Resistance of new Coffea canephora clones to root-knot nematode (Meloidogyne incognita) in the western amazon


  • Vaneide Araújo de Sousa Rudnick Universidade Federal de Rondônia/UNIR, Rede de Biodiversidade e Biotecnologia da Amazônia Legal/BIONORTE, Porto Velho, RO.
  • José Roberto Vieira Junior Empresa Brasileira de Pesquisa Agropecuária/Embrapa, Embrapa Agroindústria Tropical, Fortaleza, CE.
  • Cleberson de Freitas Fernandes Empresa Brasileira de Pesquisa Agropecuária/Embrapa, Embrapa Agroindústria Tropical, Fortaleza, CE.
  • Rodrigo Barros Rocha Empresa Brasileira de Pesquisa Agropecuária/Embrapa, Centro de Pesquisa Agroflorestal de Rondônia, Embrapa Rondônia, Porto Velho, RO.
  • Alexsandro Lara Teixeira Empresa Brasileira de Pesquisa Agropecuária/Embrapa, Centro de Pesquisa Agroflorestal de Rondônia, Embrapa Rondônia, Porto Velho, RO.
  • André Rostand Ramalho Empresa Brasileira de Pesquisa Agropecuária/Embrapa, Centro de Pesquisa Agroflorestal de Rondônia, Embrapa Rondônia, Porto Velho, RO.
  • Marcelo Curitiba Espindula Empresa Brasileira de Pesquisa Agropecuária/Embrapa, Centro de Pesquisa Agroflorestal de Rondônia, Embrapa Rondônia, Porto Velho, RO.
  • Anderson Vieira Santos Universidade Luterana do Brasil/ULBRA, Canoas, RS.
  • Elize Francisca Mendes dos Anjos Universidade Federal de Rondônia/UNIR, Rolim de Moura, RO.
  • Francisco Paiva Uchoa Universidade Federal de Rondônia/UNIR, Rolim de Moura, RO.


coffee, myeloidogynose, plant selection


Root-knot disease is among the main diseases affecting coffee crop. The plant selection to the development new resistant cultivars is among one the most efficient methods of control. The present work aimed to quantify the resistance responses of Coffea canephora clones to root-knot nematode Meloidogyne incognita in the Western Amazon. For this, 17 previously selected clones were evaluated in three experimental trials, carried out in the municipalities of Ji-Paraná and Porto Velho, Rondônia. The resistance to root-knot nematodes M. incognita were evaluated by the numbers of gall in the roots (NG) and by the reproductive factor (RF). The resistance response was also interpreted according the genetic diversity of the clones based in their morphological traits. The clones BRS3210, C12, BRS2314, BRS3137 and BRS1216 are resistant to M. incognita with RF of 0.34, 0.62, 0.79, 0.86 and 0.98, respectively. BRS3213, C125, C15, BRS2336, BRS3220 and C09 clones were classified as susceptible, with RF of 1.93, 1.95, 2.00, 2.31, 2.32 and 2.35. The BRS3193, C160
and BRS2357 clones were classified as very susceptible, with RF values of 3.03, 4.41 and 5.82, respectively. The clustering based on the genetic diversity of morphological traits indicated that genotypes more similar to the Robusta botanic variety had lower RF. The hybrid plants showed intermediate degrees of resistance indicating the segregation for the character of the M. incognita resistance. The clones BRS3210, C12, BRS2299, BRS2314, BRS3137 and BRS1216
expressed resistance responses to M. incognita with potential for growing resistant genotypes in the Western Amazon.

Key words: Coffee; root-knot disease; plant breeding; Amazonian.


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How to Cite

RUDNICK, V. A. DE S.; VIEIRA JUNIOR, J. R.; FERNANDES, C. DE F.; ROCHA, R. B.; TEIXEIRA, A. L.; RAMALHO, A. R.; ESPINDULA, M. C.; SANTOS, A. V.; ANJOS, E. F. M. DOS; UCHOA, F. P. Resistance of new Coffea canephora clones to root-knot nematode (Meloidogyne incognita) in the western amazon. Coffee Science - ISSN 1984-3909, v. 15, p. e151708, 2 Sep. 2020.