SE) feeding preference index (PI) values for different sampling days of bean leaf beetle fed soybean PI 227687 leaflets expressing induced response by bean leaf beetle feeding.
| Days after Herbivory (DAH) | Mean PI index1 |
| 5 | 0.761 0.074 ab |
| 10 | 0.707 0.040 abc |
| 12 | 0.601 0.048 cd |
| 14 | 0.573 0.026 d |
| 16 | 0.643 0.042 bcd |
| 20 | 0.732 0.059 ab |
| 25 | 0.812 0.035 a |
| P-value2 | 0.0040 |
2Probability values for the F-test of treatments in each test soybean (df = 1)