Table 5. Frequency of flax gene flow from 0.1–45 m distance from the pollen source at ElRS in 2007.

Mean distancea (m)	Seeds screenedb	Seeds with high ALA	Actual frequency of gene flow in sample	Ho frequency of gene flow p(x)	Power, (1−β); α = 0.05%c
0.1	9600	179	0.018646	0.01	0.95
0.5	9600	70	0.007292	0.01	0.95
1.3	9600	33	0.003438	0.01	0.95
2.5	9600	22	0.002292	0.001	0.85
4	100 800	27	0.000268	0.001	0.95
7	76 800	11	0.000143	0.001	0.95
15	91 200	13	0.000143	0.001	0.95
25	176 800	0	0	0.0005	0.95
35	476 800	17	0.000028	0.00001	0.85
45	170 000	0	0	0.00005	0.95

Abbreviations: ALA, α-linolenic acid; ElRS, Ellerslie Research Station.

Frequency of gene flow was calculated from the number of seeds screened and the number of high ALA seeds. To determine gene flow significance, the null hypothesis frequency, based on the sample size and power, was compared with the sample frequency.

^aMean distance from the pollen source was used in analysis for all observations.

^bTotal number of seeds screened from all (eight) blocks for a specific distance from the pollen source.

^cValue of power (1−β) was calculated for 95% confidence interval (α=5%) using equation (1) (see text) and Table 1.