TABLE 2.
Drought stress responding QTL at the seedling stage of wheat in the present study.
| Trait | Drought Trait | QTL | Representative SNP | Chr | Position (cM) | R2 (%) |
| Leaf chlorophyll content (SPAD) | Drought stress | QLCCDS.nri-1B | IWB26948 | 1B | 76–77 | 6.05 |
| QLCCDS.nri-2A | IWB11193 | 2A | 124 | 6.81 | ||
| QLCCDS.nri-2B | IWB12155 | 2B | 129 | 6.32 | ||
| QLCCDS.nri-6B.1 | IWB8110 | 6B | 80 | 6.41 | ||
| QLCCDS.nri-6B.2 | IWA5606 | 6B | 110 | 6.85 | ||
| Drought stress response | QLCCDR.nri-2B | IWB53473 | 2B | 69 | 7.28 | |
| QLCCDR.nri-3B | IWB10755 | 3B | 66 | 6.38 | ||
| QLCCDR.nri-7B.1 | IWB26212 | 7B | 49 | 6.16 | ||
| QLCCDR.nri-7B.2 | IWB1369 | 7B | 59 | 6.40 | ||
| Leaf chlorophyll fluorescence (Fv/Fm) | Drought stress | QLCFDS.nri-1B | IWB38151 | 1B | 80 | 7.06 |
| QLCFDS.nri-3A | IWB60417 | 3A | 24–26 | 6.63 | ||
| QLCFDS.nri-3D | IWB58554 | 3D | 86 | 6.13 | ||
| QLCFDS.nri-5A | IWA3705 | 5A | 99 | 6.50 | ||
| Shoot length (cm) | Drought stress | QSLDS.nri-2B | IWB58206 | 2B | 153 | 4.77 |
| QSLDS.nri-3A | IWB49895 | 3A | 68 | 4.62 | ||
| QSLDS.nri-4B.1 | IWA1768 | 4B | 30–33 | 5.25 | ||
| Drought stress response | QSLDR.nri-2B | IWB29525 | 2B | 107 | 5.99 | |
| QSLDR.nri-3B | IWB26799 | 3B | 62–63 | 6.00 | ||
| QSLDR.nri-5B | IWB73678 | 5B | 129 | 6.83 | ||
| QSLDR.nri-7B | IWB73494 | 7B | 71–73 | 7.08 | ||
| Number of leaves per seedling | Drought stress | QLNDS.nri-2B | IWB2982 | 2B | 109 | 5.78 |
| QLNDS.nri-5A | IWB4229 | 5A | 58 | 7.60 | ||
| Drought stress response | QLNDR.nri-6B | IWB72198 | 6B | 83 | 7.40 | |
| Seedling recovery | Drought stress | QSRDS.nri-1B | IWA4680 | 1B | 78–79 | 6.40 |
| QSRDS.nri-2B | IWB26011 | 2B | 130 | 5.97 | ||
| QSRDS.nri-2D | IWA4789 | 2D | 56 | 6.42 | ||
| QSRDS.nri-5A | IWB64901 | 5A | 51 | 6.71 | ||
| QSRDS.nri-6B | IWB29386 | 6B | 82 | 5.66 |
Drought stress, QTL detected under drought stress but not at optimum water condition; drought stress response, QTL associated with drought response, which is the trait relative difference between the two water regimes. QTL were declared significant based on unadjusted p-value < 0.001. R2 is phenotypic variance explained by each QTL expressed as a percentage.