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Table 2 The chlorophyll concentration of Brassica napus plantlets cultured under nitrate treatment

From: Implication of quantifying nitrate utilization and CO2 assimilation of Brassica napus plantlets in vitro under variable ammonium/nitrate ratios

Parameters NO3-N(mM) (+ 20 mM NH4-N)
5 10 20 40
chl a (mg/g) 0.24 ± 0.02c 0.46 ± 0.03bc 0.64 ± 0.06ab 0.87 ± 0.09a
chl b (mg/g) 0.09 ± 0.01c 0.14 ± 0.01bc 0.20 ± 0.02b 0.29 ± 0.02a
chl a + b (mg/g) 0.32 ± 0.02c 0.60 ± 0.04bc 0.84 ± 0.08b 1.16 ± 0.10a
  1. Each nitrate treatment contained 20 mM ammonium. Each value represents the mean ± SE (n = 3). Values signed with the same letter in each line are not significantly different by Tukey’s test (p > 0.05)