Table S1. Genetic constructs used in this study Name TA29::BARNASE::NOS PTD::GUS::NOS En35S::GUS::E9 EnACT11::GUS::E9 EnACT2::GUS::E9 Other name 3PG 3SG 3A11G 3A2G Binary vector backbone Reference pTTM8 modified pBI101 pMON10547 pMON10547 pMON10547 Li et al. (2007) Sheppard et al. (2000) Perlak et al. (1993) Perlak et al. (1993) Perlak et al. (1993) Table S2. Primers used in Polymerase Chain Reaction (PCR) Name Sequence (5’ 3’) ACT2.001 ACT2.002 ACT11.001 ACT11.002 NPTII-F NPTII-R TA29-pro-F02 TA29-term-R03 V35F5 GUS003 atggtacctaggcaactatttttatgtatg aggatccagctgcaaacacacaaaaagag taggtaccgctagcaaatgtcaaatggaatgcatc gagaattctgtacatcctgtcaaaattgatataaa cttcttgacgagttcttc cgctgcctcgtcctg tcctcacactaagtccatgtttgc ggaaagtgaaattgaccgatcagag aggactattctggcttcctcttac ccagactgaatgcccacaggcc Size (bp) 1228 1405 340 656 880 Comment Reference Construction of ACT2 promoter Construction of ACT11 promoter Detection of KanR gene Detection of BARNASE gene Detection of GUS gene This study This study This study This study Skinner et al. (2003) Table S3. ANOVA table (one-way ANOVA) for the non-transgenic control trees that were distributed between the four transgenic constructs in the reporter trial for 2001 Name Construct Error Total Degrees of freedom 3 6 9 F-value 2.700 p-value 0.139 Table S4. ANOVA tables (one-way ANOVA) for the non-transgenic control trees that were distributed between the four transgenic constructs in the reporter trial for 2003 Name Construct Error Total Degrees of freedom 3 5 8 F-value 0.526 p-value 0.683 Table S5. ANOVA table (2-way ANOVA) with “Event” and “Block” as main effects for the sterility trial model Name Event Block Error Total Degrees of freedom 18 2 46 66 F-value 52 8822522 Pr(>F) <0.0001 <0.0001 Table S6. Dunnett’s test for the sterility trial Linear Hypotheses 1 - control == 0 2 - control == 0 3 - control == 0 4 - control == 0 5 - control == 0 6 - control == 0 7 - control == 0 8 - control == 0 9 - control == 0 10 - control == 0 11 - control == 0 12 - control == 0 13 - control == 0 14 - control == 0 15 - control == 0 16 - control == 0 17 - control == 0 18 - control == 0 Estimate -38.214 -36.771 -35.636 -29.152 -25.580 -24.984 -24.857 -22.705 -21.313 -20.932 -19.960 -19.490 -18.859 -17.734 -17.513 -17.216 -16.863 -12.241 Standard error 2.226 2.310 2.347 6.340 8.004 6.734 5.633 3.337 2.949 6.532 4.761 4.933 2.722 4.780 12.739 4.230 2.767 3.797 ***: P<0.001, **: P<0.01, and *: P<0.05 z value -17.167 -15.917 -15.182 -4.598 -3.196 -3.710 -4.412 -6.804 -7.227 -3.204 -4.192 -3.951 -6.929 -3.710 -1.375 -4.070 -6.094 -3.224 Pr(>|z|) < 0.001 < 0.001 < 0.001 < 0.001 0.020 0.003 < 0.001 < 0.001 < 0.001 0.020 < 0.001 0.001 < 0.001 0.003 0.900 < 0.001 < 0.001 0.018 Significance *** *** *** *** * ** *** *** *** * *** ** *** ** *** *** * Table S7. ANOVA table (one-way ANOVA) with “Construct” as main event for the reporter trial model for 2001 Name Construct Error Total Degrees of freedom 4 36 40 F-value 0.212 p-value 0.930 Table S8. ANOVA table (one-way ANOVA) with “Construct” as main event for the reporter trial model for 2003 Name Construct Error Total Degrees of freedom 4 36 40 F-value 0.263 p-value 0.900 Table S9. Dunnett’s test table for the reporter trial data from 2001 Linear Hypotheses 3A11G - control == 0 3A2G - control == 0 3PG - control == 0 3SG - control == 0 Estimate -3.583 -12.603 -41.193 0.556 Standard error 127.260 124.383 127.035 124.768 z value -0.028 -0.101 -0.324 0.004 Pr(>|z|) 1 0.999 0.935 1 Table S10. Dunnett’s test table for the reporter trial data from 2003 Linear Hypotheses 3A11G - control == 0 3A2G - control == 0 3PG - control == 0 3SG - control == 0 Estimate -1586.1 -3041.2 -4206.2 -593.9 Standard error 8020.9 8075.5 8054.7 8391.2 z value -0.198 -0.377 -0.522 -0.071 Pr(>|z|) 0.993 0.937 0.848 1 Table S11. ANOVA tables (one-way ANOVA) with “Event” as main effect for each construct in the reporter trial for 2001 3SG construct Name Degrees of freedom 9 Event 9 Error 18 Total 3PG construct Name Degrees of freedom 9 Event 11 Error 20 Total 3A2G construct Name Degrees of freedom 9 Event 10 Error 19 Total 3A11G construct Name Degrees of freedom 9 Event 10 Error 19 Total F-value 4.146 p-value 0.023 F-value 7.495 p-value 0.001 F-value 17.356 p-value 1e-04 F-value 4.026 p-value 0.020 Table S12. ANOVA tables (one-way ANOVA) with “Event” as main effect for each construct in the reporter trial for 2003 3SG construct Name Degrees of freedom 9 Event 8 Error 17 Total 3PG construct Name Degrees of freedom 9 Event 10 Error 19 Total 3A2G construct Name Degrees of freedom 9 Event 9 Error 18 Total 3A11G construct Name Degrees of freedom 9 Event 10 Error 19 Total F-value 15.816 p-value 3e-04 F-value 3.954 p-value 0.022 F-value 77.816 p-value <0.0001 F-value 3.464 p-value 0.033 Table S13. Dunnett’s test for the sterility trial data comparing catkin mean length of control to that of transgenic events for catkin collection from March 10, 2009 Linear Hypotheses Event 7 - control == 0 Event 9 - control == 0 Event 12 - control == 0 Event 14 - control == 0 Estimate -3.709 -3.662 -2.783 -4.047 Standard error 0.308 0.291 0.362 0.281 z value -12.059 -12.573 -7.682 -14.387 Pr(>|z|) < 2e-16 < 2e-16 1.58e-14 < 2e-16 Table S14. Dunnett’s test for the sterility trial data comparing catkin mean length of control to that of transgenic events for catkin collection from March 17, 2009 Linear Hypotheses Estimate Event 7 - control == 0 Event 9 - control == 0 Event 12 - control == 0 Event 14 - control == 0 Event 17 - control == 0 -2.341 -2.822 -3.079 -4.103 -5.257 Standard error 1.049 0.459 0.854 0.618 0.295 z value Pr(>|z|) -2.231 -6.152 -3.605 -6.636 -17.805 0.114 < 0.001 0.002 < 0.001 < 0.001 Table S15. Catkin angle per event Event 7 9 12 14 17 Average St. error Angle 72.83 90.89 77.83 130.26 83.28 91.02 10.26