9 documents found, page 1 of 1
Beverage quality of Coffea canephora genotypes in the western Amazon, Brazil
Morais, Johnnescley Anes de; Rocha, Rodrigo Barros; Alves, Enrique Anastácio; Espindula, Marcelo Curitiba; Teixeira, Alexsandro LaraThis study aimed to evaluate the beverage quality of Coffea canephora genotypes in different environments of the western Amazon to assist plant selection and new cultivar development. To analyze beverage quality, samples of cherry coffee beans were collected separately for each genotype from clonal competition trials installed in the municipalities of Ouro Preto do Oeste, Alta Floresta do Oeste, Porto Velho, an...
Adaptabilidade e estabilidade da produção de café beneficiado em Coffea canephora
Rocha, Rodrigo Barros; Ramalho, André Rostand; Teixeira, Alexsandro Lara; Souza, Flávio de França; Cruz, Cosme DamiãoO objetivo deste trabalho foi comparar a capacidade discriminatória de métodos para seleção e recomendação de clones de cafeeiros da espécie Coffea canephora, considerando a interação genótipos x anos na distribuição da produtividade de café beneficiado, nos períodos de 2000 a 2004 e de 2007 a 2011. O efeito significativo da interação genótipos x anos indicou que existem clones que apresentaram desempenho não c...
Quality evaluation of Coffea canephora ‘Apoatã’ seeds for rootstock production
Espíndula, Marcelo Curitiba; Botelho, Frederico José Evangelista; Clemente, Aline da Consolação Sampaio; Teixeira, Alexsandro LaraCoffea canephora ‘Apoatã’ seeds are used for the formation of rootstocks for grafting of C. arabica seedlings. The quality of seeds and the individualization of used genotypes are prevalent factors for the formation of vigorous rootstocks that will enhance the formation of quality seedlings. The aim of the present study was to characterize and evaluate the seed quality of C. canephora ‘Apoatã’ genotypes for pot...
Different volumes of tubes for clonal propagation of Coffea canephora from seed...
Espindula, Marcelo Curitiba; Balbino, Tony José; Jaraceski, Rutinéia; Teixeira, Alexsandro Lara; Dias, Jairo Rafael MachadoThe aim in the present study was to evaluate the growth of Coffea canephora cv. ‘Conilon BRS Ouro Preto’ seedlings in different tube volumes. The experiment was performed at Embrapa Rondônia plant nursery in Ouro Preto do Oeste, Rondônia, Brazil, from July to November 2013. The treatments consisted of five tube volumes (50, 100, 170, 280 and 400 cm3) plus one control composed by polyethylene bags (11 cm width x...
CHARACTERIZATION OF BEVERAGE QUALITY IN Coffea canephora Pierre ex A. Froehner
Souza, Carolina Augusto de; Rocha, Rodrigo Barros; Alves, Enrique Anastácio; Teixeira, Alexsandro Lara; Dalazen, Janderson RodriguesDifferentiation of coffee according to its quality can result in added value. Both the coffee genotype and the environment influence beverage quality. The main species grown in the Amazon region is C. canephora, which includes two distinct botanical varieties: Conilon and Robusta. The aim of this study was to characterize beverage quality in C. canephora and distinguish the Conilon and Robusta botanical varieti...
Characterization of resistance response of Coffea canephora genotypes to Meloid...
Santos, Anderson Vieira; Rocha, Rodrigo Barros; da Silveira, Silvaldo Felipe; Teixeira, Alexsandro Lara; de Matos, Sara InáciaMeloidogynose is prominent among the factors that limit yield in C. canephora in the western Amazon, Brazil. It is caused by species of “root-knot nematode”; the most important and aggressive of these species for coffee is M. incognita. The aim of this study was to assist the selection of resistant genotypes by characterizing the reaction of 32 C. canephora clones to M. incognita (Est I2). These genotypes are s...
Genetic Components for fruit development and ripening of Coffea canephora pierr...
de Souza, Carolina Augusto; Rocha, Rodrigo Barros; Alves, Enrique Anastácio; Espindula, Marcelo Curitiba; Ramalho, André RostandAlthough normally measured in classes, fruit ripening cycle is a complex trait with expression governed by several genes influenced by the environment, which results in a quantitative trait of the continuous distribution. This study aimed to characterize the genetic components of Coffea canephora fruits ripening cycle in order to quantify the genotypic and environmental effects in the expression of this trait. ...
Characterization and use of genetic variability of bank active germplasm Coffea...
Rocha, Rodrigo Barros; Santos, Diogo Vieira; Ramalho, André Rostand; Teixeira, Alexsandro LaraEfficient strategies to manipulate the genetic variability are crucial to the success of breeding programs Coffea canephora. Combinations between divergent parents express greater heterosis effect, and the selection of matrices consider both genetic divergence and superior agronomic performance. The objective of this study was to quantify the genetic diversity of C. canephora accesses Active Germplasm Bank of E...
Principal component analysis on morphological traits in juvenile stage arabica ...
Teixeira, Alexsandro Lara; Gonçalves, Flávia Maria Avelar; Rezende, Juliana Costa de; Rocha, Rodrigo Barros; Pereira, Antonio AlvesIn plant breeding and selection, it is necessary to evaluate a great number of traits that are naturally associated. Thus, the use of multivariate analysis, such as Principal Component Analysis, can assist data interpretation. The aim of this study was to identify which morphological traits are of greatest importance to discriminate juvenile Coffea arabica genotypes. Cultivars, hybrids and some wild genotypes w...