Table 2.
Heat stress responding QTL at the seedling stage of wheat in the present study.
| Trait | Chr | Position (cM) | QTL for heat stress only1 | QTL for heat response2 | ||
|---|---|---|---|---|---|---|
| QTL Name | R2 (%) | QTL Name | R2 (%) | |||
| Leaf chlorophyll content | 2B | 27.2 | QLCCHS.nri-2B | 12.13 | QLCCHR.nri-2B | 6.80 |
| Leaf chlorophyll content | 2D | 22.46 | QLCCHR.nri-2D.1 | 5.80 | ||
| Leaf chlorophyll content | 2D | 70.65–85.97 | QLCCHS.nri-2D | 24.64 | QLCCHR.nri-2D.2 | 18.78 |
| Leaf chlorophyll content | 4A | 8.61 | QLCCHS.nri-4A | 5.82 | QLCCHR.nri-4A | 6.58 |
| Leaf chlorophyll content | 4B | 39.93–41.65 | QLCCHS.nri-4B.1 | 5.96 | QLCCHR.nri-4B.1 | 6.59 |
| Leaf chlorophyll content | 4B | 59.94 | QLCCHS.nri-4B.2 | 5.83 | ||
| Leaf chlorophyll content | 4B | 75.65 | QLCCHS.nri-4B.3 | 17.53 | QLCCHR.nri-4B.2 | 18.51 |
| Leaf chlorophyll content | 5B | 182.15–188.58 | QLCCHR.nri-5B | 24.85 | ||
| Shoot length (cm) | 3B | 9.7 | QSLHR.nri-3B.1 | 6.21 | ||
| Shoot length (cm) | 3B | 67.17 | QSLHR.nri-3B.2 | 5.64 | ||
| Shoot length (cm) | 7D | 26.92 | QSLHR.nri-7D | 12.55 | ||
| Shoot length (cm) | 2A | 150.11 | QLNHR.nri-2A.2 | 8.29 | ||
| Number of leaves per seedling | 3A | 111.62 | QLNHS.nri-3A | 6.22 | ||
| Number of leaves per seedling | 3A | 177.24 | QLNHR.nri-3A | 6.71 | ||
| Number of leaves per seedling | 3B | 65.72 | QLNHS.nri-3B | 5.91 | ||
| Number of leaves per seedling | 4B | 68.45–71.46 | QLNHR.nri-4B | 13.06 | ||
| Number of leaves per seedling | 5A | 114.97 | QLNHS.nri-5A | 6.12 | ||
| Number of leaves per seedling | 5B | 49.02 | QLNHR.nri-5B.1 | 12.88 | ||
| Number of leaves per seedling | 5B | 144.26 | QLNHR.nri-5B.2 | 5.93 | ||
| Number of leaves per seedling | 7B | 145.29 | QLNHR.nri-7B | 6.11 | ||
| Seedling recovery (%) | 2A | 95.75 | QSRHS.nri-2A | 32.98 | N/A | |
| Seedling recovery (%) | 2B | 19.16 | QSRHS.nri-2B | 6.48 | N/A | |
| Seedling recovery (%) | 2D | 26.05 | QSRHS.nri-2D | 18.55 | N/A | |
| Seedling recovery (%) | 3A | 123.05–128.87 | QSRHS.nri-3A | 12.33 | N/A | |
| Seedling recovery (%) | 7A | 42.08–43.47 | QSRHS.nri-7A | 13.41 | N/A | |
| Seedling recovery (%) | 7B | 89.82 | QSRHS.nri-7B | 23.35 | N/A | |
(1) QTL detected under heat stressed temperature but not at optimum temperature; (2) QTL detected using heat response, which is the trait relative difference between the two temperature treatments; QTL were declared significant based on unadjusted p-value <0.001; R2 is phenotypic variance explained by each QTL expressed as a percentage.