qPCR analytic results of gene expression levels for 13 detectable genes potentially involved in carbon portioning between starch and other carbohydrates. Biological triplets (seeds of 12 days after flowering from three different plants) and technical triplets were performed. The difference between BP034 and GM077 was analyzed statistically by the ANOVA test and presented as “increased” (*P < 0.05) and “significantly increased” (**P < 0.01) between the two rice cultivars. Error bars are as indicated. AGP (gene for ADP-glucose pyrophosphorylase), UGP (gene for UDP-glucose pyrophosphorylase), SS (gene for starch synthase), SUS (gene for sucrose synthase), BE (gene for branching enzyme), ISA (gene for isoamylase), SUSIBA2-like (gene for sugar signaling in barley 2 - like).