Characterization of Resistance to Pepper Huasteco Geminivirus in Chili Peppers from Yucatán, México

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  • 1 Instituto Nacional de Investigaciones Forestales y Agropecuarias (INIFAP), Apartado Postal 112, Celaya, Gto, México
  • 2 Departamento de Ingeniería Genética, Centro de Investigación y de Estudios Avanzados del IPN, Unidad Irapuato, Apartado Postal 629, Irapuato, Gto, México
  • 3 Departamento de Ingeniería Bioquímica, Instituto Tecnológico de Celaya, Apartado Postal 57, Celaya, Gto, México

Seven pepper (Capsicum chinense Jacq.) populations from the Yucatán Peninsula, México, that were selected from a field screening for viral diseases were tested for pepper huasteco geminivirus (PHV) resistance. Two populations (UX-SMH-1 and UX-SMH-24) displayed <50% of infection with PHV. Four plants did not show viral symptoms 3 months postinoculation using biolistic and grafting methods. When leaf tissue from these individuals was analyzed for PHV using quantitative PCR, it supported PHV replication, thus, the ineffective PHV infection in these symptomless individuals may be a result of restricted viral movement.

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