ABSTRACT This research is related to the evaluation of vegetative growth parameters, initial yield and incidence of pests and diseases of twelve Arabica coffee cultivars submitted to the subtropical humidity environment of Vale do Ribeira Paulista, Brazil. The experiment was performed in the Experimental Campus of the UNESP in Registro, in a randomized block design, with three replications. Stem diameter, number of plagiotropic branches, plant height, number of internodes of plagiotropic branches, length of the first plagiotropic branch, incidence of brown eye spot and phoma leaf spot on coffee leaves, infestation by leaf miner and the yield of cultivars were evaluated. The results obtained allowed to conclude that: i) cultivars Catuaí Amarelo IAC 62, Catuaí Vermelho IAC 99 and Mundo Novo IAC 379-1 were higher than the others, with yield above the national average in 2020 and percentage of flat beans below 10%; ii) all cultivars evaluated showed a similar level of increment of variables that indicate plant growth and reproductive development; iii) the cultivation environment is favorable to infestation by the leaf miner and unfavorable to the incidence of rust; iv) The prevailing climatic conditions in the Vale do Ribeira Paulista is suitable for the production of Arabica coffee.

ABSTRACT Brazil is the largest Coffea arabica L. producer and exporter in the world market. In view of the need for nitrogen fertilization, the objective of this work was to evaluate the use of digital images of coffee leaves as a function of nitrogen concentration and cultivars, as well as to evaluate the most adequate sampling of this technique to predict leaf nitrogen. The experiment was set in a greenhouse, at UNESP - Experimental Campus of Registro-SP, using 12L pots with medium sand. A completely randomized design was adopted, in a 4 x 2 factorial scheme, with four concentrations of N (0, 50, 100 and 200 mg dm-3), and two coffee cultivars (Mundo Novo and Obatã), with ten replications. The variables evaluated were: hue, dark green color index (DGCI), leaf area and leaf nitrogen content. The hue and DGCI were influenced by N concentration, cultivar and are dependent on the day after treatment application and the number of leaves used. The use of five leaves per replication was more adequate to estimate leaf N content. Hue, DGCI and leaf area were higher in Obatã depending on the day after application of the treatment and N concentration.

RESUMEN En los últimos años el cultivo de café guatemalteco ha sufrido declinación en su rendimiento como resultado de la roya del café. El uso de cultivares resistentes a esta enfermedad y con potencial para producir cafés con buena calidad de bebida es fundamental para la sustentabilidad del cultivo en el país. El objetivo de este estudio fue analizar el potencial de calidad del grano y el perfil sensorial de genotipos de café Arábica resistentes a la roya, en función de diferentes tiempos de fermentación biológica. El experimento se implementó en julio de 2014, en la finca El Panorama, ubicada en el municipio de San Rafael Pie de La Cuesta, Departamento de San Marcos, Guatemala. Se probaron ocho progenies F5 resistentes a la roya y se utilizaron como controles los cultivares Marsellesa y Bourbon Amarelo. Cada genotipo fue sometido a dos tiempos de fermentación biológica en agua, después del pelado (24 y 72 h). El diseño experimental fue bloques completos al azar con tres repeticiones en un esquema factorial 10 (genotipos) × 2 (tiempos), totalizando 60 unidades experimentales. Se evaluó la calidad, perfil sensorial y granulometría de los tratamientos. Todos los genotipos estudiados resistentes a la roya mostraron potencial para la producción de cafés especiales en Guatemala y una granulometría superior en relación al Bourbon Amarelo. Marsellesa y Bourbon Amarelo obtuvieron puntajes finales más altos y los atributos de sabor, regusto, acidez, cuerpo, equilibrio y en general, fueron más acentuados. El tiempo de fermentación biológica no influyó en la puntuación final del café (pontuación total en el protocolo SCA); sin embargo, hubo un cambio en el perfil sensorial, con énfasis en el cultivar Marsellesa, que aumentó la frecuencia de notas frutales y redujo las notas de caramelo con mayor tiempo de fermentación.

