Table 2.

Effect of plant hormone treatment on the photosynthetic pigment content of pak choi plants.

Treatments	Chlorophyll a content (mg/g)	Chlorophyll b content (mg/g)	Total chlorophyll content (mg/g)	Carotenoid content (mg/g)	Total chlorophyll content/carotenoid content
CK	1.62 ± 0.08de	1.08 ± 0.09c	2.71 ± 0.01d	0.1621 ± 0.0052bc	16.71 ± 0.54c
JA20	2.35 ± 0.08a	1.41 ± 0.07b	3.76 ± 0.06b	0.1783 ± 0.0019a	21.06 ± 0.41b
JA50	1.89 ± 0.09c	1.35 ± 0.13b	3.23 ± 0.14c	0.1582 ± 0.0058cd	20.48 ± 1.61b
SA20	1.55 ± 0.08e	0.65 ± 0.11d	2.20 ± 0.04f	0.1691 ± 0.0066ab	13.01 ± 0.71d
SA50	1.66 ± 0.02de	0.74 ± 0.10d	2.40 ± 0.09e	0.1713 ± 0.0053a	14.04 ± 0.93d
JA20+SA20	1.74 ± 0.14cd	1.40 ± 0.08b	3.14 ± 0.06c	0.1518 ± 0.0056d	20.72 ± 1.14b
JA50+SA50	2.09 ± 0.14b	1.96 ± 0.09a	4.05 ± 0.19a	0.1513 ± 0.0016d	26.75 ± 1.51a

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.