Table 2. Frequency of pollen-mediated gene flow in common waterhemp from a field experiment conducted at South Central Agricultural Laboratory at the University of Nebraska-Lincoln in 2013.
| Distance from pollen source | Plants screened* | Plants with glyphosate-resistant trait | Pollen-mediated gene flow frequency† | Power‡, (1- β); α = 0.05 |
|---|---|---|---|---|
| m | # | # | ||
| 0.1 | 10,281 | 5,562 | 0.54 | >0.95 |
| 0.5 | 8,115 | 3,506 | 0.43 | >0.95 |
| 1 | 6,711 | 3,349 | 0.50 | >0.95 |
| 5 | 5,390 | 2,032 | 0.38 | >0.95 |
| 15 | 5,987 | 1,509 | 0.25 | >0.95 |
| 25 | 10,006 | 630 | 0.06 | >0.95 |
| 35 | 10,498 | 661 | 0.06 | >0.95 |
| 50 | 10,968 | 526 | 0.05 | >0.95 |
| Total | 67,956 | 17,775 |
*Total number of common waterhemp plants screened from all (eight) directions.
†Average pollen-mediated gene flow from all (eight) directions.
‡Value of power was calculated for a 95% confidence interval using binomial probabilities [equation (S2)].