In vitro antagonism of Trichoderma spp. strains against Sarocladium oryzae (Sawada) W. Gams & D. Hawksworth

Revista de Protecci贸n Vegetal

Martínez, Benedicto¹  Obret, Yalainne¹  Reyes, Yusimy³  Pérez, Simón² 

[1] Centro Nacional de Sanidad Agropecuaria (CENSA), Mayabeque, Cuba;IDEA, Caracas, Venezuela;Universidad Agraria de La Habana (UNAH), Mayabeque, Cuba

关键词: subtract competence;    mycoparasitism;    dual culture;   

DOI  :  

学科分类：农业科学（综合）

来源: Centro Nacional de Sanidad Agropecuaria

【 摘 要 】

Twenty seven isolates of Trichoderma spp. were evaluated against two of Sarocladium oryzae (Sawada) W. Gams & D. Hawksworth (S. o-2 y S. o-4) in dual culture. The action modes in the different interaction phases was determined by comparing the growth of Sarocladium colonies. The data were analyzed using Student`s t test. With isolates S. o-2 and S.o 4,competition by the substrate was shown by 81,48% of the Trichoderma isolates, 25,93% antibiosis and 11,11% mycoparasitism. Two Trichoderma isolates (T.4 and T.5) against the isolate S. o -4 showed the three antagonism types, whereas against S. o-2, they showed only competition for the substrate. This is an evidence of sensitivity variability of the phytopathogen isolates against the antagonist. Among the Trichoderma isolates, T.29 ,with a marked antibiotic effect, and T.6, with more than two antagonism types, were the most promising against both pathogen isolates.

【 授权许可】

Unknown