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Agricultura Técnica

versión impresa ISSN 0365-2807

Resumen

DEVOTTO M., Luis  y  GERDING P., Marcos. Response of two Chilean Metarhizium anisopliae (Metschnikoff) Sorokin isolates to the addition of a solar sunscreen. Agric. Téc. [online]. 2003, vol.63, n.4, pp.339-346. ISSN 0365-2807.  http://dx.doi.org/10.4067/S0365-28072003000400001.

Two Chilean isolates of Metarhizium anisopliae (Metschnikoff) Sorokin (QU-M363 and QU-M221b) were exposed to increasing doses of ultraviolet light (UV) under laboratory conditions. Conidia suspended in aqueous solution were spread on Petri dishes containing agar-agar and were placed under a UV lamp (l = 254 nm). Without sunscreen, exposure of conidia to UV-C light reduced germination after 40 s from 80-95% to 5-2%, for QU-M221b and QU-M363, respectively. Using the solar screen Blankophor P167â at 1% w/v, conidia germination decreased after 40 s from 68-82% to 50-33% for QU-M221b and QU-M363, respectively. Results indicate that the sunscreen Blankophor P167 is a potential adjuvant to be used in biopesticides based on M. anisopliae.

Palabras clave : solar radiation; entomopathogenic fungi; sunscreen; biopesticides; UV light.

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