Table 1 Description of the genotype pairs selected for this study with similar shoot biomass and time to flowering but contrasting harvest index
Pair | Genotype | IRGC # | HI class | Description/reference |
|---|---|---|---|---|
1 | Jabor Sail | 66,831 | High | Aus; identified for high grain yield under drought (Torres et al. 2013) |
1 | Tchampa | 32,362 | Low | Aus |
2 | Dular | 117,266 | High | Aus; previously noted for deep root growth, low canopy temperature, and high drought response index (Henry et al. 2011) |
2 | Santhi Sufaid 207 | 28,212 | Low | Aus |
3 | Camponi Sml | 50,640 | High | Indica |
3 | Gul Murali | 66,792 | Low | Indica |
4 | ARC 10,955 | 12,683 | High | Aus; high yield under drought and high deep root dry weight (Liao et al. 2022) |
4 | Soloi | 37,598 | Low | Aus |
5 | E Zi 124 | 70,215 | Low | Indica |
5 | Wanni Dahanala | 15,721 | High | Indica |
6 | Aus 257 | 29,049 | High | Aus; high yield under drought and well-watered conditions (Liao et al. 2022) |
6 | DZ78 | 117,610 | Low | Aus |
7 | IR64 | Â | Low | Indica; previously a mega-variety in Asia, drought susceptible (Mackill and Khush 2018) |
7 | IR74371-70-1-1 | Â | High | Indica; released as Sahbhagi dhan in India, BRRI dhan 56 in Bangladesh, Sukha dhan 3 in Nepal; exhibited consistently high harvest index under drought (Anantha et al. 2016) |