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Print version ISSN 0006-8705On-line version ISSN 1678-4499

Bragantia vol.33 no.unico Campinas  1974 



Efeito da luz no crescimento e na esporulação de Ceratocystis fimbriata Ell. & Halst1


The effects of light on the mycelial growth and sporulation of Ceratocystis fimbriata Ell. & Halst



Jaciro Soave; Ivan José Antunes Ribeiro; Osvaldo Paradela Filho2; Gwynne & Broadhead3




This paper reports the effect of light on the growth and sporulation of the fungus Ceratocystis fimbriata isolated from Mangifera indica L.
The tests were conducted in Petri dishes with synthetic agar medium, and established in randomized plots with 6 treatments and 3 replications.
The following treatments were studied: A. constant light (neon bulb); B. alternate light and darkness (day and night); C. constant darkness plus two radiations with U.V.; D. constant light plus two radiations with U.V.; E. constant and total darkness; F. culture medium exposed to U.V., inoculated and maintained at constant light.
The treatments F, A and B were the best for growth, while C, D, and E were the worst ones.
Sporulation occurred in all treatments, but the best perithecia with asco-spores production occurred in the D treatment.



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Recebido para publicação em 7 de janeiro de 1974.



1 Trabalho apresentado na XXII Reunião Anual da Sociedade Brasileira Para o Progresso da Ciência, julho de 1970, Salvador, BA.
2 Com bolsas de suplementação do CNPq.
3 G´WYNNE V.H . & BROADHEAD, Q. E. Contributions to the study of Ceratocystis fimbriata.Ann Bot. 50:747-748, 1936.

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