SUMMARY In recent years, the Guatemalan coffee plantations have suffered a decline in its yield as a result of coffee rust. The use of cultivars resistant to this disease and with the potential to produce coffee with good drinking quality is essential for the sustainability of coffee cultivation in the country. The aim of this study was to analyze bean quality potential and the sensory profile of rust-resistant Arabica coffee genotypes as a function of different times of biological fermentation. The experiment was carried out in July 2014, at El Panorama farm, located in the municipality of San Rafael Pie de La Cuesta, Department of San Marcos, Guatemala. Eight rust resistant F5 progenies were tested and cultivars Marsellesa and Bourbon Amarelo were used as controls. Each genotype was subjected to two times of biological fermentation in water, after peeling (24 and 72 h). The experimental design was randomized complete blocks with three replications, in a 10 (genotypes) × 2 (times) factorial scheme, totaling 60 experimental units. The quality, sensory profile and granulometry of the treatments were evaluated. All the rust-resistant genotypes studied showed potential to produce specialty coffees in Guatemala and a superior granulometry in relation to Bourbon Amarelo. Marsellesa and Bourbon Amarelo obtained higher final scores and the attributes flavor, aftertaste, acidity, body, balance and overall were more accentuated. The time of biological fermentation did not influence the final score of the coffee (total score in the SCA protocol); however, there was a change in the sensory profile, with emphasis on cultivar Marsellesa, which increased the frequency of fruity notes and reduced caramel notes with longer fermentation time.

Resumo O objetivo deste trabalho foi selecionar genótipos de Coffea arabica com boa produtividade e potencial de tolerância ao deficit hídrico, além de tentar compreender os mecanismos fisiológicos e anatômicos envolvidos na adaptabilidade desses genótipos ao estresse hídrico. Avaliaramse características fisiológicas, anatômicas e agronômicas de 19 genótipos de C. arabica sob as duas seguintes condições hídricas: irrigação regular e sem irrigação (deficit hídrico no solo). Os genótipos 'IPR 100', 2, 5 e 7 apresentaram características agronômicas, fisiológicas e anatômicas que contribuíram para melhor manutenção do estado hídrico no desenvolvimento inicial do cafeeiro. Com base nesses resultados, esses genótipos são potencialmente tolerantes ao deficit hídrico. Os genótipos 4, 10, 11, 14, 15 e 'Bourbon Amarelo IAC J10' apresentam menor adaptabilidade das estruturas anatômicas em condições de deficit hídrico no solo. Os genótipos de cafeeiro apresentam plasticidade foliar, como a espessura do parênquima paliçádico e esponjoso, e o número, posição, dimensões e mobilidade dos estômatos em condições de deficiência hídrica.

Abstract The objective of this work was to select genotypes of Coffea arabica with good yield and potential tolerance to water deficit, as well as to try to understand the physiological and anatomical mechanisms involved in the adaptability of these genotypes to water stress. The physiological, anatomical, and agronomic traits of 19 genotypes of C. arabica were evaluated under the two following water conditions: regular irrigation and no irrigation (soil water deficit). The 'IPR 100', 2, 5, and 7 genotypes showed agronomic, physiological, and anatomical traits that contributed to a better water status maintenance in the initial development of coffee plants. Based on these results, these genotypes are potentially tolerant to water deficit. The 4, 10, 11, 14, 15, and 'Bourbon Amarelo IAC J10' genotypes show a lower adaptability of the anatomical structures under soil-water deficit conditions. The coffee tree genotypes display leaf plasticity, such as the thickness of palisade and spongy parenchyma, and the number, position, dimensions, and mobility of stomata under water deficit conditions.

Abstract MGS Guaiçara e MGS Vereda are resistant to Meloidogyne paranaensis, one of the most aggressive nematode parasites of coffee. MGS Vereda is an early maturation cultivar, whereas MGS Guaiçara has a medium maturation cycle. Both cultivars produce red fruit, have high size, and high yield potential in infested areas.

RESUMO A produção de mudas de clone de Coffea arabica L. é uma das alternativas de maior demanda para cafeicultores, existindo programas de melhoramento através da técnica de embriogênese somática, no entanto, os clones apresentam dificuldades de pegamento na fase de aclimatação em casa de vegetação elevando custo de produção. Uma alternativa testada com resultados promissores é a inoculação com fungos micorrízicos arbusculares (FMA) durante o processo de aclimatação das mudas. Assim, o objetivo deste trabalho foi promover a melhoria do processo de produção de mudas através de embriogênese somática associada a inoculação com fungos micorrízicos arbusculares. Para a produção dos clones, plântulas foram utilizadas quando apresentaram quatro pares de folhas (clone 1 “Frutificação vermelha Catucaí” e clone 2 “Acauã”) produzidos e desenvolvidos em biorreatores “embriogênese somática” e quando levadas para o viveiro inoculadas com Rhizophagus clarus, Gigaspora margarita e Acaulospora mellea, a mistura de R. clarus e G. margarita e a mistura de R. clarus, G. margarita e A. mellea. Após seis meses foram avaliados os parâmetros agronômicos, teores de nutrientes foliar e a colonização micorrizica nas raízes. Os clones se comportaram diferentemente quando inoculados com o FMAs, sendo que o clone 1, o que apresentou melhor desenvolvimento no viveiro determinadas pelos parâmetros agronômicos, sendo indicada na produção de mudas clonais vigorosas qu, ando associado a inoculação com fungos micorrízicos arbusculares.

