Table 1. Agronomic traits of neo-tetraploid rice lines and their autotetraploid parents.
| Traits/Names | T44 | T45 | H3 | 66 | 134 |
|---|---|---|---|---|---|
| Plant height (cm) | 82.7±6.03 | 99±5.31 | 101.8±2.1 | 114±10.8 | 151.8±11.3 |
| Number of panicles | 3.2±0.84 | 3.4±0.55 | 3.8±0.8 | 4±0.71 | 2.8±0.84 |
| Panicle length (cm) | 31.4±1.95 | 33±3.2 | 25.5±1.2 | 23.8±2.16 | 29.5±1.87 |
| Number of Grains per plant | 383.4±42.8 | 385.6±78.8 | 392.6±47.5 | 330.2±49.3 | 413.6±69.2 |
| Number of filled Grains per plant | 120.2±47.8 | 96.2±20.4 | 268.2±32.1 | 222.4±30.2 | 295.6±49.1 |
| 1000- grain weight (g) | 25.1±0.97 | 25.3±1.54 | 31.5±1.9 | 29.2±2.3 | 33.2±1.3 |
| Seed setting (%) | 31.5±12.3 | 25.4±5.1 | 68.3±2.6 | 68.1±2.1 | 71.8±6.5 |
| Pollen fertility (%) | 65.80 | 76.75 | 94.29 | 92.29 | 93.86 |
| Embryo sac fertility (%) | 89.44 | 88.62 | 88.78 | 90.36 | 90.61 |
Note: 134, 66 and H3 represent neo-tetraploid rice lines, including Huaduo 4, Huaduo 5 and Huaduo 3, respectively; T44 and T45 represent autotetraploid rice parents, including Jackson-4x and 96025, respectively.