Table 1.

Effect of plan hormone treatment on MDA content and antioxidant enzymatic activity of pak choi leaf.

Treatments	MDA content (nmol/g)	SOD activity (U/g)	POD activity (U/g)	CAT activity (nmol/min/g)
CK	122.81 ± 8.02c	36.61 ± 3.81d	7358.76 ± 492.98c	170.88 ± 14.62d
JA20	107.65 ± 11.95d	60.76 ± 5.47c	9943.60 ± 461.72b	280.82 ± 14.90bc
JA50	130.52 ± 11.50c	92.68 ± 11.00b	9164.27 ± 103.51b	322.12 ± 17.76a
SA20	136.52 ± 10.59c	57.00 ± 3.25c	10995.84 ± 600.01a	187.05 ± 15.45d
SA50	207.95 ± 18.85a	60.98 ± 0.34c	9811.09 ± 554.35b	263.38 ± 24.51c
JA20+SA20	159.78 ± 5.14b	63.23 ± 6.29c	8178.07 ± 545.00c	265.19 ± 22.23c
JA50+SA50	171.85 ± 15.31b	139.78 ± 14.12a	7707.23 ± 298.38c	314.39 ± 22.99ab

Data are mean ± SD (n=3). Values with different lowercase letters in the same column indicate significant differences among treatments at the 0.05 level.