N
Family
Cross
Treatment
Family × Cross
Family × Trt
Cross × Trt
Three-way interaction
Beetle Damage
290
3.6**
3.9*
153.1***
2.5*
2.7*
0.5
0.8
Aphid Infestation Level
296
2.0†
0.1
21.3***
0.7
0.1
2.5
Viral Symptoms (Early Season)
295
1.0
33.7***
4.0*
4.5**
0.4
0.1
0.2
Viral Symptoms (Late Season)
281
2.9*
24.4***
11.4***
5.7***
0.5
0.1
0.6
Notes: F values from mixed effects model ANOVA for the effects of Family (a random factor), Cross (inbred or outbred), Spray Treatment (weekly insecticide spray or no insecticide spray), and the two way interactions of Family by Cross, Family by Spray Treatment, Cross by Spray Treatment, and the three-way interaction on four measures of pest load: aphid infestation level, the amount of beetle damage, and symptoms of viral infection early and late in the growing season. F values were generated by Type III sums of squares from a general linear model (Proc GLM, SAS Institute, 2002).