Table 1.

Acyrthosiphon pisum feeding behavior on an artificial diet as affected by luteolin and genistein and as indicated by EPG patterns

Flavonoid added	Concentration (μg cm−3)	EPG patterna
Control	0	d-C, d-E1, d-E2, d-G
Luteolin	1	d-C, d-E1, d-E2, d-G
	10	d-C, d-E1, d-E2, d-G
	100	d-C, d-E1
	1,000	d-C
Genistein	1	d-C, d-E1, d-E2, d-G
	10	d-C, d-E1, d-E2, d-G
	100	d-C, d-E1, d-E2, d-G
	1,000	d-C, d-G

^a d-C indicates stylet penetration of the diet and is analogous to stylet penetration of the plant tissues; d-E1 indicates salivation into the diet and is analogous to the excretion of saliva into the phloem; d-E2 indicates passive ingestion of the diet and is analogous to the ingestion of phloem sap; d-G indicates active ingestion of the diet and is analogous to the ingestion of xylem sap