Fig. 2From: Combined proteomics, metabolomics and physiological analyses of rice growth and grain yield with heavy nitrogen application before and after droughtSoluble sugars, free proline and MDA content, and several nitrogen metabolism enzymes activities of ‘Wufengyou 286’ under heavy nitrogen application before and after drought. a Soluble sugar content, b Free proline content, c MDA content, d NR activity, e GS activity and f GDH activity. Values are averages ± SD (n = 3), and statistically significant differences are indicated by lowercase letters (p < 0.05)Back to article page