Quantification of postharvest diseases of guava accessions cultivated in organic system

Authors

  • Juliana Altafin Galli Apta Regional Centro Norte
  • Ivan Herman Fischer Apta Regional Centro Oeste
  • Maria Cecília de Arruda Palharini Apta Regional Centro Oeste
  • Marcos Doniseti Michelotto Apta Regional Centro Norte

Keywords:

Psidium guajava, anthracnose, black spot, stem-end rot.

Abstract

Among the postharvest diseases that occur in guava, anthracnose, black spot and stem-end rot are the most common. The incidence and diversity of these diseases depend on the host genotype. This study aimed to identify and quantify the postharvest diseases of guava accessions cultivated in organic system. For the characterization of diseases, 30 fruits from 48 accessions were evaluated in a completely randomized design. Anthracnose and black spot were the most frequent postharvest diseases in guava. The Vermelha Redonda (Shimoda), L5P21, L3P12, EEF-3, IAC-4 - Unesp and Monte Alto - Comum 1 accessions stood out with the lowest incidence of anthracnose and black spot, while L4P13, L1P2 and Creme Arredondada (Unesp) showed the highest incidence of anthracnose, black spot and stem-end rot. The Fusicoccum sp., Phomopsis sp., Phoma sp., Dothiorella sp. and Lasiodiplodia sp. pathogens were identified as the main responsible for causing stem-end rot symptoms.

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Author Biographies

Juliana Altafin Galli, Apta Regional Centro Norte

Fitotecnia, com ênfase em fruticultura, fitopatologia e sementes

Ivan Herman Fischer, Apta Regional Centro Oeste

Fitopatologia, com ênfase em fruticultura

Maria Cecília de Arruda Palharini, Apta Regional Centro Oeste

Tecnologia pós colheita de frutas

Marcos Doniseti Michelotto, Apta Regional Centro Norte

Entomologista

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Published

2015-06-24

How to Cite

GALLI, J. A.; FISCHER, I. H.; PALHARINI, M. C. de A.; MICHELOTTO, M. D. Quantification of postharvest diseases of guava accessions cultivated in organic system. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 45, n. 2, p. 225–230, 2015. Disponível em: https://revistas.ufg.br/pat/article/view/33713. Acesso em: 16 aug. 2024.

Issue

v. 45, n. 2, Apr./Jun. 2015

Section

Plant Protection

License

Authors will not be paid for published articles and must waive their copyright in favor of the PAT journal. On the other hand, they are solely responsible for the content of those articles, even if the Editor holds the right to adjust them to the norms of the journal. Authors are allowed to publish their articles simultaneously in their institutional repositories, as soon as the original publication at the PAT journal is mentioned.