Avaliação de métodos para preservação de isolados de Corynespora cassiicola (Berk. & M.A. Curtis) C.T. Wei

Corynespora cassiicola (Berk. & M.A. Curtis) C.T. Wei is the causal agent for target spot on several economically important crops. So, studies on the C. cassiicola isolates preservation are necessary to maintain mycelium growth and sporulation, during experiments. The objective of this study was to evaluate the efficiency of three isolates preserving methods: Castellani, periodical transference, and mineral oil, during six months of storage. The evaluations were carried out by analyzing mycelial growth on potato-dextrose-agar medium. It was observed that mycelial growth was higher in the periodical transference method, sporulation was a little higher in the Castellani method, and all methods preserved isolates pathogenicity. Thus, for that phythopatogen, the Castellani method is the most recommended one.