Fig. 4From: Adaptive responses of carbon and nitrogen metabolisms to nitrogen-deficiency in Citrus sinensis seedlingsEffects of N supply on mean (± SE, n = 4) concentrations of nonstructural carbohydrates and ratios of sucrose/starch in leaves and roots. a and h Leaf and root glucose. b and i Leaf and root fructose. c and j Leaf and root sucrose. d and k Leaf and root total soluble sugars (summation of glucose + fructose + sucrose). e and l Leaf and root starch. f and m Leaf and root total nonstructural carbohydrate (TNC, summation of starch + total soluble sugars. g and n Leaf and root ratios of sucrose/starchBack to article page