African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Sanitary analysis, transmissibility and pathogenicity of fungi associated with cashew nuts

Jaiza Francisca Ribeiro Chagas
  • Jaiza Francisca Ribeiro Chagas
  • Departamento de Produção Vegetal, Universidade Federal do Tocantins, Caixa Postal 66, 77402-970 - Gurupi, TO, Brasil.
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Solange Aparecida Sagio
  • Solange Aparecida Sagio
  • Departamento de Produção Vegetal, Universidade Federal do Tocantins, Caixa Postal 66, 77402-970 - Gurupi, TO, Brasil.
  • Google Scholar
Evelynne Urzedo Leao
  • Evelynne Urzedo Leao
  • Departamento de Produção Vegetal, Universidade Federal do Tocantins, Caixa Postal 66, 77402-970 - Gurupi, TO, Brasil.
  • Google Scholar
Aloisio Freitas Chagas Junior
  • Aloisio Freitas Chagas Junior
  • Departamento de Produção Vegetal, Universidade Federal do Tocantins, Caixa Postal 66, 77402-970 - Gurupi, TO, Brasil.
  • Google Scholar
Marcos Vinicius Giongo
  • Marcos Vinicius Giongo
  • Departamento de Ciências Florestais e Ambientais, Universidade Federal do Tocantins, Caixa Postal 66, 77402-970 - Gurupi, TO, Brasil.
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Raimundo Wagner de Sousa Aguiar
  • Raimundo Wagner de Sousa Aguiar
  • Departamento de Produção Vegetal, Universidade Federal do Tocantins, Caixa Postal 66, 77402-970 - Gurupi, TO, Brasil.
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Rodrigo Ribeiro Fidelis
  • Rodrigo Ribeiro Fidelis
  • Departamento de Produção Vegetal, Universidade Federal do Tocantins, Caixa Postal 66, 77402-970 - Gurupi, TO, Brasil.
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Gil Rodrigues dos Santos*
  • Gil Rodrigues dos Santos*
  • Departamento de Produção Vegetal, Universidade Federal do Tocantins, Caixa Postal 66, 77402-970 - Gurupi, TO, Brasil.
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  •  Received: 16 September 2016
  •  Accepted: 08 November 2016
  •  Published: 26 January 2017

Abstract

There are few reports of transmission of fungus associated with cashew nuts (Anacardium occidentale L.) in Brazil and worldwide. Thus, the aim of this study was to evaluate the incidence and severity of anthracnose on leaves and fruits (nuts) of cashew, nuts sanitary analysis, nuts-seedling transmission and pathogenicity of fungi associated with cashew nuts. To this end, leaves and nuts of cashew collected in the cities of Gurupi and Formoso do Araguaia, Tocantins state, Brazil, were used. The anthracnose average incidence and disease index were evaluated by observing the typical symptoms of the disease. The nuts were subjected to sanity analysis, by the filter paper method and transmission test via nuts for the seedlings. High anthracnose incidence and severity were observed in leaves and cashews nuts. Aspergillus sp. Cladosporium sp. and Colletotrichum gloeosporioides showed high incidence in all nuts samples analyzed. There was high anthracnose transmission by the nuts for the seedlings. Only C. gloeosporioides was pathogenic to cashew seedlings. Higher germination rates were observed with lower levels of lesions on the external surface. The fungal association with cashews nuts damaged generally normal seedlings development and quality.

Key words: Anacardium occidentale, Colletotrichum gloeosporioides, anthracnose, sanitary analysis.