Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 372

Full Length Research Paper

Genetic dissimilarity and growth of coffee in Cerrado

Cleiton Mateus Sousa
  • Cleiton Mateus Sousa
  • Federal Institute Goiano - Campus Ceres, Rod. GO 154, km 03, Ceres, Goiás, 76.300-000 Brazil.
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Welington Pereira
  • Welington Pereira
  • Federal Institute Goiano - Campus Ceres, Rod. GO 154, km 03, Ceres, Goiás, 76.300-000 Brazil.
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Marcos Gonçalves da Silveira
  • Marcos Gonçalves da Silveira
  • Federal Institute Goiano - Campus Ceres, Rod. GO 154, km 03, Ceres, Goiás, 76.300-000 Brazil.
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Mariella Camargo Rocha
  • Mariella Camargo Rocha
  • Federal Institute Goiano - Campus Ceres, Rod. GO 154, km 03, Ceres, Goiás, 76.300-000 Brazil.
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Vinicius Gonçalves Almeida
  • Vinicius Gonçalves Almeida
  • Federal Institute Goiano - Campus Ceres, Rod. GO 154, km 03, Ceres, Goiás, 76.300-000 Brazil.
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  •  Received: 30 April 2019
  •  Accepted: 26 June 2019
  •  Published: 30 November 2019

Abstract

Genetic dissimilarity can be used to identify promising genotypes for cultivation in specific conditions. Thus, the objective of this work is to study the genetic dissimilarity among 35 genotypes of Coffea arabica in the Cerrado, under irrigation, using phenological data and multivariate statistics. Plant height, stem diameter, canopy diameter, number of orthotropic branch nodes, length of orthotropic branch internodes, length of primary plagiotropic branches, and average plagiotropic branch internode length were evaluated at 6, 12, 18 and 24 months after planting. Data were analyzed using Hierarchical Agglomerative Cluster Analysis and Principal Component Analysis. Three clusters were formed for each evaluation (6, 12, 18 and 24 months). At 6 months, the most distant group consisted of Yellow Catucaí 2SL, Araponga MG 1, Sacramento MG 1, 23 II, Yellow Catucaí 20/15 pit 479, Sarchimor MG 8840, IBC-Palma 2, and New Acauã genotypes. At 12 months, the most distant group consisted of Yellow Catucaí 2SL, Asa Branca, Sacramento MG 1, and Sarchimor MG 8840. At 18 months, the most distant group consisted of Yellow Catucaí 2SL, Tupi IAC 1669-33, 23 II, Red Obatã IAC 1969-20, Sacramento MG 1, and Sarchimor MG 8840. At 24 months, Yellow Catucaí 2SL was distinct from the other 34 genotypes. Phenological variables strongly contributed to genetic dissimilarity (>75%) and there was a positive correlation for most variables.

Key words: Environment, Coffea arabica L., phenology, multivariate analysis, genetic, dissimilarity.