Genetic diversity in Coffea canephora genotypes for leaf nutrient concentration

Autores/as

  • Cleidson Alves da Silva Department of Agriculture. Universidade Federal de Lavras. Lavras. Minas Gerais. Brazil.
  • Eileen Azevedo Santos Laboratory of Genetics and Plant Breeding. Universidade Estadual do Norte Fluminense Darcy Ribeiro. Campos dos Goytacazes. Rio de Janeiro. Brazil.
  • Alexandre Pio Viana Laboratory of Genetics and Plant Breeding. Universidade Estadual do Norte Fluminense Darcy Ribeiro. Campos dos Goytacazes. Rio de Janeiro. Brazil.
  • Jairo Rafael Machado Dias Department of Agronomy. Universidade Federal de Rondônia. Rolim de Moura. Rondônia. Brazil.
  • Fábio Luiz Partelli Department of Agrarian and Biological Sciences. Universidade Federal do Espírito Santo. São Mateus. Espírito Santo. Brazil.

DOI:

https://doi.org/10.48162/rev.39.003

Palabras clave:

Café conilon, Periodo de muestreo, Nutrición mineral, Análisis multivariante

Resumen

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This study analyzed the genetic diversity in Coffea canephora genotypes by univariate and multivariate statistical analysis, based on concentrations of macro- and micronutrients in coffee leaves in the stages of pre-flowering and grain filling. The experiment was arranged in randomized blocks with three replications, in a 42x2 factorial design, in which factor one represented the evaluated genotypes and factor two the periods of leaf sampling, i.e., pre-flowering and grain filling. The data of leaf nutrient concentrations were subjected to analysis of variance by the F test (p <0.01), and genetic parameters were estimated. For the study of genetic diversity, the genotypes were grouped by the hierarchical unweighted pair-group method using arithmetic averages (UPGMA). The relative importance of a trait to predict genetic diversity was also studied. There is genetic divergence for leaf nutrient concentration in C. canephora genotypes. With a maximum limit of 60% of dissimilarity between genotypes, four groups were also formed by UPGMA. For the 42 evaluated genotypes, leaf S concentration was the most important trait for genetic diversity; this genotypic variability should be investigated to enhance the efficiency of nutritional diagnosis.

Highlights

  • There is genetic variability for leaf nutrient concentration in Coffea canephora
  • The leaf concentration of nutrients in the phenological stage of pre-anthesis is different from the leaf concentration of nutrients in the coffee bean filling period.
  • Leaf concentration of sulfur was the characteristic that contributed most to the genetic diversity among the 42 genotypes, followed by the concentration of copper, boron and magnesium.
  • Genotypic variability for leaf nutrient concentration should be considered for better nutritional management.

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Publicado

07-07-2021

Cómo citar

Alves da Silva, C., Azevedo Santos, E., Pio Viana, A., Machado Dias, J. R., & Partelli, F. L. (2021). Genetic diversity in Coffea canephora genotypes for leaf nutrient concentration. Revista De La Facultad De Ciencias Agrarias UNCuyo, 53(1), 22–34. https://doi.org/10.48162/rev.39.003

Número

Sección

Genética y mejoramiento vegetal