Genetic divergence between coffee genotypes resistant to rust based on anatomical features

Authors

  • Mariana Thereza Rodrigues Viana Federal University of Lavras
  • Tamara Cubiaki Pires da Gama Federal University of Lavras
  • Janine Magalhães Guedes Federal University of Lavras
  • Rubens José Guimarães Federal University of Lavras
  • Harianna Paula Alves de Azevedo Federal University of Lavras
  • Dalyse Toledo Castanheira Federal University of Lavras
  • Vicente Luiz Naves Federal University of Lavras

DOI:

https://doi.org/10.5965/223811711732018547

Keywords:

coffea arabica, germplasm bank, improvement, leaf anatomy., leaf anatomy

Abstract

The objective of this study was to evaluate the genetic divergence of coffee genotypes resistant to rust, of the Germplasm Bank from Minas Gerais, based on anatomical features. A total of 12 foliar anatomical characteristics were assessed, and Mahalanobis distance was used to quantify the genetic divergence between genotypes. The Tocher method and the hierarchical method of UPGMA (Unweighted Pair-Group Method Using Arithmetic Averages) were used as group strategy. Moreover, relative contribution analyses of the variables were made. There was genetic variability between genotypes, and the analysis of Tocher and UPGMA grouping separated the genotypes into five and seven distinct groups, respectively. The MG 0582 genotype stood out as the most divergent based on the evaluated anatomical features. There is great genetic variability for the characteristics of foliar anatomy among the 15 genotypes evaluated, allowing to select superior genotypes based on these characteristics.

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Published

2018-11-14

How to Cite

VIANA, Mariana Thereza Rodrigues; GAMA, Tamara Cubiaki Pires da; GUEDES, Janine Magalhães; GUIMARÃES, Rubens José; AZEVEDO, Harianna Paula Alves de; CASTANHEIRA, Dalyse Toledo; NAVES, Vicente Luiz. Genetic divergence between coffee genotypes resistant to rust based on anatomical features. Revista de Ciências Agroveterinárias, Lages, v. 17, n. 4, p. 547–555, 2018. DOI: 10.5965/223811711732018547. Disponível em: https://periodicos.udesc.br/index.php/agroveterinaria/article/view/10481. Acesso em: 22 dec. 2024.

Issue

Vol. 17 No. 4 (2018)

Section

Research Article - Science of Plants and Derived Products

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Copyright (c) 2018 Revista de Ciências Agroveterinárias (Journal of Agroveterinary Sciences)

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