Table 9.
Cross combinations with the highest SCA effects for grain yield under optimum, managed low N and heat and drought stress conditions.
| Cross | Management | SCA effects | Mean GY (t ha-1) | Nutritional group |
|---|---|---|---|---|
| L10/T7 | OPT | 1.89 | 10.1 | Zn + Normal |
| L7/T3 | OPT | 1.87 | 9.6 | Zn + QPM |
| L6/T1 | OPT | 1.78 | 11.3 | Zn + Normal |
| L9/T4 | OPT | 1.54 | 9.2 | Zn + Provitamin A |
| L3/T6 | LN | 1.72 | 2.1 | Zn + QPM |
| L10/T7 | LN | 1.32 | 3.2 | Zn + Normal |
| L9/T7 | LN | 1.29 | 3.3 | Zn + Normal |
| L7/T3 | LN | 1.03 | 3.1 | Zn + QPM |
| L6/T6 | HMDS | 1.37 | 4.4 | Zn + QPM |
| L2/T4 | HMDS | 1.19 | 3.9 | Zn + Provitamin A |
| L3/T6 | HMDS | 1.18 | 4.4 | Zn + QPM |
| L10/T7 | HMDS | 1.03 | 4.2 | Zn + Normal |
OPT, optimum; LN, managed low nitrogen; HMDS, combined heat and drought conditions; QPM, quality protein maize.