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URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3352
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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.Item IPR 99 - Dwarf arabica coffee cultivar resistant to coffee ringspot virus(Crop Breeding and Applied Biotechnology, 2013-03) Sera, Tumoru; Sera, Gustavo Hiroshi; Fazuoli, Luiz Carlos; Bettencourt, Aníbal Jardim‘IPR 99’ was derived from a cross between “Villa Sarchi 971/10” and “Hibrido de Timor 832/2”. It is a dwarf cultivar, resistant to coffee ringspot virus, partially resistant to leaf rust with semi-late ripening. ‘IPR 99’ presents partial resistance to necrosis and mummification of young fruits on field conditions. It presents special cup quality and high yield in lower and higher temperature coffee regions in Paraná State.