Fig. 2

Classification and distribution of the identified metabolites in developing caryopses of the notched-belly mutant (a) and the principal component analysis plot (b). a, Distribution of identified 214 metabolites in pie chart, sub-classifications of amino acids, carbohydrates, and lipids are shown with bar charts and histogram, respectively. b, Principal component analysis (PCA) model of eight samples at four developmental time points with six biological replications, where Ch represents the bottom chalky part and Tr the translucent upper part. ArAAs Aromatic amino acids, BCAAs Branched-chain amino acids, C5-BDA C5 branched dibasic acid, PPP Pentose phosphate pathway