01993nam a2200229 a 450000100080000000500110000800800410001902200140006010000190007424501310009326000890022450001070031352012090042065000110162965000220164065000140166270000170167670000170169370000150171070000220172570000160174716555442023-06-30       2008    bl uuuu     u00u1 u    #d  a1982-56761 aRIBEIRO, L. R.  aSoil distribution of Fusarium oxysporum in area used for banana screening to Panama disease resistance.h[electronic resource]  aTropical Plant Pathology, Brasília, DF, v. 33, p. 177, ago. 2008. Suplemento.c2008  aEdição dos Resumos do XLI Congresso Brasileiro de Fitopatologia, Belo Horizonte, ago. 2008. EPI-019.  aThe distribution of Fusarium oxysporum (FO) was evaluated in an area used for banana screening to Panama disease resistance (F. oxysporum f. sp. cubense - FOC). The severity was assessed aiming to test the relationship between FO colonies counted in Komada medium and disease intensity. The FO spatial distribution was highly variable (Standardized Morisita's Index - SMI= 0.551) but spatial dependence among the sampled points was not verified (SADIE and LCORR analyses). Most of the 'Maçã' plants (92%) used as susceptible control, showed different levels of disease intensity, but no relation with FO distribution was found. In order to estimate the FOC quantity, 10 colonies from each sampled point were transferred to PDA medium and compared with a FOC strain isolated from the same area. Despite of the increment in FOC-like colonies variability (SMI= 0.625), no significant change in the spatial pattern was noted. In addition, no relation of FOC-like colonies and disease intensity was observed. Studies addressed to develop efficient tools for quantitative detection of FOC from soil, as well as to determine the minimum FOC inoculum necessary to cause Panama disease are currently undergoing.  aBanana  aDoença de Planta  aFusariose1 aSILVA, S. O.1 aSOUZA, F. P.1 aSANTOS, M.1 aLARANJEIRA, F. F.1 aDITA, M. A.