| Autor: |
Schmidt R; Center of Agricultural Sciences, Federal University of Espírito Santo, Alegre 29500-000, Espírito Santo, Brazil., da Silva CA; Department of Agriculture, Federal University of Lavras, Lavras 37200-000, Minas Gerais, Brazil., Silva LOE; Center of Agricultural Sciences, Federal University of Espírito Santo, Alegre 29500-000, Espírito Santo, Brazil., Espindula MC; Rondônia Agroforestry Research Center, Brazilian Agricultural Research Corporation, Porto Velho 76815-800, Rondônia, Brazil., Rodrigues WP; Center of Agricultural, Natural and Literary Sciences, State University of the Tocantina Region of Maranhão, Estreito 65975-000, Maranhão, Brazil., Vieira HD; Agricultural Sciences and Technologies Center, State University of the North Fluminense Darcy Ribeiro, Campos dos Goytacazes 28013-602, Rio de Janeiro, Brazil., Tomaz MA; Center of Agricultural Sciences, Federal University of Espírito Santo, Alegre 29500-000, Espírito Santo, Brazil., Partelli FL; Department of Agricultural and Biological Sciences, University Center of Northern Espírito Santo, Federal University of Espírito Santo, São Mateus 29932-900, Espírito Santo, Brazil. |
| Abstrakt: |
Coffee genotypes cultivated in the Amazonian region have been gaining increasing prominence in Brazilian plantations. This study aimed to quantify nutrient accumulation in the fruits, grains, and husks of Robusta coffee genotypes cultivated in the Brazilian Amazon and estimate genetic diversity. The experiment was conducted in Alta Floresta D'Oeste-Rondônia, Brazil. To assess nutrient accumulation, fresh fruits were collected. These were dried, processed, separated into grains and husks, and subjected to chemical analysis. Nutrient accumulation in fruits, grains, and husks, as well as the grain/husk ratio, underwent analysis of variance through the F-test ( p < 0.01. For each evaluated trait, the experimental coefficient of 337 variation (CVe), genetic coefficient of variation (CVg), and genotypic determination coefficient (H 2 ) were also estimated. Variability was observed among Robusta coffee genotypes, with VP06, AS4, and AS10 being the most dissimilar. LB080 had the lowest dry fruit weight and the lowest percentage of grains in relation to husks. ZD156 accumulated more K in the grains, while VP06 and AS10 were the genotypes that accumulated more nutrients in the husks. Nutrients N, K, Ca, and P are accumulated in larger quantities, necessitating the calibration of mineral fertilization dosages and distribution. |
