Genetic variability in conilon coffee related to grain attributes in an irrigated crop in the Cerrado.

The objective of this work was to quantify the genetic variability of 213 conilon coffee accessions of the Robusta Tropical cultivar, based on chemical characteristics related to the quality of green coffee beans, as well as to identify promising accessions for the breeding program of irrigated conilon coffee in the Brazilian Cerrado. The chemical characteristics evaluated were: protein and caffeine contents, total soluble solids and total lipids, ether extract, pH, and total titratable acidity. The data were subjected to the principal component analysis and cluster analysis based on the similarities observed within the first two principal components using the minimum variance method (Wards) and, as a measure of similarity, the Euclidean distance. The three main components explained 72.64% of the total variation of the data. All characteristics, except pH, were correlated with the first three components. It was possible to separate the genotypes in three clusters, according to the similarities observed in the behavior of the variables. The evaluated accessions present genetic variability regarding the assessed quality characteristics of green coffee beans, and CPAC 160 and CPAC 32 are the most promising for the breeding program of conilon coffee for cultivation under irrigation in the Cerrado.Título em português: Variabilidade genética em café conilon relativa aos atributos dos grãos em cultivo irrigado no Cerrado

Estimativa de parâmetros genéticos, correlações fenotípicas e ambientais em girassol do cerrado do Distrito Federal.

Título em inglês: Estimation of genetic parameters, phenotypical and environmental correlations in sunflower at Distrito Federal

Efeito temporal sobre caracteristicas morfoagronomicas de genótipos de girassol no cerrado do Distrito Federal em safrinha de 2015 e 2016.

Título em inglês: Temporal effect on morphoagronomic characteristics of genotypes of sunflower in the brazilian savannah at Distrito Federal in the second crop of 2015 and 2016

Avaliação de parâmetros genéticos e caracterização morfoagronomica de girassol em três nucleos rurais do Distrito Federal.

Título em inglês: Evaluation of genetic parameters and morphoagronomic characterization of sunflower in three rural centers of Distrito Federal

Diversidade genética em genótipos de girassol no cerrado do Distrito Federal.

Título em inglês: Genetic diversity in sunflower genotypes in the brazilian savanna at Distrito Federal