Table 6.
Mean values for chlorophyll index (SPAD units), thylakoid membrane damage (Fo/Fm ratio; unitless) and quantum yield of PSII (ΦPSII; unitless) of six highest (top) and six lowest (bottom) ranked wheat–alien chromosome lines along with CS check under irrigation (control) and drought stress (water withheld for 16 d) (Experiment 3)
| Rank | Chlorophyll index (SPAD units) | Thylakoid membrane damage (Fo/Fm ratio; unitless) | Quantum yield of PSII (ΦPSII; unitless) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Line | Irrigated | Drought | Line | Irrigated | Drought | Line | Irrigated | Drought | |
| Top 6 | |||||||||
| TA7598 | 54.25 ± 0.65 | 49.30 ± 0.80 | TA5608 | 0.200 ± 0.012 | 0.425 ± 0.012 | TA7656 | 0.58 ± 0.02 | 0.47 ± 0.03 | |
| TA7600 | 40.30 ± 1.20 | 43.15 ± 1.45 | TA7659 | 0.195 ± 0.011 | 0.420 ± 0.021 | TA7619 | 0.53 ± 0.01 | 0.45 ± 0.02 | |
| TA7543 | 42.10 ± 0.50 | 38.25 ± 0.15 | TA5599 | 0.215 ± 0.011 | 0.415 ± 0.011 | TA7543 | 0.49 ± 0.01 | 0.43 ± 0.02 | |
| TA7655 | 42.30 ± 0.40 | 38.15 ± 0.45 | TA5600 | 0.185 ± 0.012 | 0.405 ± 0.012 | TA5088 | 0.59 ± 0.01 | 0.40 ± 0.01 | |
| TA5638 | 47.15 ± 1.65 | 38.10 ± 0.55 | TA5584 | 0.195 ± 0.013 | 0.405 ± 0.011 | TA5638 | 0.51 ± 0.01 | 0.39 ± 0.01 | |
| TA5088 | 46.15 ± 0.35 | 36.90 ± 1.30 | TA3583 | 0.225 ± 0.011 | 0.400 ± 0.011 | TA7545 | 0.47 ± 0.01 | 0.37 ± 0.01 | |
| Bottom 6 | |||||||||
| TA5637 | 43.60 ± 1.30 | 23.80 ± 0.45 | TA7599 | 0.190 ± 0.010 | 0.260 ± 0.012 | TA7544 | 0.53 ± 0.01 | 0.13 ± 0.01 | |
| TA3583 | 47.85 ± 1.76 | 21.45 ± 1.15 | TA5088 | 0.195 ± 0.012 | 0.255 ± 0.016 | TA7667 | 0.37 ± 0.01 | 0.13 ± 0.01 | |
| TA7657 | 34.85 ± 0.75 | 20.85 ± 0.75 | TA5617 | 0.220 ± 0.015 | 0.255 ± 0.013 | TA6656 | 0.43 ± 0.01 | 0.12 ± 0.01 | |
| TA5640 | 30.00 ± 0.45 | 20.75 ± 0.35 | TA5638 | 0.155 ± 0.016 | 0.255 ± 0.012 | TA3583 | 0.46 ± 0.01 | 0.11 ± 0.01 | |
| TA7664 | 34.50 ± 1.10 | 19.95 ± 0.36 | TA7619 | 0.210 ± 0.012 | 0.255 ± 0.012 | TA5584 | 0.52 ± 0.01 | 0.11 ± 0.01 | |
| TA5584 | 39.35 ± 0.45 | 19.60 ± 1.02 | TA7656 | 0.195 ± 0.015 | 0.255 ± 0.011 | TA5636 | 0.47 ± 0.01 | 0.11 ± 0.01 | |
| Check (CS) | |||||||||
| TA3008 | 32.3 ± 1.10 | 21.05 ± 0.45 | TA3008 | 0.220 ± 0.011 | 0.355 ± 0.011 | TA3008 | 0.47 ± 0.03 | 0.32 ± 0.01 | |
| LSD (Genotype) | 1.89 | 0.017 | 0.020 | ||||||
| LSD (Genotype x Stress) | 1.86 | 0.003 | 0.005 | ||||||
Genotypes were ranked based on numerical values under drought stress. Values are means ± standard error of the respective trait. CS Chinese Spring, LSD least significant difference