Supplementary Information

ESI–MS/MS methods and parameters to identify the molecular species of the neutral lipids FFA, DAG, and TAG (Table S1)

p values for F tests of cultivar, nitrogen, and cultivar × nitrogen interactions on the lipids analyzed in this study (Table S2)

latent (loading) vector values on the variables (quantified lipids) (Table S3)

fitted asymptotic exponential curve for the FFA data comparing ESI–MS/MS and GC–FID (Figure S1A)

fitted asymptotic exponential curve for the TAG data comparing ESI–MS/MS and GC–FID (Figure S1B)

starch damage analysis of the six cultivars in three nitrogen conditions (Figure S2), relevant means on the log scale for the WGIN lipid total data (Figure S3)

lipid composition of selected minor neutral lipids (mole percentage of total lipids) (Figure S4A)

and comparison of LPC and PE (mole percentage of total lipids) between the six cultivars (Figure S4B)