ABSTRACT The production of Coffea arabica L. clone seedlings through the somatic embryogenesis technique is one of the alternatives of greatest demand for coffee producers. However, clones can face difficulties related to acclimatization carried out under greenhouse conditions, which can increase the production costs. A tested alternative with promising results is inoculation with arbuscular mycorrhizal fungi (AMF) during the seedling acclimatization process. Thus, this study aimed to promote the improvement of the seedling production process through somatic embryogenesis associated with inoculation with AMF. For the production of the clones, seedlings were used in the phase when they presented four pairs of leaves (Clone 1 “Fruiting red Catucaí” and Clone 2 “Acauã”), using “somatic embryogenesis” bioreactors, followed by inoculation with Rhizophagus clarus, Gigaspora margarita and Acaulospora mellea, a mixture of R. clarus and G. margarita and a mixture of R. clarus, G. margarita and A. mellea. After six months, agronomic parameters, leaf nutrient contents and root mycorrhizal colonization were evaluated. The studied clones behaved differently when inoculated with AMFs. Clone 1 showed the best development in the greenhouse, which was determined by the agronomic parameters. Thus, Clone 1 is indicated for the production of vigorous seedlings when associated with inoculation with AMFs.

Abstract Brazilian coffee cultivation was boosted over the last few decades by the mechanization of various field operations. Considering the influence of genetic factors on coffee harvesting efficiency, we aimed to evaluate the use of mechanized harvesting characteristics as a criterion to select progenies derived from ‘Icatu’ germplasm, previously evaluated for agronomic characteristics, resistance to rust and cercosporiosis. We also investigated genotypic and phenotypic correlations between semi-mechanized harvesting characteristics. Ten progenies of Coffea arabica L. were analyzed in two experimental farms during two consecutive harvests. Genetic parameters were evaluated to trace selection strategies. Four progenies that were suitable for mechanization were selected, supporting our hypothesis of the use of harvest characteristics as selection criteria.

Abstract In 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.

Abstract This paper presents the results of progeny 1190-1170-2, which was recorded as ‘MGS Travessia’ and selected based on its performance in the state of Minas Gerais. The cultivar has short size, cylindrical canopy, high yield capacity, high vegetative vigor, very satisfactory husk/bean ratio, grain quality compatible to traditional cultivars, and is very responsive to skeleton pruning.

Os programas de melhoramento devem ser dinâmicos e contínuos, de modo a disponibilizarem sempre novos cultivares de cafeeiros, com fatores de resistência complexos, que se constituam em eficientes barreiras para as novas raças fisiológicas do fungo H. vastatrix. Por essa razão, objetivou-se, com este trabalho, avaliar o comportamento agronômico, a resistência à ferrugem e a ocorrência de cercosporiose em progênies, provenientes do cruzamento dos grupos de cultivares Catuaí e Icatu, em dois ambientes de Minas Gerais. Os experimentos foram implantados nas Fazendas Experimentais da EPAMIG, em São Sebastião do Paraíso e Três Pontas - MG. O delineamento experimental adotado foi o látice quadrado 6 x 6, com 3 repetições. Nos dois ambientes, foram realizadas avaliações de produtividade, vigor vegetativo, percentagem de grãos com peneira 17 acima e reação à ferrugem e à cercosporiose, nos anos agrícolas 2009/2010 e 2010/2011. O desempenho das progênies avaliadas, para produtividade, em Três Pontas, foi superior quando comparado ao de São Sebastião do Paraíso. A progênie H 6-47-10 Cova 3 destacou-se entre as mais promissoras, sugerindo boas possibilidades de progresso genético na seleção.

