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Table 3 Effects of exogenous SA and NO on the net photosynthetic (Pn), transpiration rate (Tr), Fo, Fv/Fm and ΦPSII of leaves

From: Effects of foliar application of salicylic acid and nitric oxide in alleviating iron deficiency induced chlorosis of Arachis hypogaea L.

Treatments Pn [μmol m-2·s-1] Tr [mmol m-2·s-1] Fo Fv/Fm ΦPSII
CK 10.78 ± 1.14e 0.88 ± 0.11e 82.44 ± 1.71c 0.805 ± 0.04b 0.439 ± 0.02c
EDTA-Fe 16.07 ± 0.98d 1.15 ± 0.03d 95.78 ± 0.69b 0.873 ± 0.04a 0.535 ± 0.02a
SA 18.65 ± 0.86c 1.64 ± 0.07c 97.78 ± 1.07b 0.843 ± 0.04ab 0.483 ± 0.01b
SNP 18.72 ± 0.85c 1.79 ± 0.22c 97.67 ± 0.58b 0.858 ± 0.01a 0.468 ± 0.02b
SA+SNP 24.89 ± 1.24a 4.26 ± 0.15a 104.33 ± 3.79a 0.874 ± 0.01a 0.557 ± 0.02a
1/2(SA+SNP) 24.82 ± 0.65b 3.99 ± 0.18b 100.33 ± 4.51ab 0.865 ± 0.01a 0.466 ± 0.01bc
  1. CK: hydroponic systems; EDTA-Fe: Hoagland nutrient solution containing 0.1 mM EDTA-Fe; SA: hydroponic systems and foliar application of 1.0 mM SA; SNP: hydroponic systems and foliar application of 2.5 mM SNP; SA+SNP: hydroponic systems and foliar application of 1.0 mM SA and 2.5 mM SNP; 1/2(SA+SNP): hydroponic systems and foliar application of 0.5 mM SA and 1.25 mM SNP. Different lower case letters in the same line indicate a significant difference (P < 0.05) between different treatments. Data are means ± SD of three replicate samples per treatment.