Table 1. Mean grain yield and standard heterosis of 17 ILHs evaluated in the year 2008.
| Hybrid ID | Cross | Grain yield (t/ha) | Percent heterosis over respective check hybrids |
| ILH299 | PMS17A/IL299 [Pusa44/O. rufipogon IRGC100219//2*Pusa44] | 7.691 | 37.1** |
| ILH326 | PMS17A/IL326 [Pusa44/O. rufipogon IRGC100219//2*Pusa44] | 7.595 | 35.4** |
| ILH411 | PMS17A/IL411 [Pusa44/O. nivara (CR100113A//2*Pusa44] | 7.637 | 36.2** |
| ILH435 | PMS17A/IL435 [Pusa44/O. nivara (CR100142A//2*Pusa44] | 7.829 | 39.6** |
| ILH867 | PMS17A/IL867 [PR114/O. rufipogon IRGC104433//2*PR114] | 8.906 | 44.3** |
| ILH873 | PMS17A/IL873 [PR114/O. rufipogon IRGC104433//2*PR114] | 7.254 | 26.2* |
| ILH984 | PMS17A/IL894 [PR114/O. rufipogon IRGC104433//2*PR114] | 7.375 | 19.5 |
| ILH896 | PMS17A/IL896 [PR114/O. rufipogon IRGC104433//2*PR114] | 7.702 | 24.8* |
| ILH900 | PMS17A/IL900 [PR114/O. rufipogon IRGC104433//2*PR114] | 7.568 | 22.6* |
| ILH901 | PMS17A/IL901 [PR114/O. rufipogon IRGC104433//2*PR114] | 8.102 | 32.6** |
| ILH921 | PMS17A/IL921 [PR114/O. nivara IRGC100593//2*PR114] | 8.097 | 31.2** |
| ILH924 | PMS17A/IL924 [PR114/O. nivara IRGC105695//2*PR114] | 7.377 | 19.5 |
| ILH929 | PMS17A/IL929 [PR114/O. nivara IRGC100114//2*PR114] | 7.977 | 29.2** |
| ILH951 | PMS17A/IL951 [PR114/O. nivara (CR100142A//2*PR114] | 7.810 | 19.1 |
| ILH1011 | PMS17A/IL1011 [PR114/O. nivara (CR100140//2*PR114] | 8.391 | 35.9** |
| ILH1459 | PMS17A/IL1459 [PR114/O. glumaepatula (IR104387//2*PR114] | 8.034 | 36.96** |
| ILH1433 | PMS17A/IL1433 [PR114/O. longistaminata (IR104301B//2*PR114] | 7.558 | 23.35* |
| Check Hybrid 1 | PMS17A/Pusa44 | 5.627 | - |
| Check Hybrid 2 | PMS17A/PR114 | 6.127 | - |
*, **significant at P≤0.05 and P≤0.01, respectively. IRGC and CR refer to International Rice Germplasm Centre and CRRI Cuttack, accession numbers, respectively.