Breeding programs should be dynamic and continuous in order to provide new coffee cultivars with complex resistance factors to be efficient barriers to new physiological races of the fungus H. vastatrix. In this context, the objective of this work was to evaluate the agronomic performance, the resistance to rust and the occurrence of brown eyespot in progenies derived from crosses between Catuaí and Icatu groups in two sites in the State of Minas Gerais. The experiments were carried out on EPAMIG Experimental Farms situated in São Sebastião do Paraíso and Três Pontas, State of Minas Gerais, Brazil. The experimental design was a 6 x 6 lattice square with three replications. The following characteristics were evaluated in the 2009/2010 and 2010/2011crop years in both sites: yield, vegetative vigor, percentage of grain size and response to rust and brown eyespot. Performance of the evaluated progenies for productivity in Três Pontas was higher than in São Sebastião do Paraíso. The progeny 6-47-10 H Hole 3 stood out among the most promising, suggesting good potential for genetic progress in selection. Progenies with resistance to rust were classified.

Objetivou-se com este trabalho avaliar o comportamento agronômico de progênies de cafeeiro. O experimento foi instalado na Fazenda Ouro Verde, situada no Município de Campos Altos-MG, compreendendo vinte e três progênies e sete cultivares utilizadas como testemunhas. Essas progênies referem-se à quarta geração do cruzamento entre Híbrido de Timor e Catuaí. Foi utilizado o delineamento de blocos ao acaso, com quatro repetições, totalizando 120 parcelas, sendo cada parcela constituída por oito plantas. A produtividade em sacas de café beneficiado ha-1 foi avaliada em oito colheitas, de 2003 a 2011. Nas colheitas de 2010 e 2011 foram avaliadas a porcentagem de frutos no estádio cereja e de frutos chochos, a classificação do café (peneira 17 acima), renda e vigor vegetativo. Conclui-se que as progênies apresentaram grande variabilidade para as características agronômicas estudadas. As progênies 514-7-4-C130, 493-1-2-C134 e 518-2-10-C408 apresentaram os maiores valores de produtividade na média dos quatro biênios avaliados. As progênies 436-1-4-C26, 516-8-2-C109, 493-1-2-C134, 518-2-10-C408, 514-7-16-C211 e 514-7-16-C208 apresentaram as maiores notas de vigor vegetativo. A progênie 493-1-2-C134 se destacou em todas as características analisadas, mostrando-se promissora para o avanço de gerações.

The objective of this work was to evaluate the agronomic traits of coffee tree progenies. The experiment was set in Ouro Verde Farm, located at Campos Altos County, MG. Twenty three coffee progenies and seven control cultivars were used. These progenies are from the fourth generation of crossing between Timor Hybrid and Catuaí. The experiment was set in a randomized block design with four replicates, a total of 120 plots with 8 plants per plot. The yield of processed coffee sacks ha-1 was evaluated in eight crop years from the 2003 to the 2011 harvests. The percentage of fruits at the cherry stage, floating fruits, coffee classification (sieve above 17), income and plant vigor were evaluated in the 2010 and in the 2011 harvests. It was concluded that the progenies showed a great variability for the agronomic traits. Progenies 514-7-4-C130, 493-1-2-C134 and 518-2-10-C408 had the highest yield in the four two-year periods. The progenies 436-1-4-C26, 516-8-2-C109, 493-1-2-C134, 518-2-10-C408, 514-7-16-C211 and 514-7-16-C208 presented the highest values for plant vigor. Progeny 493-1-2-C134 stood out in all analyzed traits, showing to be promising for the advance of the generations.

Este trabalho objetivou identificar a divergência genética entre acessos de cafeeiro do grupo Maragogipe, situados no Banco Ativo de Germoplasma de Café do Estado de Minas Gerais, no município de Patrocínio (MG), por meio de análises multivariadas. Foram avaliados 27 descritores morfo-agronômicos, e a distância generalizada de Mahalanobis foi usada para quantificar a divergência genética entre os acessos. Como estratégias de agrupamento, foram empregados o agrupamento de Tocher, o método hierárquico Unweighted Pair-Group Method Using Arithmetic Averages (UPGMA) e a análise de variáveis canônicas. A análise de agrupamento pelos métodos de Tocher e UPGMA separaram os acessos em três e seis grupos, respectivamente. A análise da contribuição relativa de cada característica para a dissimilaridade genética destacou as características intensidade da ondulação da folha, quantidade de inflorescência por axila foliar e produtividade média como as que mais contribuíram para a obtenção da divergência genética. Observou-se que as três primeiras variáveis canônicas explicaram mais de 90% da variância total contida no conjunto das características analisadas. A combinação entre os acessos MG0167 e MG0170 é a mais promissora em um possível cruzamento para uso imediato em programas de melhoramento.

