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Efectividad antagónica In Vitro de Trichoderma sp., frente a Stemphylium lycopersici


 
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Cultivos Tropicales

 ISSN 1819-4087

POZO-SERRANO, Jonathan et al. Efectividad antagónica In Vitro de Trichoderma sp., frente a Stemphylium lycopersici. []. , 40, 3   04--2019. ISSN 1819-4087.

^a

Stemphylium lycopersici constituye uno de los agentes causales de la mancha gris en las hojas del tomate, patología recurrente y extendida en los cultivos de tomate en Holguín. Se evaluó el antagonismo in vitro de Trichoderma harzianum cepas A-34, A-53 y Trichoderma viride TS-3, frente a Stemphylium lycopersici. El enfrentamiento se realizó mediante un ensayo de antagonismo en medio de cultivo Agar Papa Dextrosa (APD). El indicador evaluado fue el porcentaje del índice de inhibición micelial IM (%). Las tres cepas demostraron una elevada efectividad antagónica in vitro frente a Stemphylium lycopersici.

^les^a

Stemphylium lycopersici is one of the causal agents of the gray spot on the tomato leaves, a recurrent and widespread pathology in tomato crops in Holguín. The in vitro antagonism of Trichoderma harzianum strains A-34, A-53 and Trichoderma viride TS-3 was evaluated against Stemphylium lycopersici. The confrontation was carried out by means of an antagonism assay in Papa Dextrose Agar PDA culture medium. The indicator evaluated was the mycelial inhibition percentage IM (%).The three strains of Trichoderma sp. showed high antagonistic effectiveness in vitro against Stemphylium lycopersici.

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