Table 2.
Two-way ANOVAs to test the effects of the 5-enolpyruvoylshikimate-3-phosphate synthase (epsps) transgene (fixed effect), four weedy rice (Oryza sativa f. spontanea) biotypes (random effect), and their interaction on fitness-related traits in F1 (a) and F2 (b) crop–weed (Oryza sativa f. spontanea and Oryza sativa) hybrids
| Trait | Transgene (T) | Weedy rice (W) | T × W | ||||||
|---|---|---|---|---|---|---|---|---|---|
| df | F | P | df | F | P | df | F | P | |
| (a) F1 generation of crop–weed hybrids | |||||||||
| Plant height (cm) | 1 | 0.06 | 0.816 | 3 | 0.29 | 0.828 | 3 | 2.38 | 0.077 |
| No. of tillers per plant | 1 | 27.84 | 0.011 | 3 | 24.85 | 0.016 | 3 | 4.85 | 0.009 |
| No. of panicles per plant | 1 | 19.03 | 0.022 | 3 | 23.17 | 0.014 | 3 | 5.53 | 0.005 |
| No. of seeds per plant | 1 | 47.61 | 0.006 | 3 | 2.60 | 0.226 | 3 | 4.58 | 0.011 |
| Seed set (%) | 1 | 9.04 | 0.057 | 3 | 0.26 | 0.852 | 3 | 1.99 | 0.143 |
| 1000-seed weight (g) | 1 | 1.86 | 0.266 | 3 | 11.02 | 0.040 | 3 | 0.80 | 0.505 |
| (b) F2 generation of crop–weed hybrids | |||||||||
| Plant height (cm) | 1 | 0.037 | 0.860 | 3 | 26.05 | 0.012 | 3 | 0.34 | 0.794 |
| No. of tillers per plant | 1 | 29.16 | 0.012 | 3 | 26.95 | 0.011 | 3 | 4.28 | 0.010 |
| No. of panicles per plant | 1 | 19.84 | 0.021 | 3 | 24.12 | 0.013 | 3 | 6.79 | 0.001 |
| No. of seeds per plant | 1 | 381.36 | 0.000 | 3 | 9.29 | 0.050 | 3 | 0.46 | 0.709 |
| Seed set (%) | 1 | 4.99 | 0.112 | 3 | 3.45 | 0.168 | 3 | 1.89 | 0.147 |
| 1000-seed weight (g) | 1 | 8.782 | 0.059 | 3 | 181.82 | 0.001 | 3 | 0.09 | 0.967 |
The transgene (T) had two levels (genetically engineered (GE) or non-GE) and weedy rice biotype (W) had four levels.