Table 1. Cross-pollination rates (mean ± 1 standard error) of the eight pollen recipient lines (Bobwhite phytometer plants) and the four pollen-donor lines (background plants).

Non-GM recipient lines		GM recipient lines		Donor lines
S3b#1	1.43±0.08	Pm3b#1	6.56±0.83	Frisal	2.67±0.10
S3b#2	0.75±0.03	Pm3b#2	0.76±0.26	Casana	3.39±0.50
S3b#3	1.90±0.09	Pm3b#3	7.24±0.74	A9	6.16±0.41
S3b#4	0.50±0.02	Pm3b#4	8.52±0.76	A13	0.61±0.08
mean	0.55±0.06		5.77±0.65		3.21±0.27

Non-GM recipient control lines (S3b #1–4) had significantly lower cross-pollination rates than GM recipient lines (Pm3b#1–4). The GM line Pm3b#2 with highest transgene expression and lowest fertility had significantly lower cross-pollination rates than the other recipient GM lines. Frisal and Casana are non-GM wheat varieties; A9 and A13 are GM lines based on the variety Frisal. The GM line A9 pollinated significantly more phytometer plants than did GM line A13. Cross-pollination is defined as number of seeds derived from cross-pollination divided by number of all seeds×100.