Abstract
Potato germplasm with high levels of combined resistance to potato viruses X, Y, and leafroll was identified and used to produce improved parental clones with similarly high levels of resistance. Resistance was determined from the amount of tuber infection following inoculation of plants in the field. Parental germplasm with the best multiple resistance came from two backgrounds, eitherSolanum tuberosum group Andigena derived from the Cornell University neo-tuberosum program, or from complex hybrids ofS. tuberosum and wild solanums that were produced by the Max Planck Institute and the Polish Institute for Potato Research. Two Aberdeen, ID selections, A85519-6 and A85530-10, with gp. Andigena ancestry, have had no tuber-borne infection of PVX, PVY, or PLRV during four years of intensive field testing. We have not been successful in combining virus S resistance with resistance to the other viruses.
Compendio
Se identificó germoplasma de papa con altos niveles de resistencia combinada a los virus X, Yy del enrollamiento de la hoja que fueron utilizados para producir clones parentales mejorados con similares niveles altos de resistencia. La resistencia fue determinada por la magnitud de infección en los tubérculos después de la inoculación de plantas en el campo. El germoplasma parental con la mejor resistencia multiple se originó de dos fuentes; de Solatium tuberosum grupo Andigena obtenido del programa de neo-tuberosum de la Universidad de Cornell o de híbridos complejos de S. tuberosum y solanum silvestres producidos por el Instituto Max Planck y el Instituto Polaco de Investigatión en Papa. Dos selecciones ID Aberdeen, A85519-6 y A85530-10, con herencia del grupo Andigena, no habían tenido infecciones de PVX, PVY o PLRV, originadas en tubérculos, durante cuatro anos de pruebas intensivas de campo. No se ha tenido éxito en combinar la resistencia al virus S con la resistencia a los otros virus.
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Corsini, D.L., Pavek, J.J., Martin, M.W. et al. Potato germplasm with combined resistance to leafroll virus and viruses X and Y. American Potato Journal 71, 377–385 (1994). https://doi.org/10.1007/BF02849399
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DOI: https://doi.org/10.1007/BF02849399