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Table 4 Effects of exogenous SA and NO on the Fe concentration, active Fe content and Fe (III)- chelate reductase activity

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

Treatments Fe concentration (mg kg-1DW) Active Fe content (mg kg-1FW) Fe(III)- chelate reductase acticity (μmol g-12 h-1FW)
Roots Stems Leaves
CK 852.07 ± 2.92e 118.33 ± 9.09d 125.11 ± 9.20e 33.45 ± 1.10f 3.12 ± 0.09d
EDTA-Fe 1382.71 ± 8.49a 172.34 ± 8.52b 155.36 ± 2.48d 50.02 ± 0.81e 2.82 ± 0.09e
SA 865.35 ± 18.99e 160.84 ± 4.47c 159.24 ± 9.64d 51.56 ± 0.25d 3.35 ± 0.02c
SNP 916.50 ± 2.89d 168.33 ± 4.62bc 183.34 ± 5.20c 53.42 ± 0.56c 3.37 ± 0.07c
SA+SNP 1173.14 ± 12.91b 183.89 ± 4.61a 264.92 ± 4.63a 64.06 ± 0.49a 4.00 ± 0.12a
1/2(SA+SNP) 1022.90 ± 8.78c 173.96 ± 5.12ab 227.15 ± 9.77b 61.30 ± 0.70b 3.74 ± 0.06b
  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.