Fig. 8From: Greater morphological and primary metabolic adaptations in roots contribute to phosphate-deficiency tolerance in the bread wheat cultivar Kenong199Principle component analysis (PCA) scores plot (a) and the corresponding loading plot (b) of root metabolome variation among the two cultivars based upon four biological replicates. PC1: the first principal component; PC2: the second principal component. The PCA scores plot distinguishes the metabolic profiles of the two cultivars under +Pi and − Pi conditions. The main metabolites contributing to the PC1 and PC2 are labeledBack to article page