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. 2013 May;87(9):4929–4937. doi: 10.1128/JVI.03571-12

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
a

Parameter 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.

b

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

c

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

d

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