Fig. 2From: Physiological and metabolomics analyses of young and old leaves from wild and cultivated soybean seedlings under low-nitrogen conditionsPCA of ionomic profiles and loading plots of ionomics in young and old leaves. (a) PCA of young and old leaves; (b) loading plot of young and old leaves; C, cultivar soybean; W, wild soybean; YL, young leaves; OL, old leaves; CK, control treatment; LN, low-nitrogen stressBack to article page