This study aimed to identify the genetic divergence among coffee trees of the Maragogipe group in the active germplasm coffee bank in Patrocínio, Minas Gerais, Brazil, using multivariate analyzes. In the study, 27 morpho-agronomical descriptors were assessed. Mahalanobis generalized distance was applied to quantify the genetic divergence among genotypes. The following methods were used: Tocher clustering, Unweighted Pair-Group Method Using Arithmetic Averages (UPGMA) hierarchical clustering and the canonical variables analysis. The cluster analysis by Tocher method and the UPGMA separated the accessions into three and six groups, respectively. The analysis of the relative contribution of each characteristic to the genetic dissimilarity highlighted the intensity of curling leaf, inflorescence number per leaf axil and average yield as those that contributed most to the achievement of genetic divergence. It was observed that the first three canonical variables explained more than 90% of the total variance contained in the set of the analyzed characteristics. The combination between MG0167 and MG0170 accessions is the most promising for a possible crossing for immediate use in breeding programs.

As respostas à disponibilidade dos nutrientes variam entre espécies distintas dentro de um mesmo gênero, por causa, principalmente, das exigências nutricionais variáveis, capacidade de absorção, translocação e utilização dos nutrientes. O objetivo deste trabalho foi avaliar a eficiência de absorção, translocação e uso dos micronutrientes por diferentes cultivares de Coffea arabica L., enxertados em Apoatã IAC 2258 (Coffea canephora). O experimento foi instalado em casa de vegetação, utilizando-se o método de cultivo em solução nutritiva. Foi utilizado um fatorial 7 x 3 + 2, sendo sete cultivares de Coffea arabica L. (Palma II, Catucaí 2 SL, Oeiras MG 6851, Obatã IAC 1669-20, Acauã, Topázio MG 1190 e Paraíso MG H 419-1), três tipos de mudas (pé franco, autoenxertada e enxertada sobre o cultivar Apoatã IAC 2258) e duas testemunhas (Apoatã autoenxertado e Apoatã pé franco). O porta-enxerto utilizado influenciou negativamente na absorção de boro, ferro e manganês. A translocação dos micronutrientes boro e cobre obteve maiores índices nas mudas enxertadas. O cultivar Palma II, quando enxertado, apresentou o maior índice de utilização dos nutrientes, mostrando-se passível de ser enxertado. O porta-enxerto utilizado mostrou-se apto para a enxertia, por não sofrer influência negativa, tanto pela enxertia, quanto pelos cultivares utilizados.

Responses to availability of nutrients vary between different species within the same genus, mainly because the different nutritional requirements, absorption capacity, translocation and use of nutrients, The purpose of this study was to evaluate the efficiency of absorption, translocation and use of micronutrients by different cultivars of Coffea arabica L. grafted into Apoatã IAC 2258 (Coffea canephora). The experiment was conducted in a greenhouse using cultivation in nutrient solution in a 7 x 3 + 2 factorial design: seven cultivars of Coffea arabica L. (Palma II, Catucaí 2 SL, Oeiras MG 6851, Obatã IAC 1669-20, Acauã, Topázio MG 1190 and Paraíso MG H 419-1), three types of seedlings (ungrafted, self-grafted and grafted on cultivar Apoatã IAC 2258) and two controls (Apoatã self-grafted and Apoatã foot-free). The results showed that the rootstocknegatively influenced the absorption of boron, iron and manganese. The translocation of the micronutrients boron and copper had the highest rates in the grafted seedlings. The cultivar Palma II, when grafted, showed the highest rates of use of nutrients, showing that it can be grafted. The rootstock proved to be suitable for grafting, for not being negatively influenced by both the grafting and the cultivars used.

O objetivo deste trabalho foi avaliar a adaptabilidade e estabilidade fenotípica e outras características de interesse agronômico de genótipos de café Bourbon Vermelho e Bourbon Amarelo, para selecionar os de melhor desempenho no Estado de Minas Gerais. Foram avaliados 17 genótipos pertencentes ao grupo Bourbon, bem pontuados em concursos de qualidade de bebida, além de três cultivares amplamente cultivadas no estado, utilizadas como testemunhas. Os experimentos foram instalados em dezembro de 2005, nos municípios de Lavras, Santo Antônio do Amparo, Três Pontas, Campos Altos e Patrocínio. As avaliações foram realizadas durante as quatro primeiras colheitas, nos anos agrícolas 2007/2008, 2008/2009, 2009/2010 e 2010/2011, e compreenderam as seguintes características: produtividade de grãos, adaptabilidade e estabilidade fenotípica, percentagem de frutos chochos, vigor vegetativo e classificação por peneira. Há variabilidade genética dentro do grupo de Bourbon estudado. Os genótipos de Bourbon apresentam produtividades satisfatórias em todos os locais avaliados. O genótipo Bourbon Vermelho 2 apresenta maior adaptabilidade, tendo-se destacado quanto a todas as características avaliadas.

