Biblioteca do Café
URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/1
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Item Initial performance and genetic diversity of coffee trees cultivated under contrasting altitude conditions(Escola Superior de Agricultura "Luiz de Queiroz", 2023-08-14) Senra, João Felipe de Brites; Silva, Josimar Aleixo da; Ferreira, Adésio; Esposti, Marlon Dutra Degli; Ferrão, Maria Amélia Gava; Fassarella, Kamila Machado; Silva, Uliana Ribeiro; Milheiros, Idalina Sturião; Silva, Fernanda Gomes daThis work evaluated the initial performance and genetic diversity of Coffea canephora genotypes cultivated in environments at contrasting altitudes. Fourteen morphophysiological traits and seven descriptors of the genus Coffea spp. of coffee trees cultivated at altitudes of 140 m and 700 m were evaluated. The design used was Federer’s augmented block in a 2 × 112 factorial scheme with six blocks. The first factor was the two environments, and the second was the 112 genotypes, with eight common treatments, being five conilon coffee clones and three arabica coffee cultivars. The data were analyzed by the method of REML/BLUP and genetic correlation method. Genetic diversity was evaluated by estimating the distance matrix, applying the Gower methodology followed by the clustering method by Tocher and UPGMA. The phenotypic means were higher in the environment at an altitude of 700 m, except for plant height, number of leaves, and canopy height (CH). Genotypic effects were significant for most traits except for leaf width, CH, unit leaf area, and total leaf area. A wide genetic diversity was verified, with distances varying from 0.037 to 0.593 for the pairs of genotypes 26 × 93 and T7 × 76, respectively. Most of the traits studied showed high genotypic correlation with the environment and expressive genetic correlation between the evaluated traits thereby demonstrating the possibility of indirect selection. There is an adaptation of conilon coffee genotypes to high altitudes and the possibility of developing a specific cultivar for the southern state of Espírito Santo.Item Repeatability and number of harvests required for selection in robusta coffee(Crop Breeding and Applied Biotechnology, 2004) Fonseca, Aymbiré Francisco Almeida da; Sediyama, Tocio; Cruz, Cosme Damião; Sakiyama, Ney Sussumu; Ferrão, Romário Gava; Ferrão, Maria Amélia Gava; Bragança, Scheilla MarinaThis study aimed to estimate the repeatability coefficient of the grain yield in Coffea canephora by three methods: to quantify the precision of the measurements; to predict the real value of an individual based on n evaluations; and to determine the number of phenotypic measures required in each plant to obtain an adequate precision level for an efficient discrimination of the genotypes. The coefficients of repeatability and determination were estimated based on four harvests of 80 genotypes. Highest estimates of the repeatability coefficient were obtained by the method of the principal components derived from the matrix of covariances, which expresses the correlation between each measurement pair. The prediction precision of the real individual value ranged from 65.32 to 81.59%, and remained practically unchanged from the sixth harvest on.Item Inter-trait relations for direct and indirect selection in coffee(Crop Breeding and Applied Biotechnology, 2008-06-09) Ferrão, Romário Gava; Ferreira, Adésio; Cruz, Cosme Damião; Cecon, Paulo Roberto; Ferrão, Maria Amélia Gava; Fonseca, Aymbiré Francisco Almeida da; Carneiro, Pedro Crescêncio de Souza; Silva, Marcia Flores daThe purpose of this study was to verify the possibility of using direct selection in nine traits underlying indirect selection for yield and determine which traits should participate in the selection process. Data of 40 Conilon coffee genotypes were analyzed in two experiments in the growing seasons of 1996, 1998, 1999, 2000 and 2001 in random blocks with four and six replications. The significance of phenotypic associations was evaluated by the t test and the genotypic and environmental associations by bootstrap resampling. The genotypic associations were higher than the phenotypic, indicating a prevailing influence of the genotypic over the environmental effects in the relationship between significant traits; equal signs indicated a lack of contrary action among the effects. The traits related to cycle; yield; ratio of fresh ripe cherries to clean coffee; empty or flat grains; and sieve 17 should be maintained in the selection, evaluation and study of genetic divergence. The estimated gains in grain yield by indirect selection for any trait studied are not satisfactory.Item Discriminant analysis for the classification and clustering of robusta coffee genotypes(Crop Breeding and Applied Biotechnology, 2004-07-07) Fonseca, Aymbiré Francisco Almeida da; Sediyama, Tocio; Cruz, Cosme Damião; Sakiyama, Ney Sussumu; Ferrão, Romário Gava; Ferrão, Maria Amélia Gava; Bragança, Scheilla MarinaThis study evaluated the adequacy of the composition of three clonal Coffea canephora varieties recommended for the State of Espírito Santo by a multivariate method designated discriminant analysis. This method consists in the establishment of functions that enable the classification of a given individual into one, among various