Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/37408
Título: Avaliação do teor de cafeína em folhas e grãos de acessos de café arábica
Título(s) alternativo(s): Evaluation of the caffeine content in leaves and grains of arabica coffee accessions
Palavras-chave: Café - Melhoramento genético
Seleção precoce
Coffee - Genetic improvement
Phenotypic correlation
Early selection
Data do documento: Jan-2012
Editor: Universidade Federal do Ceará
Citação: TEIXEIRA, A. L.; PRADO, P. E. R.; DIAS, K. O. das G.; MALTA, M. R.; GONÇALVES, F. M. A. Avaliação do teor de cafeína em folhas e grãos de acessos de café arábica. Revista Ciência Agronômica, Fortaleza, v. 43, n. 1, p. 129-137, jan./mar. 2012.
Resumo: The aim of this study was to identify, within the germplasm bank of the Minas Gerais state, Coffea arabica L. accessions with low levels of caffeine and check the correlation between grain and leaves in seedling stage, making possible the practice of early selection. Seventy-five coffe accessions (cultivars, hybrids and several wild genotypes) were evaluated from the coffee germplasm bank of the Minas Gerais state. In the correlation study, eight cultivars were used on randomized complete block design with three replications. Were evaluated the caffeine levels in the grains and the third and fourth pair of true leaves. Six accessions had caffeine levels in grains smaller than 0.88%. Was also detected a significant correlation between the caffeine levels in the third (0.69) and fourth (0.92) pair of leaves and grains. Genotypes were identified with low levels of caffeine and great yield may be used as parental in breeding programs. It is possible to perform early selection for caffeine content in coffee plants, still in the seedling stage, by evaluating the fourth pair of leaves.
URI: http://repositorio.ufla.br/jspui/handle/1/37408
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