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

Botanical Studies

Table 1 Effects of exogenous SA and NO on plant growth of peanut at 21 days treatment

Treatments	Shoot height (cm/plant)	Root length (cm/plant)	Root volume (mL/plant)	Fresh weight (g/plant)	Root/Shoot ratio
CK	28.60 ± 0.66c	8.53 ± 0.06d	0.98 ± 0.08d	6.17 ± 0.08d	0.18 ± 0.01d
EDTA-Fe	33.90 ± 0.36b	9.63 ± 0.78d	1.31 ± 0.01b	7.05 ± 0.70c	0.21 ± 0.01c
SA	33.80 ± 0.79b	11.03 ± 1.23c	1.17 ± 0.06c	7.50 ± 0.66bc	0.22 ± 0.01bc
SNP	34.33 ± 0.46b	11.67 ± 0.38bc	1.18 ± 0.07c	7.90 ± 0.29ab	0.24 ± 0.01b
SA+SNP	36.77 ± 0.57a	13.23 ± 0.32a	1.49 ± 0.05a	8.29 ± 0.23a	0.26 ± 0.01a
1/2(SA+SNP)	34.50 ± 0.46b	12.73 ± 0.59ab	1.37 ± 0.08b	8.16 ± 0.13ab	0.25 ± 0.01a

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.