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Table 1 Photosynsthis (Pn, μmol m− 2 s− 1), leaf stomatal conductance (gs, mol m− 2 s− 1), intercellular to ambient CO2 concentration ratio (Ci / Ca) and intrinsic water use efficiency (WUE) (μmol CO2 mol− 1 H2O) in hot pepper leaves subjected to varying levels of irrigation water salinity (ECiw, dS m− 1) and two leaching fractions (LF). The gas exchange parameters were measured with a fixed PPFD level of 1200 μmol m− 2 s− 1 (under light saturate condition). The values for each treatment were the averages of three measurements (23, 39 and 76 days after transplanting) with three to six replications for each measurement

From: An investigation on possible effect of leaching fractions physiological responses of hot pepper plants to irrigation water salinity

Factors P n g s Ci / Ca Intrinsic WUE
ECiw
 0.9 21.2a 0.81a 0.80a 32.6c
 4.7 16.0b 0.41b 0.74b 48.8b
 7.0 13.2c 0.32c 0.70c 58.4a
LF
 0.17 16.9 0.51 0.75 45.5
 0.29 17.5 0.56 0.75 45.4
ANOVA
 LF NS NS NS NS
 ECiw *** *** *** ***
 LF × ECiw * NS * *
  1. * and *** represent significant differences between means at 0.05 and 0.001 level of probability, respectively; NS, no significant. Different letters within a column indicate significant difference at P < 0.05 by Duncan’s multiple range tests