Occurrence of Alternaria alternata (Fr.:Fr.) Keissl. on potato tuber in Brazil

Authors

  • Camila Vilela Vasconcelos Universidade Estadual de Goiás (UEG), Laboratório de Fitopatologia, Ipameri, GO, Brasil.
  • Diana Cristina da Silva Universidade Estadual de Goiás (UEG), Laboratório de Fitopatologia, Ipameri, GO, Brasil.
  • Daniel Diego Costa Carvalho Universidade Estadual de Goiás (UEG), Laboratório de Fitopatologia, Ipameri, GO, Brasil.

Keywords:

Solanum tuberosum L., mycology, potato early blight.

Abstract

The Alternaria alternata has been already isolated from potato leaves, in Brazil, however, the occurrence of this fungus on potato tuber has never been reported. This study aimed at confirming the occurrence of A. Alternata in lesions present in potato tubers. Thus, lesions on the diseased tubers were examined in a stereomicroscope, in order to prepare semipermanent microscope slides by removing the mycelium and fungal structures found on the infected tuber tissue. The conidia presented the shape of an inverted pear, light brown, with dimensions of 19.7-45.4 x 8.5-18.6 ?m (28.3 x 12.5 ?m), and 2-6 (4) transversal and 1-5 (2) longitudinal septa, while the conidia beaks measures were 2.6-11.9 ?m (4.4 ?m). These features characterized the fungus as A. alternata.

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Author Biographies

Camila Vilela Vasconcelos, Universidade Estadual de Goiás (UEG), Laboratório de Fitopatologia, Ipameri, GO, Brasil.

Laboratório de Fitopatologia - UEG

Diana Cristina da Silva, Universidade Estadual de Goiás (UEG), Laboratório de Fitopatologia, Ipameri, GO, Brasil.

Laboratório de Fitopatologia

Daniel Diego Costa Carvalho, Universidade Estadual de Goiás (UEG), Laboratório de Fitopatologia, Ipameri, GO, Brasil.

Laboratório de Fitopatologia - UEG

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Published

2014-07-16

How to Cite

VASCONCELOS, C. V.; SILVA, D. C. da; CARVALHO, D. D. C. Occurrence of Alternaria alternata (Fr.:Fr.) Keissl. on potato tuber in Brazil. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 2, n. 1, p. 219–222, 2014. Disponível em: https://revistas.ufg.br/pat/article/view/25319. Acesso em: 21 nov. 2024.

Issue

v. 44, n. 2, Apr./Jun. 2014

Section

Scientific Note

License

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