Relative competitiveness in HD285 of the pvr23 resistance‐breaking mutants SON41p‐119N and CI‐119N issued from clone SON41p and the cylindrical inclusion (CI) chimera, respectively, and carrying the 119N mutation in their genome‐linked viral protein (VPg). 1:1, SON41p‐119N and CI‐119N inocula were calibrated and mixed in the ratio of 1:1; 4:1, SON41p‐119N and CI‐119N inocula were calibrated and mixed in the ratio 4:1; dpi, days post‐inoculation.