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URI permanente desta seçãohttps://sbicafe.ufv.br/handle/123456789/3352
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Item Genetic parameters and chemical characterization of conilon coffee accessions under irrigation in the Cerrado(Editora da Universidade Estadual de Maringá - EDUEM, 2024-10-25) Brige, Felipe Augusto Alves; Amabile, Renato Fernando; Malaquias, Juaci Vitória; Celestino, Sonia Maria Costa; Fagioli, Marcelo; Delvico, Francisco Marcos dos Santos; Veiga, Adriano Delly; Sala, Pedro Ivo Aquino LeiteThe objective of this study was to identify the genetic, phenotypic and environmental parameters related to chemical compounds associated with beverage quality in a conilon coffee collection, grown in an irrigated system, in the Cerrado. The experiment was carried out at Embrapa Cerrados using green grains harvested in two years from 84 genotypes of the cultivar Robusta Tropical. Caffeine content, protein, ether extract, total soluble solids, pH and titratable acidity were evaluated. The data were subjected to analysis of variance. Significant differences were observed at 1% probability among accessions for all evaluated chemical characteristics in both harvest years. The high heritability, genetic coefficients of variation and selective accuracy reveal the potential for achieving genetic gains via the selection of genotypes adapted to the irrigated system in the Cerrado combined with high beverage quality.Item Yield, maturation cycle, and estimates of genetic parameters of Robusta coffee genotypes under irrigation in the Cerrado(Crop Breeding and Applied Biotechnology, 2019) Santin, Mateus Rollemberg; Coelho, Mateus Costa; Sayd, Ricardo Menezes; Peixoto, José Ricardo; Amabile, Renato FernandoEighty-five Coffea canephora genotypes were evaluated for three crop seasons under irrigation in the Cerrado of the Distrito Federal, Brazil, to characterize the population regarding phenotype, yield and maturation cycle. The experiment was conducted through the Basic Model of Repeatability without Design methodology. Regarding the cycles, genotypes were divided into four groups with the following periods, in days, from resumption of irrigation to the cherry stage: very early (243-255), early (256-267), medium (268-280), and semilate (281-293). For yield, the repeatability obtained was approximately 33%, a medium value that represents the proportion of the permanent phenotypic variance in relation to the total phenotypic variance. The average repeatability obtained surpassed 59%, and accuracy, with three crop seasons, reached 77%. The selection gains obtained may be higher than 38%. There are promising genotypes for cultivation in the region under study. The mean repeatability and the accuracy obtained favor selection based on phenotypes.