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Adaptability, stability, and genetic divergence of conilon coffee in Alto Suaçuí, Minas Gerais, Brazil
(Crop Breeding and Applied Biotechnology, 2017-01) Silva, Vânia Aparecida; Machado, Janaine Lopes; Rezende, Juliana Costa de; Oliveira, Alexandrino Lopes de; Figueiredo, Ulisses José de; Carvalho, Gladyston Rodrigues; Ferrão, Maria Amélia Gava; Guimarães, Rubens José
The objective of this study was to describe the genetic parameters, adapt- ability, and stability of clones from the Coffea canephora variety ‘Vitória Incaper 8142’, and the genetic divergence between them. Following 12 and 24 months of plant growth, several traits were evaluated, including stem diameter, plant height, canopy diameter, number of plagiotropic branches, and number of nodes per plagiotropic branch. The agronomic performance of four crops was determined using measurements of productivity, yield, percentage of floating grains, and grade of the beans. Variability was observed between the clones for the majority of the traits measured. The clones V7, V10, V12, and V13 were the most stable and displayed the highest degree of adaptation for the studied traits, and thus these clones will be used to establish a base population suited to the growing conditions in Alto Suaçuí, Minas Gerais, Brazil. Additionally, the genetic dissimilarity identified between clones allowed suitable clone combinations to be proposed for use in future crosses.