Table 5.
Yield-related traits of the four genotypes of the F2:3, F3:4, and F4:5 lines.
| Progeny | Genotype/ variety | Spike length (cm) | Spikelet spike-1 | Number of efficient spikes plant-1 | Grain No. spike-1 | Thousand kernel weight (g) | Plant yield∗ (g) | Plant biomass∗ (g) | Harvest index |
|---|---|---|---|---|---|---|---|---|---|
| F2:3 | RRPP | 9.9 ± 0.4c | 19.0 ± 0.5b | 8.5 ± 3.1a | 44.0 ± 3.9b | 41.6 ± 2.7b | 14.3 ± 1.9a | 34.2 ± 3.7c | 0.42 ± 0.04a |
| 2014–2015 | RRpp | 11.2 ± 0.7b | 19.6 ± 0.8a | 8.0 ± 3.0a | 46.1 ± 3.2a | 37.3 ± 2.7c | 13.0 ± 1.9b | 36.0 ± 4.3c | 0.36 ± 0.03c |
| rrPP | 10.8 ± 0.6b | 19.0 ± 1.0b | 6.6 ± 2.2b | 39.5 ± 3.3d | 45.4 ± 2.9a | 15.1 ± 3.0a | 40.2 ± 4.2b | 0.38 ± 0.03b | |
| rrpp | 12.4 ± 1.0a | 20.0 ± 1.0a | 7.0 ± 2.4b | 42.2 ± 3.5c | 42.2 ± 3.3b | 14.6 ± 3.0a | 42.5 ± 5.6a | 0.34 ± 0.03c | |
| Karcagi | 12.3 ± 1.1 | 20.0 ± 1.2 | 9.9 ± 2.4 | 49.6 ± 4.2 | 34.1 ± 2.8 | 12.3 ± 1.8 | 33.9 ± 4.8 | 0.36 ± 0.04 | |
| Jinmai47 | 9.9 ± 0.3 | 20.5 ± 0.6 | 6.2 ± 1.8 | 46.8 ± 4.2 | 46.2 ± 3.0 | 15.7 ± 1.9 | 41.7 ± 4.5 | 0.39 ± 0.03 | |
| F3:4 | RRPP | 9.7 ± 0.5d | 18.5 ± 1.0c | 6.3 ± 2.2a | 40.3 ± 3.5b | 40.2 ± 3.3b | 13.8 ± 1.2a | 35.0 ± 3.6d | 0.39 ± 0.02a |
| 2015–2016 | RRpp | 11.5 ± 1.0b | 19.5 ± 1.0b | 6.6 ± 1.8a | 42.6 ± 4.1a | 34.5 ± 3.6c | 11.4 ± 1.6b | 38.6 ± 3.3c | 0.30 ± 0.03c |
| rrPP | 10.6 ± 0.6c | 18.6 ± 0.5c | 5.4 ± 1.0b | 38.7 ± 3.8c | 44.3 ± 4.1a | 15.4 ± 2.1a | 41.3 ± 3.8a | 0.37 ± 0.03b | |
| rrpp | 12.7 ± 0.4a | 20.6 ± 0.7a | 5.1 ± 2.0b | 39.6 ± 2.6c | 40.6 ± 3.4b | 14.0 ± 1.7a | 43.6 ± 4.0a | 0.32 ± 0.03c | |
| Karcagi | 12.6 ± 0.3 | 19.0 ± 1.0 | 10.0 ± 3.2 | 51.0 ± 5.2 | 33.7 ± 3.8 | 10.9 ± 2.0 | 35.8 ± 4.4 | 0.30 ± 0.03 | |
| Jinmai47 | 11.2 ± 0.5 | 20.3 ± 0.6 | 7.0 ± 1.5 | 49.3 ± 3.9 | 48.4 ± 4.0 | 15.2 ± 2.5 | 38.1 ± 3.2 | 0.41 ± 0.03 | |
| F4:5 | RRPP | 10.0 ± 0.4d | 19.5 ± 0.5b | 8.0 ± 2.8a | 43.0 ± 5.1b | 43.5 ± 2.7c | 15.0 ± 2.0a | 36.5 ± 2.5d | 0.41 ± 0.03a |
| 2016–2017 | RRpp | 11.0 ± 0.6b | 20.0 ± 0.7a | 7.7 ± 2.5a | 45.0 ± 5.0a | 35.5 ± 3.2d | 12.7 ± 1.7c | 39.6 ± 3.4c | 0.32 ± 0.02c |
| rrPP | 10.6 ± 0.7c | 19.0 ± 1.1b | 6.6 ± 2.3b | 39.0 ± 4.7d | 48.3 ± 3.6a | 16.0 ± 1.3a | 42.5 ± 3.8b | 0.38 ± 0.03b | |
| rrpp | 11.9 ± 0.5a | 20.5 ± 0.8a | 6.2 ± 2.2b | 41.3 ± 4.3c | 45.1 ± 4.1b | 14.4 ± 2.3b | 45.6 ± 4.4a | 0.32 ± 0.03c | |
| Karcagi | 13.0 ± 1.0 | 21.0 ± 0.6 | 9.0 ± 2.4 | 50.2 ± 4.1 | 36.2 ± 3.3 | 11.5 ± 1.8 | 34.0 ± 3.6 | 0.34 ± 0.02 | |
| Jinmai47 | 10.1 ± 0.2 | 21.5 ± 0.8 | 6.6 ± 1.6 | 47.0 ± 4.3 | 50.5 ± 4.4 | 16.0 ± 2.0 | 41.0 ± 3.3 | 0.41 ± 0.04 |
∗These data are the mean values of 20–45 plants. All data are mean ± SD of each genotype. Different letters (“a,” “b,” “c,” and “d”) within the same column represent differences significant at P < 0.05; parents were not included.