Effects of N and Ca supply on phenotype and antioxidant metabolism in apple leaves. L−: low N without Ca (0.5 mM NO3− + 0 mM Ca), L+: low N with Ca (0.5 mM NO3− + 5 mM Ca), H−: high N without Ca (10 mM NO3− + 0 mM Ca), and H+: high N (IMAGE)

Nanjing Agricultural University The Academy of Science

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