Table 1.
Heterosis analysis of hybrids generated by crossing of T449 and neo-tetraploid (H1) rice lines
| Traits | T449 | H1 | F1 | MPH (%) | HPH (%) |
|---|---|---|---|---|---|
| PH (cm) | 87.40 ± 3.91 | 102.50 ± 3.09 | 116.44 ± 3.74 | 22.63 | 13.60 |
| EP | 4.40 ± 0.55 | 7.60 ± 1.34 | 6.60 ± 1.34 | 10.00 | −13.16 |
| GL (cm) | 8.07 ± 0.11 | 8.92 ± 0.12 | 8.80 ± 0.16 | 3.59 | −1.35 |
| GW (cm) | 2.71 ± 0.15 | 3.23 ± 0.05 | 3.10 ± 0.09 | 4.38 | −4.02 |
| TGW (g) | 30.20 ± 0.89 | 36.85 ± 0.56 | 36.15 ± 0.41 | 7.83 | −1.90 |
| FGP | 127.00 ± 31.89 | 421.20 ± 49.26 | 757.00 ± 166 | 176.18 | 79.72 |
| TGP | 612.00 ± 100.21 | 614.60 ± 134.33 | 907.80 ± 179.58 | 48.02 | 47.71 |
| GYP (g) | 3.83 ± 0.93 | 15.53 ± 1.90 | 27.32 ± 5.79 | 182.36 | 75.98 |
| SS (%) | 20.55 ± 2.63 | 69.75 ± 7.79 | 83.12 ± 2.83 | 84.10 | 19.17 |
| PF (%) | 35.10 ± 6.28 | 77.95 ± 2.26 | 77.01 ± 0.47 | 36.24 | −1.21 |
Note: Fifteen plants were selected for traits investigations; HPH: High-parent heterosis; MPH: Mid-parent heterosis. PH: Plant height; EP: Effective number of panicles per plant; GL: Grain length; GW: Grain width; TGW: 1000-grain weight; FGP: Filled grains per plant; TGP: Total grains per plant; GYP: Grain yield per plant; SS: Seed setting; PF: Pollen fertility; ±: represents standard deviation