Table 2.

Statistical analysis of phloem EPG parameters K to T of uninfected B. tabaci biotypes B and Q probing TYLCV-infected and virus-free tomato plants (experiment 1)^a

Parameter, description	P value
	Biotype	Infection	Interaction
K, total duration of E(pd)1	0.034	0.001	0.159
L, total no. of E(pd)1	0.151	0.008	0.899
M, mean duration of E(pd)1	<0.001	0.926	0.523
N, total duration of E(pd)2	<0.001	0.423	0.922
O, total no. of E(pd)2	0.16	0.034	0.701
P, mean duration of E(pd)2	<0.001	0.582	0.859
Q, potential E(pd)2 indexb	<0.001	0.994	0.806
R, % of non-E(pd) time in NPc	0.061	0.006	0.689
S, % of probes reaching phloem phase	0.019	0.78	0.203
T, % of phloem phases reaching waveform E(pd)2d	0.805	0.024	0.461

^aParameter letters correspond to those in Fig. 3. P values were calculated by using two-way ANOVA with the main effects “biotype” (B or Q), “infection” (TYLCV-infected plant or virus-free plant), and their interaction. P values in boldface type are significant at an α value 0.05.

^bCalculated as [total time in E(pd)2]/[recording time − time to first E(pd)].

^cCalculated as (total time in NP)/[total recording time − time in E(pd)1 and E(pd)2].

^dCalculated as [number of times reaching E(pd)2]/[number of times reaching E(pd)].