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Reação e resistência de porta-enxertos de tomateiro à murcha de fusário.

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  • معلومة اضافية
    • Alternate Title:
      Reaction and resistance of tomato rootstock to Fusarium wilt.
    • نبذة مختصرة :
      The aim o f this research was to verify the reaction of tomato rootstocks to race 3 o f F. oxysporum f. sp. lycopersici and his resistance to races 1 and 2. It was tested the rootstocks: Guardião, Helper-M, Anchor-T, Dr K, Kagemusha, Block, Magnet and He-man and, as a control, the cultivars 'Kada', 'Santa Clara', 'Gisele', 'BHRS 2,3'. The experimental design was a completely randomized type, with split-plots and 5 replicates. The rootstocks and cultivars were allocated in principal plot, and the 3 races o f F. oxysporum f. sp. lycopersici, in the sub-plots. The plants were inoculated and maintained in vegetation house with temperature and humidity controlled. The rootstock was assessedby the severity o f disease infection in the xylem. All rootstock were resistant to races I and 2 o f F. oxysporum f. sp. lycopersici and only Guardian and Block were resistant to race 3. [ABSTRACT FROM AUTHOR]
    • نبذة مختصرة :
      O objetivo deste trabalho fo i verificar a reação de resistência de porta-enxertos e cultivares de tomateiro à raça 3 de F. oxysporum f sp. lycopersici e a comprovação de sua resistência às raças 1 e 2. Os porta-enxertos testados foram: Guardião, Helper-M, Anchor-T, Dr. K, Kagemuscha, Block, Magnet e He-Man, e, como testemunhas, as cultivares 'Kada', 'Santa Clara', 'Gisele', 'BHRS 2,3'. O delineamento experimental utilizado fo i o inteiramente casualizado, com parcelas subdivididas e 5 repetições, sendo os porta-enxertos e as cultivares, alocados na parcela principal e as 3 raças de F oxysporum f. sp. lycopersici, nas subparcelas. As plantas foram inoculadas e mantidas em casa de vegetação com temperatura e umidade controladas. Os portaenxertos foram avaliados pela severidade de infecção do fungo no xilema. Todos os porta-enxertos foram resistentes às raças 1 e 2 de Fusarium oxysporum f. sp. lycopersici e apenas Guardião e Block foram resistentes à raça 3. [ABSTRACT FROM AUTHOR]