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Table 2 Net photosynthesis rate (Pn), stomatal conductance (gs), transpiration (E), photosynthetic N use efficiency (PNUE), intercellular carbon dioxide concentration (Ci) in two cultivars with two-year-old seedlings of C. lanceolata as affected by water, soil and their interaction

From: Drought stress introduces growth, physiological traits and ecological stoichiometry changes in two contrasting Cunninghamia lanceolata cultivars planted in continuous-plantation soils

Cultivars Water condition Soil Pn(µmol m− 2 s− 1) gs(mol m− 2 s− 1) Ci (µmol mol− 1) E (mmol m− 2 s− 1) PNUE (µmol g− 1 s− 1)
NC CK NP 4.38 ± 0.44a 0.09 ± 0.03b 267.06 ± 20.67c 0.88 ± 0.11ab 4.52 ± 0.45a
NC CK CP 3.02 ± 0.45b 0.12 ± 0.01a 320.06 ± 7.39a 0.73 ± 0.09c 4.28 ± 0.62a
NC MWC NP 2.97 ± 0.29b 0.06 ± 0.01c 298.63 ± 5.61b 0.77 ± 0.10bc 2.97 ± 0.28 cd
NC MWC CP 1.80 ± 0.24f 0.05 ± 0.01d 330.50 ± 14.37a 0.58 ± 0.09d 2.18 ± 0.29e
NC LWC NP 2.25 ± 0.12de 0.03 ± 0.01e 165.32 ± 2.81f 0.34 ± 0.03e 2.70 ± 0.14 cd
NC LWC CP 1.69 ± 0.22f 0.02 ± 0.00f 265.73 ± 21.75c 0.17 ± 0.05f 2.24 ± 0.30e
SC CK NP 4.53 ± 0.74a 0.10 ± 0.02b 285.85 ± 27.63b 0.93 ± 0.05a 4.17 ± 0.68ab
SC CK CP 2.99 ± 0.40b 0.10 ± 0.03ab 327.32 ± 7.07a 0.85 ± 0.18a 3.09 ± 0.41c
SC MWC NP 2.50 ± 0.18 cd 0.06 ± 0.01c 294.12 ± 1.62b 0.54 ± 0.04d 2.63 ± 0.19d
SC MWC CP 2.80 ± 0.28bc 0.06 ± 0.01 cd 293.37 ± 2.94b 0.55 ± 0.04d 3.82 ± 0.38b
SC LWC NP 2.29 ± 0.35d 0.03 ± 0.00e 214.71 ± 14.39e 0.23 ± 0.05f 2.77 ± 0.41 cd
SC LWC CP 1.94 ± 0.10ef 0.03 ± 0.00ef 251.94 ± 22.11d 0.22 ± 0.06f 2.62 ± 0.14d
   P:Fw < 0.0001 < 0.0001 < 0.0001 < 0.0001 < 0.0001
   P:Fc 0.0188 0.6076 0.2204 0.4886 0.46
   P:Fs < 0.001 0.4783 0.0019 < 0.0019 < 0.0001
   P:Fw×Fc 0.2662 0.2611 < 0.0001 < 0.0001 < 0.0001
   P:Fw×Fs < 0.001 < 0.0001 < 0.0001 0.0010 < 0.0001
   P:Fc×Fs 0.00098 0.94 < 0.0001 0.05 0.0022
   P:Fw×Fc×Fs < 0.001 0.0798 < 0.0001 < 0.0001 < 0.0001
  1. Values are mean ± SE. Values followed by different small letters and within parameter are significantly different at the P < 0.05 level according to Tukey’s test