DSpace Coleção: Artigo em periódico indexado (SAPC)Artigo em periódico indexado (SAPC)https://www.alice.cnptia.embrapa.br/alice/handle/item/9022026-08-16T03:19:55Z2026-08-16T03:19:55ZSelection of high-yielding genotypes of coffea canephora at transitional altitude: adaptability and stability and impacts of water management.COLODETTI, T. V.RODRIGUES, W. N.SENRA, J. F. de B.ESPINDULA, M. C.AMARAL, J. F. T. doRAMALHO, J. D. C.TOMAZ, M. A.https://www.alice.cnptia.embrapa.br/alice/handle/doc/11890722026-08-10T14:41:03Z2026-01-01T00:00:00ZTítulo: Selection of high-yielding genotypes of coffea canephora at transitional altitude: adaptability and stability and impacts of water management.
Autoria: COLODETTI, T. V.; RODRIGUES, W. N.; SENRA, J. F. de B.; ESPINDULA, M. C.; AMARAL, J. F. T. do; RAMALHO, J. D. C.; TOMAZ, M. A.
Conteúdo: Expanding Coffea canephora cultivation to transitional altitudes offers a promising strategy to sustain coffee production under climate change. This study evaluated 27 genotypes cultivated under two water management regimes (fully and minimally irrigated) at 650 m altitude in Espírito Santo, Brazil, over eight harvests (2018–2025). A split-plot design was analyzed using a three-way mixed model (REML/BLUP) to estimate genetic parameters and predicted genotypic values. Adaptability and stability were assessed using the harmonic mean of relative performance of genotypic values (HMRPGV) and weighted average of absolute scores (WAASB) and integrated into a multi-trait selection index. Significant genotypic and temporal effects were detected, while the interaction between genotypes and water management regimes was non-significant, indicating consistent performance under different water regimes. Broad-sense heritability was moderate, with high selective accuracy. Genotypes 108 and 203 achieved the highest predicted yields (91.4 and 86.8 bags ha−1) and superior adaptability. The multi-trait index identified six outstanding genotypes—108, 203, 201, 306, 303, and 302—combining high yield, broad adaptability, and temporal stability, resulting in an expected genetic gain of 8.17% in relation to the original population. These findings demonstrate that selected C. canephora genotypes are well adapted to transitional altitudes, supporting breeding programs for climate-resilient and high-yielding crops.2026-01-01T00:00:00ZIntegrating yield stability and gross revenue: multi-year evaluation of coffea canephora genotypes.KOLLN, A. M.ALMEIDA, R. N. deROCHA, R. B.PARTELLI, F. L.TEIXEIRA, A. L.ARAÚJO, L. F. B. deESPINDULA, M. C.https://www.alice.cnptia.embrapa.br/alice/handle/doc/11890752026-08-10T15:41:03Z2026-01-01T00:00:00ZTítulo: Integrating yield stability and gross revenue: multi-year evaluation of coffea canephora genotypes.
Autoria: KOLLN, A. M.; ALMEIDA, R. N. de; ROCHA, R. B.; PARTELLI, F. L.; TEIXEIRA, A. L.; ARAÚJO, L. F. B. de; ESPINDULA, M. C.
Conteúdo: Agricultural research helps us to reduce the risks associated with climate variability, pests and diseases, market fluctuations, and biennial bearing. However, genotype characterization is often conducted independently of economic performance and yield stability, limiting the identification of genotypes that combine high yield, stability, and economic return potential. This study characterized the genotype × harvest season interaction and gross revenue of Coffea canephora clones evaluated in Rondônia, Brazil, over five harvest seasons (2021–2025). Twenty-eight genotypes were evaluated in a randomized complete block design with four replications and five plants per plot, and yield stability was assessed using the centroid method. Cumulative yield over five harvest seasons totaled 306.22 bags ha−1, with a mean of 61.24 bags ha−1 per harvest season. The genotype × harvest season interaction revealed distinct temporal yield patterns. Genotypes closest to the ideotype of maximum yield and stability included BAG19, BRS1216, GJ8, GJ25, AS2, and BAG24. Gross revenue simulations based on contrasting historical coffee price scenarios indicated the economic superiority of these clones. Differences in yield potential contributed more to gross revenue variation than biennial bearing. Relative to the overall mean of the 28 genotypes, these clones achieved an 85% increase in mean yield and a 61.2% increase in mean gross revenue.2026-01-01T00:00:00ZEffect of potassium fertilization of robusta coffee mother plants on clonal seedlings growth.KOLLN, A. M.ESPINDULA, M. C.ARAÚJO, L. F. B. deROCHA, R. B.CAMPANHARO, M.KOLLN, F. T.https://www.alice.cnptia.embrapa.br/alice/handle/doc/11890772026-08-10T15:41:08Z2026-01-01T00:00:00ZTítulo: Effect of potassium fertilization of robusta coffee mother plants on clonal seedlings growth.
