Table 1.
Stagnant flooding conditions, number of entries, number of best genotypes and their percentage survival range during the 2007–09 trials at IRRI, Los Baños, Philippines. Gradual flooding started at 30 DAT with a 20-cm water depth and a weekly increase of 5 cm until reaching 50–60 cm. Severe flooding started at 30 DAT with a 20-cm water depth, followed by 40 cm at 37 DAT and 50–60 cm at 42 DAT. Water depth was then maintained through maturity in all treatments. DS, dry season (January to May); WS, wet season (July to November).
| Year and season |
SF treatment | No. of landraces | No. of breeding lines | No. of checks | Total no. of entries | No. of best genotypes and survival range (%) | |
|---|---|---|---|---|---|---|---|
| 2007 | DS | Gradual | 204 | 26 | 2 | 232 | 55 (90–100) |
| WS | Severe | 133 | 88 | 2 | 223 | 25 (61–89) | |
| 2008 | DS | Severe | 86 | 26 | 2 | 114 | 10 (40–66) |
| WS | Severe | 84 | 26 | 2 | 112 | 10 (51–73) | |
| 2009 | DS | Severe | 15 | 15 | 2 | 32 | 17 (64–100) |
| WS | Severe | 15 | 15 | 2 | 32 | 17 (55–96) | |