Biblioteca do Café
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Item Agronomic performance of coffee in response to framework pruning in cycles of the “safra zero”(Editora UFLA, 2020) Maia, Pedro Lage; Tassone, Guilherme Augusto Teixeira; Nadaleti, Denis Henrique Silva; Botelho, Cesar Elias; Botelho, Deila Magna dos Santos; Moreira, Priscila Carvalho; Carvalho, Gladyston RodriguesIn this paper, we aimed at selecting genotypes of Coffea arabica L. that are responsive to framework pruning, with high productive potential and desirable agricultural features. We evaluated 18 progenies in the F5 generation, 8 of them being from the group Catucaí (breeding of seedlings of Red Catuaí with coffee seeds of the Icatu germplasm) and ten descendants from the Timor Hybrid (breeding of the Red and Yellow Catuaí with the Timor Hybrid), as well as two commercial cultivars as control (Tupi IAC 1669-33 and Obatã IAC 1669-20). The experiment was carried out at the experimental field of the Federal University of Lavras. The coffee was pruned in August 2014 after the sixth crop and once again in August 2016, being two cycles in the “safra zero” system. The design used was in randomized blocks (RBD) with three repetitions and 20 treatments (18 progenies and two commercial cultivars) totaling 60 experimental plots. We evaluated the area under the progress curve of incidence and severity of leaf rust and cercosporiosis, the productivity (sacs ha-1), sieve #16 and over (%), mocha-type grains (%) and apparent specific mass of grains (tonm-3). The genotype 12 (H516-2-1-1-18-1-4) was responsive to the framework pruning and kept its productivity stable in both pruning cycles, being efficient in such system of crop conduction, besides presenting low incidence and severity of coffee leaf rust and cercosporiosis and high sieve.Item Características sensoriais e agronômicas de acessos de coffea do banco de germoplasma de Minas Gerais na safra 2017/2018(Embrapa Café, 2019-10) Ferreira, Waldinei Henrique Batista; Rezende, Juliana Costa de; Madeira, Natália da Silva; Fassio, Larissa de Oliveira; Santos, Greice Gonçalves; Nadaleti, Denis Henrique Silva; Pereira, Antônio Alves; Oliveira, Antônio Carlos Baião de; Carvalho, Gladyston Rodrigues; Botelho, Cesar EliasBancos de germoplasma são fontes de variabilidade genética e consequentemente fontes de características agronômicas desejadas nos programas de melhoramento. Com esse trabalho objetivou-se caracterizar 18 acessos de C. arabica L. do Banco de Germoplasma de Minas Gerais (BAG-MG), da Empresa de Pesquisa Agropecuária de Minas Gerais (EPAMIG). O BAG-MG está sediado em Patrocínio-MG e conta com mais de 1500 acessos, dentre os quais estão inseridos muitas cultivares e mutantes, além de valioso material coletado na Etiópia representando formas silvestres espontâneas e subespontâneas de C. arabica L. Os acessos foram avaliados após a colheita de 2018 por meio da produtividade, percentagem de frutos chochos e também qualidade de bebida. Os dados de produtividade foram transformados pela Raiz quadrada - SQRT (Y) e posteriormente submetidos à análise de variância no software SISVAR, juntamente com os dados de percentagem de frutos chochos e qualidade de bebida. As médias obtidas foram submetidas ao teste de Scott Knott a 5% de significância. Por meio das análises estatísticas, todas as características avaliadas foram divididas em dois grupos. A produtividade variou de 11,3 a 25 sacas por hectare no grupo destaque. O percentual de frutos chochos demonstrou amplitude de 1 a 17% no primeiro grupo, composto por 15 acessos e de 26 a 39% no segundo grupo. Doze acessos foram considerados cafés especiais segundo os parâmetros de avaliação SCAA – Specialty Coffee Association of America (Associação Americana de Café Especiais). Há variabilidade entre os acessos estudados, sendo que oito se demonstraram superiores aos demais, se destacando em todas as caraterísticas avaliadas: Bourbon Vermelho MG0011, Bourbon Vermelho MG0025, Caturra Vermelho MG0187, Caturra Amarelo Colombiano MG0194, Pacamara MG0223, Híbrido de Timor UFV 376-01 MG0289, Mundo Novo x S795 UFV 315-04 MG0420 e Caturra Amarelo x CIFC H 358/5 UFV 320-22 MG0694. Esses acessos são promissores e podem ser utilizados nos futuros programas de melhoramento.Item Morphoagronomic and sensory performance of coffee cultivars in initial stage of development in cerrado mineiro(Editora UFLA, 2019-04) Pereira, Dyanna Rangel; Aguiar, João Augusto Rodrigues de; Nadaleti, Denis Henrique Silva; Fassio, Larissa de Oliveira; Carvalho, João Paulo Felicori; Carvalho, Samuel Pereira de; Carvalho, Gladyston RodriguesQuality, in a condition of typical cultivation of the Cerrado. The trial was carried out in the municipality of Monte Carmelo - MG, in randomized block design, with four replicates. Morphoagronomic characteristics were evaluated 15 months after the implantation of the crop. The productivity and, subsequently, the quality of the beans, were evaluated at 18 months. Statistical analyzes were performed using the Genes software. The data were submitted to analysis of variance. The F test was used to determine the significance of treatments. The means were grouped by the Scott-Knott test (1974) at 5% probability and the experimental precision was verified by the estimation of the experimental variation coefficient (CV) and the selective accuracy. The sensory attributes were evaluated in a radar diagram, called “Sensogram”. Genetic variability was observed among cultivars for the vegetative characters. The cultivars Catuaí Vermelho IAC 144 and MGS Aranãs stood out as more productive, with a high percentage of sieve 16 and above and low percentage of grain type mocha. All the cultivars stood out as special, with emphasis on the cultivar Bourbon Amarelo IAC J10 in the wet processing and Catuaí Vermelho IAC 144 in the natural processing.Item Simultaneous selection in coffee progenies of mundo novo by selection indices(Editora UFLA, 2019-01) Tasson, Guilherme Augusto Teixeira; Nadaleti, Denis Henrique Silva; Carvalho, Gladyston Rodrigues; Pereira, Fernanda Aparecida Castro; Andrade, Vinícius Teixeira; Botelho, César EliasCoffee cultivars that are better adapted and more productive can help reduce production costs and make coffee cultivation more profitable. The Mundo Novo cultivar has stood out as one of the most productive cultivars of Coffea arabica L. Therefore, the aim of this work was to select Mundo Novo progenies with high bean yield capacity and with other agronomic characteristics of interest. We evaluated the bean yield, seed size, plant height, upper and lower canopy diameter, stem diameter, and plant vigor of 24 F 4 progenies and one check cultivar. The experimental design consisted of a randomized complete block design with three replicates and experiments were carried out in two sites: São Sebastião do Paraíso (SSP) and Três Pontas (TP), MG, Brazil. The mixed model approach was used to calculate the genotypic value for each progeny, after which the selective accuracy and genetic gain of the two best progenies in each trait were calculated, the simultaneous selection index of Mulamba and Mock was used to select the two most promising progenies at each site. In general, the genetic gain was higher at SSP than at TP. In SSP, the most promising progenies were 1 [IAC376-2 (M. Novo) x IAC386-17 (M. Novo)] and 20 [IAC382-10 (M. Novo) x IAC388-20 (M. Novo)]. In TP, the most promising progeny was 22 [H1535/181 (M. Novo) x (S795) 1344/10/5], together with the check (Mundo Novo IAC379/19). The highest selection gain was expressed for bean size (the percentage of beans retained in sieve 17).