Effect of temperature on in vitro growth and sporulation of hyperparasites fungi of Asperisporium caricae

Authors

  • Janieli Maganha Silva Vivas Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Centro de Ciências e Tecnologias Agropecuárias, Laboratório de Entomologia e Fitopatologia, Campos dos Goytacazes, RJ, Brasil.
  • Marcelo Vivas Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Centro de Ciências e Tecnologias Agropecuárias, Laboratório de Entomologia e Fitopatologia, Campos dos Goytacazes, RJ, Brasil.
  • Silvaldo Felipe da Silveira Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Centro de Ciências e Tecnologias Agropecuárias, Laboratório de Entomologia e Fitopatologia, Campos dos Goytacazes, RJ, Brasil.

Keywords:

Carica papaya L., Acremonium spp., Hansfordia pulvinata.

Abstract

Black spot is the major papaya foliar fungal disease, being its chemical control necessary to achieve an economic commercial production. Alternative control methods, concerning fungicides, are necessary for the sustainable production of higher quality papaya fruits. Among them, biological control lacks basic studies. This study aimed to determine the proper temperature conditions for in vitro mycelial growth and sporulation of hyperparasites fungi isolated from Asperisporium caricae in papaya, which are potential biocontrol agents. A total of 18 fungal isolates (eight from Hansfordia pulvinata and ten from Acremonium spp.) were grown on PDA medium, at 15 ºC, 20 ºC, 23 ºC, 25 ºC, 27 ºC and 30 ºC, under a 12-hour photoperiod. For H. pulvinata isolates, mild temperatures around 21 ºC result in maximum mycelial growth and sporulation. For Acremonium spp. isolates, the optimum temperature for mycelial growth and sporulation occurs at 20-25 ºC.

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Published

2015-03-13

How to Cite

VIVAS, J. M. S.; VIVAS, M.; SILVEIRA, S. F. da. Effect of temperature on in vitro growth and sporulation of hyperparasites fungi of Asperisporium caricae. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 45, n. 1, p. 73–81, 2015. Disponível em: https://revistas.ufg.br/pat/article/view/29774. Acesso em: 22 dec. 2024.

Issue

v. 45, n. 1, Jan./Mar. 2015

Section

Plant Protection

License

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