The objective of this work was to evaluate phenotypic adaptability and stability, and other traits of agronomic interest of genotypes of Red Bourbon and Yellow Bourbon coffee in order to select the ones with better performance in the state of Minas Gerais, Brazil. We evaluated 17 genotypes of the Bourbon cultivar group, with good performance in cup-quality tests, as well as three cultivars widely grown in the state, used as a control. The experiments were established in December 2005, in the municipalities of Lavras, Santo Antônio do Amparo, Três Pontas, Campos Altos, and Patrocínio. The evaluations were done during the first four harvests in the growing seasons of 2007/2008, 2008/2009, 2009/2010, and 2010/2011, including the following traits: grain yield, phenotypic adaptability and stability, percentage of floating grains, vegetative vigor, and bean size. There is genetic variability within the Bourbon group studied. Bourbon genotypes show satisfactory yields in all evaluated sites. The genotype Red Bourbon 2 has greater adaptability, and stood out as to all studied variables.

Este trabalho teve por objetivo avaliar a adaptabilidade e estabilidade fenotípica da produtividade de genótipos do grupo Mundo Novo pelos métodos TOLER e AMMI de maneira a compará-los e a selecionar aqueles que apresentassem alta adaptabilidade produtiva nas regiões produtoras de café do estado de Minas Gerais. Foram instalados e conduzidos experimentos em Três Pontas, Campos Altos e Capelinha, em delineamento de blocos casualizados, com quatro repetições e seis plantas por parcela. Os tratamentos foram constituídos por 33 genótipos do grupo Mundo Novo obtidos no Programa de Melhoramento Genético do Cafeeiro conduzido pelo Instituto Agronômico de Campinas (IAC). As avaliações de produção foram efetuadas ao longo de seis colheitas, as quais foram agrupadas em biênios. Cada combinação biênio x local foi considerada um ambiente, totalizando nove ambientes de estudo. Uma vez detectada a presença de interação genótipo x ambiente pelo teste de F de Snedecor, procedeu-se à análise de estabilidade, sendo a adaptação representada pela produtividade. Os métodos AMMI e TOLER foram semelhantes ao classificar os genótipos e ambientes e devem ser usados em conjunto em programas de melhoramento do cafeeiro para maior confiabilidade das informações, uma vez que suas interpretações são complementares. A estabilidade foi associada, nesse estudo, com baixa adaptabilidade. Os genótipos IAC 379-19, IAC 388-6-16 e IAC 403-1 apresentaram-se instáveis com alta adaptabilidade. Os genótipos IAC 2931 e IAC 480 se enquadram como desejáveis, pois associam estabilidade média e produtividade considerável.

The purpose of this study was to evaluate the phenotypic adaptability and stability for yield in coffee genotypes of the cultivar "Mundo Novo" by using the methods TOLER and AMMI, as well as to select genotypes with high productive adaptability in the coffee growing regions of Minas Gerais. The experiments were carried out in Três Pontas, Campos Altos and Capelinha, Minas Gerais, Brazil, in a randomized complete block design with four repetitions and six plants per plot. The treatments consisted of 33 genotypes of cultivar "Mundo Novo" provided by the coffee plant breeding program of the Instituto Agronômico (IAC). The yield analyses were performed during six harvests, which were grouped in bienniums. Each combination biennium x site was considered an environment totalizing nine environments. Once the genotype x environment interaction was detected by the F test of Snedecor, the stability analysis was done with the adaptation being represented by yield. The methods AMMI and TOLER were similar when classifying the genotypes and environments, and should be used together in coffee breeding programs in order to obtain greater reliability of information, as they are complementary. In this study the stability was associated with low adaptability. The IAC 379-19, IAC 388-6-16 and IAC 403-1 genotypes were unstable with high adaptability. The IAC 2931 and IAC 480 genotypes were classified as desirable due to average stability associated with reasonable yield.