSN da Revista
Título de Volume
Editor
Editora UFLA
Resumo
Avaliar a adaptabilidade e estabilidade de progênies de cafeeiro (Coffea arabica L.) é uma etapa importante anterior à recomendação das mesmas aos cafeicultores. Com este intuito, realizou-se este trabalho, para progênies da cultivar Icatu no sul de Minas Gerais, sendo avaliada a produtividade de grãos em sacas de 60 kg/ha/biênio. Os experimentos foram instalados em Machado e São Sebastião do Paraíso, em estações experimentais da EPAMIG. A interação progênies x biênios x locais teve efeito significativo, justificando a utilização de metodologias de estabilidade fenotípica para classificar as progênies. Foram utilizados dados de 14 progênies de cafeeiro em 12 ambientes, considerando-se cada biênio em cada local como um ambiente. As metodologias utilizadas foram: Annicchiarico (1992) e Lin & Binns (1988). As progênies Icatu IAC-4040-181, Icatu IAC-4040-315, Icatu IAC-4042-114, Icatu IAC-4042-222 e Icatu IAC-4045-47 se destacaram como as mais promissoras em termos de adaptabilidade e estabilidade, assim como em potencial produtivo (produtividades entre 53,68 e 59,35 sacas de 60 kg/ha/biênio). Por outro lado, as progênies Catuaí IAC-44 e Mundo Novo IAC-379-19, dentro do grupo em estudo, foram classificadas como as mais instáveis.
Adaptability and stability evaluations of coffee (Coffea arabica L.) progenies are an important stage prior to the recommendation of new lines. The objective this study was to evaluate bean productivity per biennium in 14 progenies from Icatu cultivar in 12 environments in southern Minas Gerais State, Brazil. The experiments were carried out in the counties of Machado and São Sebastião do Paraíso, in the experimental stations of EPAMIG. The progenies x biennium x locations interaction was significant, justifying the use of phenotypic stability methodologies for classification of progenies. Stability analyses were performed according to Annicchiarico (1992) and Lin & Binns (1988). Progenies Icatu IAC-4040-181, Icatu IAC-4040-315, Icatu IAC-4042-114, Icatu IAC-4042-222 and Icatu IAC-4045-47 stood out as the most promising concerning adaptability and stability, as well in yield potential (productivities between 53.68 and 59.35 bags of 60 kg/ha /biennium). On the other hand, Catuaí IAC-44 and Mundo Novo IAC-379-19, included within the progenies evaluated in this study, were classified as unstable progenies.
Adaptability and stability evaluations of coffee (Coffea arabica L.) progenies are an important stage prior to the recommendation of new lines. The objective this study was to evaluate bean productivity per biennium in 14 progenies from Icatu cultivar in 12 environments in southern Minas Gerais State, Brazil. The experiments were carried out in the counties of Machado and São Sebastião do Paraíso, in the experimental stations of EPAMIG. The progenies x biennium x locations interaction was significant, justifying the use of phenotypic stability methodologies for classification of progenies. Stability analyses were performed according to Annicchiarico (1992) and Lin & Binns (1988). Progenies Icatu IAC-4040-181, Icatu IAC-4040-315, Icatu IAC-4042-114, Icatu IAC-4042-222 and Icatu IAC-4045-47 stood out as the most promising concerning adaptability and stability, as well in yield potential (productivities between 53.68 and 59.35 bags of 60 kg/ha /biennium). On the other hand, Catuaí IAC-44 and Mundo Novo IAC-379-19, included within the progenies evaluated in this study, were classified as unstable progenies.
Descrição
Palavras-chave
Produtividade, Adaptabilidade, Estabilidade, Coffea
Citação
CORRÊA, L. V. T; MENDES, A. N. G; BARTHOLO, G. F. Comportamento de progênies de cafeeiro Icatu. Ciência e Agrotecnologia, Lavras, v. 30, n. 4, p. 618-622 jul./ago. 2006.