distinct populations, reducing the probability of a misclassification. It simultaneously considers measures of several traits, in order to give the new variety homogeneity. The original classification of genotypes in the three studied varieties, based on agronomical criteria, maintained expressive concordance with the results of the discriminant analysis, with an apparent deviation rate of only 6.25%. Corrected discriminant functions were also proposed, capable of classifying a new genotype into one of the three clonal varieties to be used in improvement programs, eliminating the subjectivity of the clustering process.Item Genetic divergence in Conilon coffee revealed by RAPD markers(Crop Breeding and Applied Biotechnology, 2009) Ferrão, Maria Amélia Gava; Fonseca, Aymbiré Francisco Almeida da; Ferrão, Romário Gava; Barbosa, Wellington Marota; Souza, Elaine Manelli RivaThis study aimed to evaluate the genetic variability of 49 Coffea canephora clones of the breeding program of the Capixaba Institute of Research, Technical Assistance and Rural Extension (Incaper) based on RAPD markers. Thirty-one primers were used with polymorphism patterns that generated 333 markers, of which 231 (69.4%) were polymorphic. The group of genotypes based on the UPGMA algorithm and Tocher optimization methods detected high divergence in the genotypes. It was found that the component clones of each clone variety recommended by Incaper are distributed in various genetically dissimilar groups, in spite of common phenotypic traits. The relatively wide genetic diversity observed here demonstrates the importance of hybridizations between these germplasms. The RAPD markers efficiently estimated the genetic divergence in the 49 C. canephora genotypes studied.Item Genetic variability of conilon coffee population from cultivar ‘ES8152’ based on morphoagronomic variables(Universidade Federal de Lavras, 2022-06-09) Senra, João Felipe de Brites; Silva, Josimar Aleixo da; Ferrão, Maria Amélia Gava; Esposti, Marlon Dutra Degli; Milheiros, Idalina Sturião; Fassarella, Kamila MachadoThis study aimed to analyze the genetic variability of Coffea canephora population with 190 genotypes from cultivar ‘ES8152’, based on morphoagronomic characteristics and vegetation index, to identify the most important characteristics for genetic divergence and compare them with commercial clones. The experiment was installed, in 2019, at the Bananal do Norte Experimental Farm/INCAPER, Cachoeiro de Itapemirim, ES, Brazil. The experiment was carried out in Federer’s augmented block design with three blocks, four common treatments (commercial clones A1, LB1, V8 and V12) and 190 regular treatments, genotypes from the seed production field of the conilon coffee cultivar ‘ES8152’. At 24 months of age 14 morphoagronomic characteristics and vegetation index were evaluated. Descriptive analysis of the data, the estimation of the Standardized Euclidean Distance (ED) followed by the group-ing by the methods of Tocher, UPGMA and principal coordinates, in addition to the relative importance of the characters estimated by the Singh meth-odology were performed. The most distant genotypes were 62 and 83 (ED=2.620) and the closest were 42 and 160 (ED=0.208). Genotype 83 stood out as the most distant among the others. The optimization and hierarchical groupings allowed the identification of genotypes 15, 81, 107 and 184 as similar to commercial clones. The discard analysis of variables recommended the elimination of the vegetation index and average internode length of the next diversity analysis. Principal coordinate analysis found phenotypic similarity of the genotypes 30, 81, 115, 141 and 163 with the clone V12, of the genotype 119 with the clone A1 and genotype 17 with clone LB1. The study, of morphoagronomic characters, allowed to detection the genetic diversity existing in the materials evaluated, indicating those with phenotypic similarity with the commercial clones, being possible the early identification of promising genotypes, agronomically superior, to start a breeding program for clonal selection, recurrent selection and controlled crosses to maximize heterosis.Item Conilon coffee outturn index: a precise alternative for estimating grain yield(Editora da Universidade Estadual de Maringá - EDUEM, 2022-03-09) Fialho, Gustavo Sessa; Fonseca, Aymbiré Francisco Almeida da; Ferrão, Maria Amélia Gava; Ferrão, Romário Gava; Olivoto, Tiago; Nardino, Maicon; Reis, Edvaldo Fialho dos; Sakiyama, Ney SussumuCoffee outturn can be defined as the ratio between the harvested coffee and its respective processed grains. This character is greatly influenced by genotypic and environmental effects, and in breeding programs your analysis is costly and time-consuming. In this sense, the use of an outturn index to estimate coffee yield on experimental plots is a desirable measure aiming at reducing resources and time in postharvest evaluations. Thus, the present study aimed to evaluate the accuracy of the use of an outturn index equal to 4.0, in the estimation of Conilon coffee grains production. This index indicates that four kilograms of harvested fruit would be needed to obtain one kilogram of processed grains. Based on the average of 157 genotypes conducted in three trials and four harvests, we evaluated the relationship between harvested