Table 2.

General linear model testing the effects of isolate (nested within population), population, temperature, and their interactions on growth rate of Rhynchosporium commune

Source	df	MS	F	P
Isolate (pop.)	109, 548	2.5803	13.39	< 0.0001
Population	8, 109	12.8836	4.99	< 0.0001
Temperature	2, 16	87.7930	30.20	< 0.0001
Pop. × temp.	16, 193	2.9069	3.42	< 0.0001
Pop. × temp. × isol.	193, 548	0.8496	4.41	< 0.0001
Error	548	0.1927

The effect of population was tested over isolates nested within population. Temperature was tested over its interaction with population, and that interaction was tested over the interaction including isolate. Other effects were tested over the pooled error.