Effect of the expected proportion of pollen received from transgenic plants (PPR) on the total number of filled seeds produced by weedy B. rapa in mixed populations including transgenic B. napus crop and crop-weed hybrids.

A. Mean seed production for the transgenic type treatments. B. The influence of PPR. “Slopes” are the coefficients for the effect of each trait on seed production. The “overall” slope indicates the effect across all transgenic types. The within-type slopes were obtained from the mixed linera model presented in Table 5, they indicate the relationships for crop, F1 and backcross plants. Coefficients that do not include zero in their 95% confidence interval are in shown in bold typeface.