Parameters | Bollgard (Cry1Ac) | Bollgard II (Cry1Ac and Cry2Ab) | Non-Bt | Statistical analysis |
---|---|---|---|---|
*Larval period (days) | 14.48 ± 0.21 (23) | 14.45 ± 0.29 (22) | 14.43 ± 0.26 (23) | F = 0.01; df = 2.65; P = 0.993 |
#Larval survival (%) | 76.7 | 73.3 | 76.7 | χ2 = 0.342; df = 2; P = 0.952 |
*Pupal period (days) | 7.68 ± 0.20 (19) | 7.63 ± 0.21 (19) | 7.58 ± 0.18 (19) | F = 0.07; df = 2.54; P = 0.930 |
#Pupal survival (%) | 82.6 | 86.4 | 82.6 | χ2 = 0.375; df = 2; P = 0.945 |
*Larval weight (mg) | 10.05 ± 0.35 (20) | 10.00 ± 0.37 (20) | 10.11 ± 0.32 (20) | F = 0.02; df = 2.57; P = 0.979 |
*Cocoon weight (mg) | 12.85 ± 0.63 (19) | 13.00 ± 0.54 (19) | 13.05 ± 0.68 (19) | F = 0.03; df = 2.54; P = 0.969 |