TABLE 4.
Summary of the QTL analysis for yield (kg ha–1) and drought susceptibility index (DSI) evaluated in three environments (2014 and 2015 under full irrigation, and 2015 under terminal drought).
| Chromo-some | Position (cM) | Year1 | Treatment | LOD score | PVE2 |
Additive effect (kg ha–1) relative to SEA 5 |
Confidence interval |
Potentially overlapping QTLs3 | |||||
| PI 319441 | PI 417653 | PI 343950 | Marker | Position | (Mbp) | ||||||||
| 1 | 45 | 2015 | Well-watered | 3.8 | 1.8 | –8.3 | –135.5 | –36.5 | ss715641107 | ss715647281 | 36.46 | 38.63 | |
| 1 | 72 | 2015 | Drought | 4.6 | 1.0 | 99.4 | 0.0 | 111.0 | ss715646589 | ss715645924 | 48.52 | 48.90 | Trapp et al. (2016) |
| 1 | 76 | 2015 | Well-watered | 5.7 | 4.6 | 54.3 | 190.3 | –59.7 | ss715645914 | ss715645869 | 48.99 | 49.48 | |
| 1 | 81 | 2015 | Drought | 6.0 | 4.8 | –47.0 | 277.4 | –7.4 | ss715645252 | ss715645251 | 50.22 | 50.30 | |
| 3 | 72 | Mean | 6.1 | 3.5 | 87.2 | 0.0 | 62.4 | ss715639323 | ss715639320 | 47.53 | 47.95 | ||
| 3 | 72 | 2015 | Well-watered | 5.2 | 1.7 | 105.2 | 0.0 | 96.0 | ss715639323 | ss715639320 | 47.53 | 47.95 | |
| 4 | 33 | Mean | 4.8 | 1.9 | –51.0 | –44.5 | –61.1 | ss715650237 | ss715639357 | 7.97 | 9.30 | Blair et al. (2006) | |
| 4 | 33 | 2014 | Well-watered | 3.9 | 3.5 | –85.1 | –62.3 | –56.6 | ss715650237 | ss715639357 | 7.97 | 9.30 | |
| 5 | 68 | 2015 | Well-watered | 4.5 | 1.3 | –105.4 | –60.4 | –65.7 | ss715645447 | ss715645308 | 38.52 | 38.72 | Trapp et al. (2016) |
| 7 | 55 | 2015 | Well-watered | 8.0 | 2.6 | –46.3 | –12.7 | –164.8 | ss715640487 | ss715647648 | 39.30 | 39.94 | Hoyos-Villegas et al. (2016) |
| 8 | 54 | Mean | 7.6 | 5.4 | –75.4 | –110.0 | –73.5 | ss715649162 | ss715649744 | 48.44 | 48.51 | ||
| 8 | 54 | 2014 | Well-watered | 4.6 | 4.7 | –19.7 | –96.7 | –81.6 | ss715649162 | ss715649744 | 48.44 | 48.51 | |
| 8 | 78 | 2015 | Drought | 6.7 | 2.4 | 111.0 | 198.6 | 118.7 | ss715646502 | ss715646515 | 57.32 | 57.55 | |
| 8 | 87 | 2015 | Drought | 7.9 | 1.9 | –33.2 | 115.2 | –123.3 | ss715646762 | ss715646767 | 58.78 | 58.94 | |
| 9 | 33 | 2015 | DSI | 20.9 | 38.0 | 0.6 | 0.0 | 0.4 | ss715645146 | ss715639258 | 23.96 | 25.49 | Mukeshimana et al. (2014), Berny Mier y Teran et al. (2019b) |
| 9 | 33 | Mean | 6.1 | 3.2 | –65.5 | 0.0 | –80.1 | ss715645146 | ss715639258 | 23.96 | 25.49 | ||
| 9 | 33 | 2014 | Well-watered | 4.1 | 4.1 | –68.8 | 0.0 | –90.9 | ss715645146 | ss715639258 | 23.96 | 25.49 | |
| 10 | 46 | Mean | 5.1 | 2.8 | 17.2 | –52.5 | –71.1 | ss715645524 | ss715645496 | 41.21 | 42.15 | Hoyos-Villegas et al. (2016) | |
| 10 | 46 | 2015 | Well-watered | 3.6 | 3.2 | 116.4 | –46.7 | –102.0 | ss715645524 | ss715645496 | 41.21 | 42.15 | |
| 10 | 46 | 2015 | Drought | 3.8 | 0.6 | 10.0 | –25.6 | –100.5 | ss715645524 | ss715645496 | 41.21 | 42.15 | |
1Mean: average of the three treatments. 2Percentage of variation explained. 3For further explanations, see the section “Discussion.”