Table 1.
Measurement of reproductive traits of different G73N genotypes from the 9425 and WT B. scoparia line
| Fitness measurement | Timing | Genotype † | ||||
|---|---|---|---|---|---|---|
| 9425‐RR | 9425‐RS | 9425‐SS | WT | ANOVA ‡ | ||
| Flowering time (d) | Exp‐1 | 37.8 ± 0.8 (a § ) | 40.3 ± 0.9 (b) | 42.3 ± 0.7 (b) | 46.6 ± 0.7 (c) | <0.0001 |
| Exp‐2 | 41.6 ± 0.6 (a) | 41.7 ± 0.5 (a) | 41.1 ± 0.4 (a) | 42.1 ± 0.5 (a) | 0.6164 | |
| Seed maturation time (d) | Exp‐1 | 54.4 ± 0.9 (a) | 54.1 ± 1.0 (a) | 54.6 ± 1.0 (a) | 46.7 ± 0.8 (b) | <0.0001 |
| Exp‐2 | 45.3 ± 0.5 (a) | 48.9 ± 1.7 (b) | 45.6 ± 1.1 (ab) | 43.5 ± 1.3 (a) | 0.0345 | |
| Biomass (g) | Exp‐1 | 33.1 ± 1.2 (a) | 44.2 ± 1.3 (b) | 46.7 ± 1.9 (b) | 58.8 ± 1.9 (c) | <0.0001 |
| Exp‐2 | 26.8 ± 0.8 (a) | 28.7 ± 1.3 (a) | 34.6 ± 1.1 (b) | 25.9 ± 2.5 (a) | 0.0021 | |
| Seed production (g) | Exp‐1 | 13.2 ± 0.7 (ab) | 15.2 ± 1.0 (a) | 12.8 ± 0.8 (b) | 14.4 ± 0.7 (ab) | 0.1426 |
| Exp‐2 | 5.7 ± 0.5 (ab) | 5.6 ± 0.5 (b) | 7.5 ± 0.7 (a) | 5.3 ± 0.7 (b) | 0.0694 | |
| Harvest index (%) | Exp‐1 | 39.8 ± 1.6 (a) | 34.2 ± 1.8 (b) | 28.0 ± 2.0 (c) | 24.8 ± 1.5 (c) | <0.0001 |
| Exp‐2 | 21.2 ± 1.5 (a) | 20.0 ± 2.4 (a) | 21.8 ± 2.1 (a) | 20.3 ± 1.4 (a) | 0.9103 | |
| F1 germination rate (%) | Exp‐1 | 89.3 ± 3.1 (a) | 92.1 ± 3.0 (a) | 88.0 ± 3.9 (a) | 87.0 ± 4.3 (a) | 0.7776 |
| Exp‐2 | 100.0 ± 0.0 (a) | 99.4 ± 0.6 (ab) | 96.3 ± 2.2 (b) | 98.8 ± 0.9 (ab) | 0.0157 | |
| Outcrossing rates (%) | Exp‐1 | 33.3 ± 13.9 (a) | — | 8.3 ± 5.5 (a) | 14.3 ± 9.2 (a) | 0.1893 |
| Exp‐2 | 36.1 ± 11.7 (a) | — | 18.8 ± 12.0 (a) | 10.0 ± 6.1 (a) | 0.2114 | |
†
RR, RS, SS stand for homozygous‐, heterozygous‐resistant and susceptible plants (with or without the dicamba resistance endowing mutation G73N), respectively.
‡
P‐values for ANOVA for the effects of genotype on different fitness traits are listed in the far‐right column.
§
Different letters represent significant difference among the means at p = 0.05 level.