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Table 1 Theoretical isolation distances derived from 1.0%, 0.1%, 0.01% and 0.001% cross-pollination

From: A case study of GM maize gene flow in South Africa

Percentage cross-pollination Mean BV06a(m) Mean BV07b(m) Mean WB07c(m) Comb Meand(m) High BV06e(m) High BV07f(m) High WB07g(m) Comb highh(m) Meani(90% CI)j(m) Meani(95% CI)k(m) Meani(99% CI)l(m)
1.0 9 14 16 14 28 34 40 36 20 19 17
0.1 33 42 50 45 122 129 141 135 125 119 110
0.01 114 126 159 145 530 491 494 503 792 759 694
0.001 398 377 501 473 2298 1861 1739 1869 5041 4861 4386
  1. aBainsvlei 2005/2006 (R2 = 0.90; y = -1.8422x + 1.7856); bBainsvlei 2006/2007 (R2 = 0.92; y = -2.0359x + 2.3363); cWaterbron 2006/2007 (R2 = 0.91; y = -2.1033x + 2.5423); dcombined mean cross-pollination across all trial sites (R2 = 0.95; y = -1.9509x + 2.2181); eBainsvlei 2005/2006 (R2 = 0.80; y = -1.5652x + 2.2691); fBainsvlei 2006/2007 (R2 = 0.92; y = -1.7271x + 2.6474); gWaterbron 2006/2007 (R2 = 0.91; y = -1.8318x + 2.9335);hcombined high cross-pollination across all trial sites (R2 = 0.97; y = -1.7547x + 2.7405); ithe datasets were combined and the means calculated with a 90%, 95% and 99% CI, respectively; jisolation distances derived from means from the combined dataset with a 90% CI (R2 = 0.92; y = -1.2445x + 1.6078); kisolation distances derived from means from the combined data with a 95% CI (R2 = 0.95; y = -1.2401x + 1.5719); lisolation distances derived from means from the combined data with a 99% CI (R2 = 0.96; y = -1.2493x + 1.55). Theoretical isolation distances (metres) are derived from 1.0%, 0.1%, 0.01% and 0.001% cross-pollination using logarithmic equations for mean cross-pollination and combined means over distance compared to high cross-pollination over distance for Bainsvlei 2005/2006 (BV06), Bainsvlei 2006/2007 (BV07) and Waterbron 2006/2007 (BV07) (P << 0.01). The theoretical isolation distances were also calculated after combining the data sets from means with a 90%, 95% and 99% confidence interval (CI), respectively.