Autoria: KOLLN, A. M.; ESPINDULA, M. C.; ARAÚJO, L. F. B. de; ROCHA, R. B.; CAMPANHARO, M.; KOLLN, F. T.
Conteúdo: This study aims to evaluate the effects of different doses of potassium (K) on the growth of the clonal seedlings of Coffea canephora in a clonal garden. The mother plants of C. canephora coffee of the Robusta botanical variety in the clonal garden system from the Plant Breeding Program of Embrapa-RO in Brazil were used in the experiment. The potassium fertilizer was applied to these plants at different rates, including 0 (control), 40, 80, 120, 160, 200, and 240 kg ha-1, divided into 4 applications, during 150 days of the growth of the orthotropic stems (shoots). Cuttings were collected from the mother plants, and their dry matter and nutrient concentrations were determined. In addition, these cuttings were used for the production of seedlings, whose growth was then evaluated at 0, 48, 61, 80, 101, 122, 143, and 164 days after sticking the unrooted cutting into the growth media (DAS), and their vegetative traits were also analyzed at 122 DAS. The accumulation of nutrients in the clonal cutting showed the following order: K > N > Ca > P > Mg > S, irrespective of the dose of K applied to the mother plant, indicating that potassium was the nutrient accumulated in the greatest amount. Applying K doses up to 240 kg K₂O ha⁻¹ during the cuttings growth period enhances vegetative traits and raises the Dickson Quality Index (DQI), thereby producing C. canephora clonal seedlings with superior physiological quality.2026-01-01T00:00:00ZSensory profiling and genetic variability of Coffea canephora genotypes cultivated in the Western AmazonLOPES JUNIOR, H.ROCHA, R. B.BAQUETA, M. R.SILVA, R. N. de P.ALVES, E. A.TEIXEIRA, A. L.ESPINDULA, M. C.MACHADO FILHO, J. A.https://www.alice.cnptia.embrapa.br/alice/handle/doc/11890782026-08-10T15:41:12Z2026-01-01T00:00:00ZTítulo: Sensory profiling and genetic variability of Coffea canephora genotypes cultivated in the Western Amazon
Autoria: LOPES JUNIOR, H.; ROCHA, R. B.; BAQUETA, M. R.; SILVA, R. N. de P.; ALVES, E. A.; TEIXEIRA, A. L.; ESPINDULA, M. C.; MACHADO FILHO, J. A.
Conteúdo: The characterization of variability in the sensory profile of Coffea canephora is essential for the coffee industry, as it supports the selection of plants with favorable quality attributes. This study aimed to evaluate beverage quality and quantify variability among the most widely cultivated clones in Western Amazonia through sensory analysis, based on total cup scores and specific quality descriptors. The samples wer e collected in Porto Velho, Rondônia over three agricultural seasons. Sensory evaluation was performed using the Fine Robusta Tasting Protocol. Fifty genotypes were evaluated, including registered cultivars, genotypes from the Embrapa Active Germplasm Bank, and public domain clones. Performance in different harvests was analyzed using simple and combined analysis of variance (ANOVA), genetic parameter estimates and principal component analysis (PCA). The effect of genotype × year interaction was significant, with a predominance of simple interaction. Total cup scores ranged from 74.77 to 84.21 points, with twenty-five genotypes scoring above 80 points and therefore classified as Fine Robustas. The weighted average of the descriptor frequencies, considering their position on the flavor wheel, ranged from 99.48 to 259.99. PCA indicated that clones with higher beverage quality are associated with the descriptors Nutty/Cocoa, Sweet, Floral, and Fruity. This study shows t hat the selection of coffee genotypes influences the sensory profile of the beverage. Moreover, it supports the production of high-quality coffee that not only achieves elevated overall cup scores but also presents balanced and pleasant sensory descriptors, adding value to the final product.2026-01-01T00:00:00Z