Table 2.
Details of meta-QTLs (MQTLs) for drought tolerance identified in present study
| Meta-QTL* (chromosome, genetic position in cM/physical position in Mb, CI (95%) in cM) | No. of QTLs with minimum and average CI (cM) | Mean R2 % (range of R2 %) | Markers flanking MQTL |
|---|---|---|---|
| MQTL1 (1D, 36.3/-, 7.39) | 2/9.10 (9.60) | 6.79 (6.47–7.12) | XKsuE18a-Xhor12d |
| MQTL2 (1D, 55.1/219.7, 6.38) | 2/9.80 (9.95) | 5.45 (4.90–6.00) | Xcfd65-Xbarc169 |
| MQTL3 (3B, 47.9/-, 9.27) | 2/4.60 (15.00) | 6.35 (5.80–6.90) | Xgwm685-Xgwm376 |
| MQTL4 (5A, 46.5/351.1, 3.1) | 10/2.60 (14.26) | 6.13 (2.58–13.00) | Xwmc489-Xgwm639 |
| MQTL5 (5A, 65.2/535.1, 2.78) | 5/6.68 (11.37) | 8.60 (5.40–17.20) | Xwmc415-Xwmc795 |
| MQTL6 (5A, 98.4/-, 2.07) | 4/5.20 (11.30) | 8.17 (6.32–10.50) | Xcdo20-Xwmc0075 |
| MQTL7 (5A, 148.4/667.9, 2.77) | 1/22.20 (22.20) | 7.5 (NA) | Xwmc577-Xgwm595 |
| MQTL8 (6D, 108.8/246.1, 19.46) | 1/20.10 (20.10) | 3.2 (NA) | Xcfd1-Xcfd13 |
| MQTL9 (7A, 42.7/-, 3.86) | 3/3.90 (31.96) | 9.67 (7.30–13.40) | XwPt-11547-Xgwm1083 |
| MQTL10 (7A, 97.4/-, 8.06) | 7/13.10 (37.93) | 8.90 (2.70–20.43) | Xfbb186-Xbcd100 |
| MQTL11 (7A,140.3/-,2.77) | 1/119.10 (119.10) | 6.3 (NA) | Xgwm10-XP37/M64-255 |
| MQTL12 (7D, 128.7/-, 3.18) | 3/6.10 (6.100) | 23.40 (4.80–38.80) | Xbarc5-Xbarc154 |
| MQTL13 (7D, 149.5/139,19) | 1/17.2 (17.20) | 6.3 (NA) | Xwmc42-Xgdm67 |
| Mean CI: 6.01 | Mean of average CI 13.5 | Mean R2: 8.21 |
*For each MQTL, traits for the original QTLs were as follows: MQTL1 days to anthesis, days to maturity, MQTL2 kernel weight, water soluble carbohydrate concentration, MQTL3 harvest index, culm length, MQTL4 plant height, yield, flag leaf area, flag leaf length, drought susceptibility index due to spike dry matter, days to maturity, days to anthesis, total dry matter, leaf rolling, chlorophyll content, MQTL5 carbon isotopes discrimination, canopy temperature during grain filling, days to maturity, germination percentage, harvest index, MQTL6 osmotic potential, days to anthesis, days to maturity, germination percentage, MQTL7 days to heading, MQTL8 yield, MQTL9 total dry matter, spike dry matter, drought susceptibility index due to chlorophyll content, MQTL10 culm length, chlorophyll content, test weight, days to anthesis, days to maturity, yield, harvest index, MQTL11 canopy temperature during grain filling, MQTL12 spike length, days to heading, grain filling duration, MQTL13 leaf length, NA R2 (%) values not available