Table 1.
Phenotypic performance of parents and 154 recombinant inbred lines
| Traits | Parental lines | RILs | |||||
|---|---|---|---|---|---|---|---|
| IR64 mean | Cabacu mean | IR64 versus Cabacua | Mean | Range | CVb | H (%)c | |
| Leaf rolling score (LRS) | 2.2 | 0.6 | ** | 2.7 | 0.0–8.0 | 27.7 | 92.0 |
| Root pulling force (RPF) | 11.4 | 19.0 | ** | 17.4 | 6.0–31.8 | 36.7 | 41.5 |
| Grain yield per plant (GY) | 17.5 | 16.0 | ns | 9.1 | 1.4–24.3 | 44.2 | 64.1 |
| Panicles per plant (PPL) | 18.7 | 11.5 | ** | 13.2 | 5.3–34.8 | 30.1 | 63.7 |
| Spikelets per panicle (SPP) | 82.5 | 103.3 | ** | 84.7 | 37.9–165.4 | 21.8 | 59.0 |
| Grains per panicle (GPP) | 66.6 | 88.6 | ** | 51.9 | 5.8–146.7 | 38.5 | 64.1 |
| Percent seed set (PSS) | 85.1 | 88.8 | ns | 61.3 | 9.0–91.8 | 28.0 | 73.1 |
| 100-grain weight (GW) | 2.2 | 3.1 | ** | 2.2 | 1.5–3.1 | 15.1 | 53.3 |
| Days to heading (DTH) | 99.0 | 109.0 | ** | 97.0 | 82.0–114.0 | 4.0 | 83.5 |
| Plant height (PH) | 65.5 | 97.6 | ** | 77.1 | 45.6–132.5 | 8.5 | 92.8 |
ns not significant
** Significant at P < 0.01
aDifference between two parents
bCoefficient of variation
cH2 estimates calculated on a family mean basis