. 2014 Nov 3;9(11):e111863. doi: 10.1371/journal.pone.0111863

Table 3. Factorial ANOVA results for tested indicators (Z. mays cultivar, hemipteran species, insect abundance and aphid exposure period) and interdependence between these parameters affecting O₂ ^•− formation in the maize seedlings.

Tested factors and interactions	Df	F	p
Maize cultivar (C)	1	175.2	≤0.001
Hemipteran species (S)	2	87.9	≤0.001
Insect abundance (A)	3	68.2	≤0.001
Aphid exposure period (EP)	7	52.7	≤0.001
S × C	2	19.6	≤0.001
S × A	6	14.5	≤0.001
C × A	3	27.1	≤0.001
S × EP	14	14.9	≤0.001
C × EP	7	18.5	≤0.001
A × EP	21	10.6	≤0.001
S × C × A	6	12.4	≤0.001
S × C × EP	14	9.9	≤0.001
S × A × EP	42	8.7	≤0.001
C × A × EP	21	4.9	≤0.001
S × C × A × EP	42	3.7	≤0.008

Df-degrees of freedom; p-values less than 0.05 were considered significant; F-ratio is defined as the variance between samples/the variance within samples.

Table 3. Factorial ANOVA results for tested indicators (Z. mays cultivar, hemipteran species, insect abundance and aphid exposure period) and interdependence between these parameters affecting O2 •− formation in the maize seedlings.

Table 3. Factorial ANOVA results for tested indicators (Z. mays cultivar, hemipteran species, insect abundance and aphid exposure period) and interdependence between these parameters affecting O₂ ^•− formation in the maize seedlings.