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Anais da Escola Superior de Agricultura Luiz de Queiroz

Print version ISSN 0071-1276

An. Esc. Super. Agric. Luiz de Queiroz vol.44 no.2 Piracicaba  1987

http://dx.doi.org/10.1590/S0071-12761987000200022 

Controle biológico da murcha de berinjela causada por Verticillium albo-atrum

 

Biological control of Verticillium wilt of eggplant

 

 

Itamar Soares de MeloI; Cyro Paulino da CostaII

IEngº Agrº, Dr., EMBRAPA/ESALQ/USP, Dep. de Genética
IIEngº Agrº, Ph.D., Dep. de Genética, ESALQ/USP

 

 


RESUMO

O controle biológico de Verticillium albo-atrum Reinke & Berth., agente causai da murcha de berinjela (Solanum melongena L.), foi feito em condições de laboratório e em condições de campo. Os melhores isolados de Trichoderma foram aqueles que apresentaram, em placas de Petri, uma zona de inibicão bem evidente. Trichoderma hamatum e o isolado T3 de Trichoderma reduziram sensivelmente a incidência da doença em condições de casa-de-vegetação. No campo, T. lignorum e o isolado T3 propiciaram os melhores resultados. Os mutantes de Trichoderma, obtidos por irradiação ultravioleta, não foram eficientes no biocontrole de Verticillium.

Termos de indexação: Verticillium albo-atrum, Trichoderma, Solanum melongena, isolados.


SUMMARY

The antagonistic activity of Trichoderma species against Verticillium wilt of eggplant was evaluated.
The studies were undertaken in vitro and in vivo. A clearly defined zone, in which the growth of the pathogen was inhibited, was observed with some isolates of Trichoderma in vitro. The best results of the btocontrol under greenhouse conditions were obtained with Trichoderma hamatum and with the isolate T3 of Trichoderma sp. In a field experiment, T. lignorum and the isolate significantly reduced the disease. The mutants of Trichoderma, obtained by UV irradiation, were not efficient in controlling the disease.


 

 

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LITERATURA CITADA

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Aceito para publicação em 29/10/87.

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