Fig. 4From: Effect of soil aeration on root morphology and photosynthetic characteristics of potted tomato plants (Solanum lycopersicum) at different NaCl salinity levelsEffects of NaCl stress and soil aeration on (a) net photosynthetic rate (Pn), (b) stomatal conductance (Gs), (c) transpiration rate (Tr) and (d) instantaneous water use efficiency at different growth stages for potted tomato. Columns with the same letter represent values that are not significantly different at the 5% level of probability according to the Duncan’s new multiple-range test for different treatments at same growth stage, and same capital letter represent values that are not significantly different at the 5% level of probability according to the Duncan’s new multiple-range test at different growth stage for the same treatments. At the fruit ripening stage, under the S3A0 treatment plants all died, so the column is emptyBack to article page