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摘要
O papel de Rhizoctonia spp. binucleadas (RBN), no biocontrole de doen as causadas por R. solani K邦hn em v芍rias culturas, tem sido relatado na literatura. No entanto, n o h芍 informa o, no Brasil, sobre o potencial de RBN como agentes de biocontrole contradoen as causadas por Rhizoctonia na soja. A hip車tese testada foi de que isolados de RBN podem induzir resist那ncia na soja contra a mela, causada por R. solani do grupo de anastomose (AG) 1 IA. Desta forma, o objetivo deste trabalho foi avaliar isolados de RBN, obtidos de amendoim, feij o e soja quanto 角 capacidade de induzir resist那ncia na soja contra a mela, em condi es de casa de vegeta o. Esta pesquisa evidencia a a o de RBN na indu o de resist那ncia em plantas de soja contra a mela. Entretanto, a manifesta o e a efetividade do fen meno de indu o de resist那ncia s o dependentes da 谷poca de cultivo da soja. The role of non-pathogenic binucleate Rhizoctonia spp. (BNR) onthe biocontrol of diseases caused by R. solani on many crops has been reported in the literature. However, in Brazil, there is no information about the potential of BNR as biocontrol agents against Rhizoctonia diseases on soybean. On this research we tested thehypothesis that BNR can induce resistance on soybean against the foliar blight caused by R. solani anastomosis group (AG) 1 IA. Thus, the objective of this research was to evaluate BNR isolates isolated from peanuts, snapbeans and soybean according to their ability forinducing resistance on soybean against the foliar blight disease, under greenhouse conditions. This research evidenced the role of BNR inducing resistance on soybeans against the foliar blight. However, both the occurrence and effectiveness of the phenomenon of induced resistance are dependent on the soybean cultivation season.
