Table 2.

Results of the GLM analyses comparing fitness effects across two different PepMV strains (data in Fig. 2)

	LRT a	d.f.	P	η 2P b	1 − β c	% varianced
Intercept	359.522	1	<0.001	0.999	1	0
BAKGROUND	0.953	1	0.329	0.019	0.137	0
SITE	25.972	4	<0.001	0.405	0.987	51.70
BACKGROUND × SITE	31.776	4	<0.001	0.470	0.998	48.30

^aThe likelihood ratio test statistic follows a χ ² distribution

^bPartial η ² measuring the size of each effect when controlling for the other effects

^cPower of the test

^dBased on the maximum likelihood estimator of each component