Fig. 4 | Scientific Reports

Fig. 4

From: Root morphology, nitrogen metabolism and amino acid metabolism in soybean under low phosphorus stress

Fig. 4

Comparison of contents of phosphorus, nitrogen, nitrate nitrogen and ammonia nitrogen in roots of soybean varieties with different phosphorus efficiencies. (a) Phosphorus content. (b) Total nitrogen content. (c) Nitrate nitrogen content. (d) Ammonia nitrogen content. Columns represent the means ± SDs for three biological replicates. Treatments with the same letter are not significantly different from each other at a p-value level of 0.05.

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