The chimeric (carrying the EB4) and putative wild-type CGMMV were shown to coexist in the virus population of the infected plants ( Figure 5 ). Previous reports show that the efficiencies of the leaky UAG codon varied from 0.5% to 5% so that the ratio of modified to unmodified CP would be between 1:200 and 1:20 [12, 19] . However, in this study, relatively high levels of chimeric coat protein was observed ( Figure 5 ) giving a ratio of modified to unmodified CP of approximately 1:1. It has been suggested that muskmelon host plant could be producing higher levels of translation nonsense suppressor tRNA making the application of the translation read-through signal favorable in this host [7] .