Fig. 3From: Effect of herbivore stress on transgene behaviour in maize crosses with different genetic backgrounds: cry1Ab transgene transcription, insecticidal protein expression and bioactivity against insect pestsMean relative transgene expression in damaged and undamaged plants of different genetic backgrounds from South Africa. The values reported are in relative units. The feeding damage was induced by S. littoralis larvae. Vertical bars show mean values, and the standard errors (± SE) are indicated as lines. Letters above the bars represent results from the means separation Duncan’s testBack to article page