With the exception of NormFinder, the same 3 genes–EF, EIF4A and GAPDH–were identified as the best-suited reference genes for the majority of the treatments, albeit in varying order (EF, EIF4A and GAPDH for the different developmental stages and body parts; EF, EIF4A and TUB for the fungal infection and dietary treatments). This evidence concerns the gene GAPDH and fungal infectious disease.