Physiological response of Poncirus trifoliatarootstock to infection by an RB of Citrus tristeza virus isolate. [Respuesta fisiológica del portainjerto Poncirus trifoliataa la infección por un aislado RB de Citrus tristeza virus.]. [Resposta fisiológica do porta-enxerto Poncirus trifoliataa infecção por um isolado RB do Citrus triteza virus.]
ABSTRACT.- In citrus growing areas where Citrus tristeza virus (CTV) is endemic, Poncirus trifoliata is commonly used as a rootstock to prevent tree decline. However, resistance breaking (RB) CTV isolates, capable of systemically infecting P. trifoliata, have been identified. Nevertheless, their effects on the rootstock remain understudied. Therefore, the aim of this work was to evaluate the physiological response of P. trifoliata to infection by a local RB isolate (RB-UY1), and determine its effects on grafted scions, using Navel orange (N/P. trifoliata) and Mexican lime (ML/P.
