Table 2.
QTLs detected for water stress tolerance related traits based on composite interval mapping in selected extreme plants of the F2 population derived from the cross Super Basmati/IR55419-04
| Trait name | QTL name | Position | Ch. number | Marker interval | LOD value | R2 (%) | Additive effect |
|---|---|---|---|---|---|---|---|
| Plant height | qHt1 | 164.2 | 1 | RM212-RM265 | 3.6 | 19.5 | −5.6 |
| qHt6 | 66.01 | 6 | RM587-RM510 | 5.3 | 25.0 | −7.6 | |
| Tillers per plant | qTill11 | 69.2 | 11 | RM202-RM229 | 4.0 | 19.5 | 3.1 |
| Culm length | qCmL2 | 34.0 | 2 | RM110-RM174 | 4.7 | 29.5 | −0.3 |
| Leaf dry weight | qLDW3 | 246.3 | 3 | RM520-RM143 | 3.8 | 34.0 | 0.4 |
| Stem dry weight | qSDW3 | 244.3 | 3 | RM520-RM143 | 10.7 | 7.5 | −2.4 |
| Total shoot dry weight | qTSDW3 | 238.3 | 3 | RM520-RM143 | 11.7 | 6.9 | −4.7 |
| Leaf drying score | qLDS3 | 234.3 | 3 | RM520-RM143 | 5.3 | 4.5 | 0.7 |
| qLDS4 | 109.5 | 4 | RM451-RM559 | 4.8 | 12.5 | 2.2 | |
| Total water uptake | qTWU3 | 238.3 | 3 | RM520-RM143 | 27.0 | 9.96 | −299.150 |
| qTWU4 | 4.4 | 4 | RM119-RM518 | 5.6 | 2.45 | −236.494 | |
| Leaf area | qLA3 | 234.3 | 3 | RM168-RM520 | 9.7 | 17.12 | 207.195 |
| Total root dry weight | qTRDW3 | 236.3 | 3 | RM168-RM520 | 8.3 | 20.901 | −0.778 |
| Deep root length | qDRL3 | 226.3 | 3 | RM168-RM520 | 7.2 | 29.51 | −0.010 |
| qDRL9 | 50.0 | 9 | RM105-RM410 | 3.5 | 9.114 | −0.080 | |
| qDRL11 | 56.0 | 11 | RM202-RM229 | 3.3 | 3.857 | −0.100 | |
| Deep root volume | qDRV3 | 232.3 | 3 | RM168-RM520 | 6.7 | 25.784 | −1.829 |
| Deep root surface area | qDRSA3.1 | 136.7 | 3 | RM16030-RM168 | 4.1 | 13.624 | 48.625 |
| qDRSA3.2 | 228.3 | 3 | RM168-RM520 | 7.7 | 32.096 | −220.250 | |
| Deep root diameter | qDRD3.1 | 136.8 | 3 | RM16030-RM168 | 4.7 | 18.346 | 0.082 |
| qDRD3.2 | 242.3 | 3 | RM168-RM520 | 5.2 | 25.430 | −0.292 |