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

Botanical Studies

Table 5 Effects of exogenous SA and NO on SOD, POD and CAT activities and MDA content and superoxide produce rate of peanut leaves

Treatments	SOD activity (Unit mg^-1protein)	POD activity (Unit mg^-1protein)	CAT activity (Unit g^-1protein)	MDA content (nmol g^-1FW)	O₂^·-generation rate (μmol g^-1 h^-1FW)
CK	2.36 ± 0.08b	0.30 ± 0.04d	0.058 ± 0.003c	34.12 ± 3.98a	6.41 ± 0.52a
EDTA-Fe	2.34 ± 0.07b	0.41 ± 0.03c	0.067 ± 0.002b	19.21 ± 1.64b	4.73 ± 0.47bc
SA	2.52 ± 0.06a	0.47 ± 0.01c	0.069 ± 0.001ab	21.99 ± 3.71b	5.28 ± 0.06ab
SNP	2.52 ± 0.16a	0.50 ± 0.09bc	0.068 ± 0.001ab	19.93 ± 1.93b	4.55 ± 1.31bc
SA+SNP	2.58 ± 0.03a	0.64 ± 0.04a	0.071 ± 0.001a	17.31 ± 0.87b	3.50 ± 0.32c
1/2(SA+SNP)	2.52 ± 0.05a	0.57 ± 0.06ab	0.069 ± 0.002ab	18.77 ± 2.67b	4.40 ± 1.53bc

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.