Electrical conductivity of coffee seeds in function of the number of seeds and imbibing period / Condutividade elétrica de sementes de café em função do número de sementes e período de embebição

• Autor(a) principal: Francisco, Gabrielly Fernanda
• Data de Publicação: 2019
• Outros Autores: Catão, Hugo Cesar Rodrigues Moreira, Marinke, Luana de Souza, Castilho, Ítala Menegon, Oliveira, Letícia Rodrigues, Caixeta, Franciele
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Veras
• Texto Completo: https://ojs.brazilianjournals.com.br/ojs/index.php/BRJD/article/view/5406
• topic: Coffea arabica; seed quality; vigor.

Coffee farming is one of the most expressive agricultural activities in Brazil. Coffee is a perennial crop with recalcitrant seeds, therefore, seed germination is irregular and lengthy. A fast evaluation of the quality coffee seeds is of an extreme importance. Thus, the objective of this work was to evaluate electrical conductivity of coffee seeds in function of the number of seeds and the imbibing period. To perform the experiments coffee seeds from four cultivars were used: IPR98, IPR100, IPR105 and IPR106. In the initial characterization the water content, the first and the last counting of the germination test and the accelerated aging of the seeds were determined. To determine seed vigor in a fast and precisely manner, the bulk electrical conductivity test was used, using replicates with 25 and 50 seeds at a temperature of 25 oC for the evaluation periods of 2, 4, 6, 8, 12 and 24 hours. A completely random design was used for the experiments. The electrical conductivity test is efficient to evaluate coffee seed vigor. Cultivar IPR98 showed more deteriorated seeds. The test performed with 25 seeds showed differences between cultivars with 24 hours of imbibing period. Using 50 seeds it is possible to evaluate the physiological quality of the cultivars starting at 4 hours of imbibing period.