01909nam a2200229 a 450000100080000000500110000800800410001902200140006010000170007424500920009126000890018350001060027252011660037865000110154465000140155565300210156970000190159070000180160970000200162770000160164770000160166316555452023-06-30       2008    bl uuuu     u00u1 u    #d  a1982-56761 aSILVA, S. O.  aEvaluation of banana genotypes for resistance to Panama disease.h[electronic resource]  aTropical Plant Pathology, Brasília, DF, v. 33, p. 202, ago. 2008. Suplemento.c2008  aEdição dos Resumos do XLI Congresso Brasileiro de Fitopatologia, Belo Horizonte, ago. 2008. MEL-012  aIn this work 28 banana genotypes with different ploidy levels were evaluated for the resistance to Panama disease (Fusarium oxysporum f. sp. cubense - FOC). Ten plants of each genotype were planted in an area naturally infested by FOC using a totally randomized design. As susceptibility control, plants of the variety Maça ('Silk') were planted between each individual. Disease severity was assessed by mean of scale ranging from 0 to 4 (0: healthy plant and 4: dead plant). Most of he 'Maçã' plants (92%) showed symptoms of the disease evidencing a high inoculum pressure in the area. Regardless of ploidy levels, highly resistant genotypes were identified. Most of the diploid genotypes were classified as resistant. Among them, NBA-14 (AA) was highlighted, since produces comercial fruits with high carotenoids contents. Comercial tri- and tetraploid hybrids, such as PA9401 (AAB) and FHIA-02 (AAAA), respectively, were also ranked as resistant. These genotypes are promising for direct cultivar selection, introgression of resistance alleles in susceptible genotypes, as well as to elucidate the genetics basis of resistance to Panama disease in banana.  aBanana  aFusariose  aDonça de planta1 aRIBEIRO, L. R.1 aAMORIM, E. P.1 aCORDEIRO, Z. C.1 aLIMA, M. C.1 aDITA, M. A.