Effect of exogenous salicylic acid or indole acetic acid on their endogenous levels, germination, and growth in maize

Bulletin of the National Research Centre

Table 4 Effect of SA foliar spray on vegetative growth of maize plants

Criteria Treatment	Plant height (cm)	Plant fresh weight (g)	Leaves number	Leaves weight (g)	Plant dry weight (g)	Leaves dry weight (g)
	20 DAT
2 mM SA	122 ± 4^a	68.0 ± 2.7^a	9 ± 1^a	35.0 ± 1.2^a	7.6 ± 1.0^a	5.5 ± 0.3^a
1 mM SA	121 ± 5^a	57.7 ± 2.3^ab	10 ± 1^a	29.0 ± 1.3^ab	6.6 ± 0.4^ab	4.5 ± 0.2^ab
0.5 mM SA	123 ± 5 ^a	63.3 ± 1.8^ab	9 ± 1^a	32.3 ± 2.1^ab	6.6 ± 0.4^ab	4.6 ± 0.2^ab
0.25 mM SA	121 ± 6^a	51.0 ± 1.7^b	9 ± 1^a	27.7 ± 1.7^b	4.8 ± 0.3^b	3.8 ± 0.1^ab
Control	119 ± 5^a	53.0 ± 1.4^b	9 ± 1^a	26.7 ± 1.8^b	5.1 ± 0.3^b	3.5 ± 0.2^b
	40 DAT
2 mM SA	175 ± 7^a	260 ± 7^a	14 ± 1^a	103 ± 3^a	34.2 ± 0.2^a	18.5 ± 0.4^a
1 mM SA	176 ± 6^a	260 ± 9^a	14 ± 1^a	102 ± 4^a	34.2 ± 0.1^a	18.4 ± 0.3^a
0.5 mM SA	183 ± 8^a	257 ± 7^a	14 ± 1^a	102 ± 4^a	33.9 ± 0.2^a	18.4 ± 0.2^a
0 .25 mM SA	190 ± 8^a	278 ± 8^a	14 ± 1^a	110 ± 4^a	36.6 ± 0.2^a	19.8 ± 0.4^a
Control	171 ± 6^a	263 ± 6^a	14 ± 1^a	104 ± 5^a	34.0 ± 0.3^a	18.8 ± 0.3^a

Data within a column followed with the same letter are not significantly different at the level 5%