Table 3.

Effects of moderate or high rates of four combinations of gene flow, including pollen-mediated gene flow (pmgf) and seed-mediated gene flow (smgf) on resistance evolution for landscapes with 20% non-Bt cotton refuges

a

Gene flow brought the years to resistance evolution below 20 and accelerated resistance evolution by more than 5 yr.

b

Resistance evolution was accelerated, but this effect was small or the time to resistance evolution remained >20 yr.

c

Effect on resistance was negligible or nonexistent.

d

Resistance evolution was slowed by gene flow.

Table 3.

Effects of moderate or high rates of four combinations of gene flow, including pollen-mediated gene flow (pmgf) and seed-mediated gene flow (smgf) on resistance evolution for landscapes with 20% non-Bt cotton refuges

a

Gene flow brought the years to resistance evolution below 20 and accelerated resistance evolution by more than 5 yr.

b

Resistance evolution was accelerated, but this effect was small or the time to resistance evolution remained >20 yr.

c

Effect on resistance was negligible or nonexistent.

d

Resistance evolution was slowed by gene flow.

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