Parameters | Bollgard (Cry1Ac) | Bollgard II (Cry1Ac and Cry2Ab) | Non-Bt | Statistical analysis |
---|---|---|---|---|
*Larval period (days) | 10.85 ± 0.26 (26) | 10.84 ± 0.29 (25) | 10.80 ± 0.21 (25) | F = 0.01; df = 2.73; P = 0.991 |
#Larval survival (%) | 86.7 | 83.3 | 83.3 | χ2 = 0.317; df = 2; P = 0.957 |
*Pupal period (days) | 7.14 ± 0.17 (22) | 7.10 ± 0.14 (20) | 7.05 ± 0.18 (21) | F = 0.08; df = 2.60; P = 0.926 |
#Pupal survival (%) | 84.6 | 80.0 | 84.0 | χ2 = 0.463; df = 2; P = 0.927 |
*Larval weight (mg) | 11.00 ± 0.28 (20) | 11.00 ± 0.36 (20) | 11.15 ± 0.32 (20) | F = 0.03; df = 2.57; P = 0.971 |
*Cocoon weight (mg) | 13.65 ± 0.55 (20) | 13.55 ± 0.60 (20) | 13.75 ± 0.61 (20) | F = 0.07; df = 2.57; P = 0.929 |