fruits and processed grains (FcBe), the observed (OGY), and the estimated grain yield per plant (EGY) based on FcBe equal to 4.0 (an outturn index). Descriptive statistics, adequation test for EGY, and the coincidence of occurrence of genotypes observations relating to the top 20% of all observations of OGY and EGY. In the estimation of grain yield in Conilon, the use of FcBe equal to 4.0 showed high precision in the average of the analyzed trials. However, further studies should be conducted to elucidate the effects of climate variables on the yield of Conilon coffee, especially in atypical crop years. Thus, the use of an outturn index becomes interesting in cases where the number of genotypes to be evaluated is very large and a screening of the promising ones is desirable.Item Genótipos de café conilon e sua reação à ferrugem alaranjada(Grupo Paulista de Fitopatologia, 2019) Mendonça, Rodolfo Ferreira de; Jesus Junior, Waldir Cintra de; Ferrão, Maria Amélia Gava; Moraes, Willian Bucker; Busato, Laedio Magno; Ferrão, Romário Gava; Tomaz, Marcelo Antonio; Fonseca, Aymbiré Francisco Almeida daO objetivo deste trabalho foi avaliar o comportamento de 54 clones de cafeeiro conilon oriundos do Programa de Melhoramento Genético do Incaper à ferrugem em condições controladas de temperatura e fotoperíodo. Utilizou-se o delineamento inteiramente casualizado com três repetições, sendo cada repetição composta por 16 discos de folha cada, acondicionados em gerbox e inoculados com 104 esporos.mL-1 de H. vastatrix. Os gerbox foram colocados sob ausência de luz e 22ºC por 48 horas e então em fotoperíodo de 12 horas até o término do experimento. Foram avaliados os componentes de resistência: período de incubação, período latente, incidência, porcentagem de discos com esporulação, número de esporos e severidade. Com base nos resultados verificou-se a formação de três grupos de genótipos de café conilon: Resistentes, Moderadamente Resistentes e Suscetíveis. No grupo Resistente foram alocados 19 genótipos, no grupo Moderadamente Resistente foram alocados 19 genótipos e no grupo Suscetível foram alocados 16 genótipos. Assim, com base nos resultados, conclui-se que há variação no nível de resistência dos genótipos de C. canephora à H. vastatrix. Tal informação subsidia os programas de melhoramento na seleção adequada de progênies de C. canephora quanto à resistência à ferrugem.Item Selection of conilon coffee clones tolerant to pests and diseases in Minas Gerais(Crop Breeding and Applied Biotechnology, 2019) Silva, Vânia Aparecida; Abrahão, Juliana Costa de Rezende; Lima, Luiz Antônio; Carvalho, Gladyston Rodrigues; Ferrão, Maria Amélia Gava; Salgado, Sônia Maria Lima; Volpato, Margarete Lordelo; Botelho, César EliasIn the northern Minas region, the dry-warm climate predisposes coffee plants to the occurrence of leaf miners, mites, cercosporiosis, and leaf scald. Aiming for the development of a cultivar adapted to these conditions, Coffea canephora Pierre ex A. Froehner clones were selected through genetic parameters under an irrigated system, without agrochemicals. Eighteen agronomic traits were evaluated. The survival rate, number of nodes per plagiotropic branch, leaf miner infestation and cercosporiosis incidence were chosen as characteristics for selection of ‘Vitória Incaper 8142’, once they have shown superiority of the genetic parameters. The survival rate variable was used to rank the EMCAPA 8141 Robustão Capixaba clones. Clones V2, V4, V6, V13, RC7, and RC9 were selected as more tolerant to pests and diseases and can provide genetic improvements in conilon breeding program for region. The genetic dissimilarity identified between clones allowed suitable clone combinations to be proposed for use in future crosses.Item Desenvolvimento foliar de mudas de café conilon produzidas em diferentes tipos de tubetes(Embrapa Café, 2019-10) Verdin Filho, Abraão Carlos; Rodrigues, Wagner Nunes; Colodetti, Tafarel Victor; Volpi, Paulo Sérgio; Comério, Marcone; Fonseca, Aymbiré Francisco Almeida da; Ferrão, Romário Gava; Ferrão, Maria Amélia Gava; Posse, Sheila Cristina Prucoli; Vieira, Luciano Junior Dias; Martins, Lima Deleon; Brinate, Sebastião Vinícius Batista; Tomaz, Marcelo AntonioO presente trabalho foi realizado objetivando estudar o desenvolvimento foliar de mudas de café Conilon produzidas em diferentes recipientes, utilizando tubetes de diferentes formados e sacos de polietileno. O experimento seguiu delineamento inteiramente casualizado, estudando quatro recipientes para produção de mudas clonais de café Conilon, sendo três tipos de tubetes cilíndricos de polipropileno, com três tipos de formato: fundo cônico, fundo plano e fundo côncavo, com diferentes configurações de perfurações; e sacos de polietileno. Os resultados mostraram que o uso de tubetes de polipropileno, dependendo de seu formato e volume, pode acelerar o desenvolvimento foliar e o acúmulo de clorofilas nas folhas de mudas de café Conilon em relação à produção de mudas em sacos de polietileno. A alteração do formato do tubete apresentou pouca influência sobre o desenvolvimento inicial das folhas das mudas, sendo observada ligeira alteração dos teores de clorofila b dos tecidos. Logo, o monitoramento do crescimento de plantas oriundas desses tipos de mudas em campo é um importante alvo para futuras pesquisas.