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Table 2 The chlorophyll concentration of the Ov and Bn plantlets cultured under different inorganic nitrogen concentrations

From: Differential contributions of NO3/NH4+ to nitrogen use in response to a variable inorganic nitrogen supply in plantlets of two Brassicaceae species in vitro

Parameters Plant species Inorganic nitrogen concentration (mM)
20 40 60 80
chl a (mg/g) Ov 0.59 ± 0.04a 0.70 ± 0.10a 0.75 ± 0.09a 0.79 ± 0.10a
Bn 0.50 ± 0.05b 0.53 ± 0.06b 0.70 ± 0.03a 0.78 ± 0.08a
chl b (mg/g) Ov 0.30 ± 0.04b 0.35 ± 0.02ab 0.37 ± 0.05ab 0.40 ± 0.03a
Bn 0.17 ± 0.03b 0.19 ± 0.02b 0.22 ± 0.03ab 0.28 ± 0.03a
chl a + b (mg/g) Ov 0.89 ± 0.06b 1.05 ± 0.09ab 1.12 ± 0.13ab 1.19 ± 0.11a
Bn 0.67 ± 0.07c 0.72 ± 0.08bc 0.92 ± 0.06ab 1.05 ± 0.11a
  1. Ov-Orychophragmus violaceus, Bn-Brassica napus. The ratio of nitrate to ammonium within each inorganic nitrogen concentration was 2:1. Each value represents the mean ± SD (n = 3). Values signed with the same letter in each line are not significantly different by Tukey’s test (p > 0.05)