Table 4. Damages of corn lines infested with ACB at R1 silking stage.
| Hybrids | Tunnels /100 Plants | |||
|---|---|---|---|---|
| 2013 | 2014 | |||
| Spring corn | Summer corn | Spring corn | Summer corn | |
| Zh58Z31 | 56.7±3.9 a | 92.8±7.0 a | 133.8±19.8 a | 106.7±21.1 a |
| Zh58Ie | 5.6±2.8 b | 5.0±1.4 b | 32.1±7.3 b | 37.8±7.5 b |
| Z31Ac | 4.4±2.4 b | 7.8±2.2 b | 82.7±31.8 ab | 22.0±4.5 b |
| AcIe | 3.3±0.9 b | 4.4±1.7 b | 44.3±22.4 b | 15.3±2.3 b |
| F | 93.71 | 130.42 | 4.28 | 13.29 |
| df | 3, 20 | 3, 20 | 3, 8 | 3, 8 |
| P | <0.0001 | <0.0001 | 0.0445 | 0.0018 |
The mean±SE in the same column followed by the same letter were not significantly different by Fisher’s Protect LSD test (P ≥ 0.05). The Zh58Z31 corn line is a hybrid of the non-transgenic counterpart lines Zong 31 (Z31) and Zheng 58 (Zh58) was used as a negative control. The Zh58Ie corn line is a hybrid that only expresses Cry1Ie. The Z31Ac corn line is a hybrids that only expresses Cry1Ac. The AcIe corn strain, is a hybrid that expresses both Cry1Ac and Cry1Ie.