Table 1.
Statistical analysis of root-related traits in parents, F1, F2, and BC1P2 populations.
| Trait | Year | P1 | P2 | F1 | F2 | BC1P2 | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean ± SE | Mean ± SE | Mean ± SE | Mean ± SE | Range | CV% | Mean ± SE | Range | CV% | ||
| RD (cm) | 2018 | 6.4 ± 0.2 A | 1.5 ± 0.1 B | 6.3 ± 0.1 A | 4.6 ± 0.1 | 1.8–11.2 | 30.2 | − | − | − |
| 2019 | 7.0 ± 0.4 A | 1.9 ± 0.1 C | 4.8 ± 0.04 B | 4.6 ± 0.1 | 1.5–8.5 | 25.5 | 3.6 ± 0.1 | 1.6–6.0 | 24.7 | |
| RW (g) | 2018 | 330.0 ± 8.4 A | 23.8 ± 1.8 B | 303.3 ± 8.8 A | 137.5 ± 4.3 | 10.0–680.0 | 66.8 | − | − | − |
| 2019 | 316.0 ± 16.6 A | 30.8 ± 2.5 C | 198.0 ± 22.1 B | 220.7 ± 7.8 | 30.0–690.0 | 58.6 | 102.2 ± 3.5 | 10.0–340.0 | 53.3 | |
| RL (cm) | 2018 | 13.5 ± 0.5 A | 2.5 ± 0.2 C | 5.5 ± 0.8 B | 7.7 ± 0.1 | 3.1–17.2 | 24.5 | − | − | − |
| 2019 | 14.1 ± 1.5 A | 12.0 ± 0.6 A | 8.3 ± 0.5 B | 17.2 ± 0.3 | 3.0–25.0 | 24.5 | 18.6 ± 0.2 | 8.0–25.0 | 19.0 | |
RD, root diameter; RW, root weight; RL, root length. Different letters indicate a significant difference at p < 0.01 among means of P1, P2, and F1. SE, standard error. CV%: coefficients of variation (%). “−“: No data was shown.