Table 1.
Effect of drought and heat stresses on maize agronomic traits.
| Maize cultivars | Treatments | Plant height (cm) | Stem diameter (mm) | Leaf area (cm2) | Shoot fresh weight/plant (g) | Shoot dry weight/plant (g) |
|---|---|---|---|---|---|---|
| Xida 319 | Ck | 181.67 ± 3.28 | 22.84 ± 0.70 | 455.87 ± 20.13 | 216.20 ± 7.63 | 51.43 ± 1.82 |
| H | 165.67 ± 2.96* | 22.59 ± 0.69 | 438.54 ± 20.88 | 209.10 ± 2.29 | 49.50 ± 3.50 | |
| D | 163.33 ± 2.85* | 20.48 ± 0.92 | 435.07 ± 22.52 | 190.43 ± 7.47* | 42.87 ± 1.95* | |
| H + D | 154.87 ± 6.26** | 19.06 ± 0.60** | 386.19 ± 9.13* | 173.30 ± 6.36** | 41.90 ± 1.63* | |
| Means | 166.38 | 21.24 | 428.92 | 197.26 | 46.43 | |
| Xida 889 | Ck | 185.67 ± 3.76 | 23.34 ± 0.22 | 542.73 ± 6.80 | 233.83 ± 10.08 | 53.67 ± 1.86 |
| H | 173.67 ± 2.19* | 22.63 ± 0.11 | 517.11 ± 15.21 | 214.93 ± 8.03 | 51.87 ± 0.85 | |
| D | 170.50 ± 4.80* | 20.92 ± 0.40* | 494.68 ± 4.22* | 191.33 ± 10.84* | 48.13 ± 1.82* | |
| H + D | 158.33 ± 2.85** | 20.25 ± 1.08** | 465.37 ± 15.31** | 178.90 ± 8.59** | 46.23 ± 1.13* | |
| Means | 172.04 | 21.79 | 504.98 | 204.75 | 49.98 |
Values are means of three replicates ±SE. For Duncan’s results, means with asterisks are considered as significant different compared with control. *P ≤ 0.05; **P ≤ 0.01.
Ck, control; H, heat stress; D, drought stress and H + D, heat + drought stress.