Evaluation of resistance in non-transgenic control Mexican limes and in transgenic lines expressing the CTV p25 CP gene. Comparison
of the response to CTV T-305 graft-inoculation in the susceptible lines MCP.21 and SCP.25, and in the protected lines SCP.10 and
SCP.16 (a, b). Protection against CTV T-300 in transgenic lines SCP.13, SCP.15 and MCP.24 inoculated by aphid feeding (c, d). Symptom
intensity estimated in a 0 to 3 scale of vein clearing/leaf distortion in symptomatic plants. Vertical bars indicate SE.