Table 5

Summary of ANCOVA results for sporulation capacity
Source DF Type II SS F p
Block 1 3.616 11.05 0.0018
Pathogen 4 4.396 3.36 0.0175
Whole-plot error 44 14.404 6.48 <0.0001
Pustule density 1 2.189 43.34 <0.0001
Host 4 3.438 17.01 <0.0001
Host x Pustule density 4 0.618 3.06 0.0393
Pathogen x Host 16 0.944 1.17 0.3636
Split-plot error 21 1.061

The response variable is total spore production (mg spores per cm2 of leaf tissue) and it was log transformed before analysis. Log transformed pustule density (pustules per cm2of leaf tissue) was used as the covariate. The interaction effect of pathogen genotype x pustule density was not significant and was removed from the model.

Bruns et al.

Bruns et al. BMC Evolutionary Biology 2012 12:135   doi:10.1186/1471-2148-12-135

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