Table 1. EPG parameters of Sitobion avenae during an 8-h recording on wheat seedlings soil-drenched with water (Control) or β-aminobutyric acid (BABA) 48 h earlier.
| EPG Parameters | Control n = 21 | BABA n = 25 |
| Number of probes | 10.7±1.1 | 13.9±2.1 |
| Number of short probes (<3 min) | 4.0±0.6 | 5.5±1.2 |
| Number of probes to the 1st E1 | 7.8±1.3 | 8.6±1.0 |
| Time from 1st probe to 1st E1 | 2.3±0.4 | 2.6±0.3 |
| Total duration of probing (h) | 7.1±0.1 | 7.0±0.2 |
| Total duration of pathway | 2.1±0.2 | 2.3±0.2 |
| Total duration of E2 (h) | 4.1±0.3 | 3.8±0.4 |
| Mean duration of E2 (h) | 1.7±0.3 | 2.4±0.5 |
| Total duration of E1 (min) | 16.0±4.1 | 12.8±2.3 |
| Mean duration of E1 (min) | 5.9±1.6 | 5.2±1.2 |
| Number of E2 | 3.0±0.3 | 2.6±0.4 |
| Number of E1 | 3.1±0.4 | 2.9±0.4 |
| Duration of xylem ingestion (h) | 0.6±0.2 | 0.6±0.1 |
Values represent means (± SEM). E1: Salivation phase; E2: Phloem sap ingestion. n: number of replicates.