In order to evaluate the level of insect resistance in the trans-genic pea plants, insect feeding tests were conducted using one
of the target pests, tobacco budworm. The result showed a clear
difference between transgenic and control plants in term of
damage and larval mortality. The observed feeding damage was
negligible on transgenic plants while the control plants were to-tally damaged by the inoculated larvae (Fig. 7). Larval survival
was also highly impaired on the transgenic plants where most of
the larvae (73–85% in the first experiment and 53–78% in the
second experiment) died within 2–3 days after inoculation on the
transgenic plants which was not the case on the non-transgenic
control plants (Fig. 8). 5–7 days after inoculation, none of the larva
survived on transgenic plants whereas about 85% of the larvae sur-vived on the non-transgenic control plants