Table 2.

The photosynthetic pigment content and photosynthetic characteristics of tomato and cucumber seedlings grown under various light environments.

Species	Treatment	Chlorophyll a (mg/g)	Chlorophyll b (mg/g)	Total Chlorophyll (mg/g)	Carotenoids (mg/g)	Fv/Fm	Y(II)	ETR
Tomato	CK	1.19 ± 0.01 a	0.53 ± 0.03 ab	1.74 ± 0.04 ab	0.04 ± 0.01 abc	0.79 ± 0.00 b	0.57 ± 0.00 a	13.24 ± 3.00 a
	B	1.21 ± 0.01 a	0.57 ± 0.04 ab	1.80 ± 0.05 ab	0.03 ± 0.01 bc	0.78 ± 0.00 b	0.50 ± 0.00 b	11.85 ± 6.03 b
	UV-A	1.22 ± 0.00 a	0.59 ± 0.01 a	1.83 ± 0.01 a	0.02 ± 0.00 c	0.78 ± 0.00 b	0.45 ± 0.00 b	10.50 ± 2.00 b
	FR	1.16 ± 0.03 abc	0.49 ± 0.03 bc	1.67 ± 0.06 bc	0.06 ± 0.01 ab	0.79 ± 0.00 b	0.50 ± 0.00 b	11.60 ± 3.00 b
	B+ UV-A	1.18 ± 0.01 ab	0.51 ± 0.01 abc	1.72 ± 0.02 abc	0.06 ± 0.01 ab	0.80 ± 0.00 a	0.51 ± 0.00 b	11.72 ± 3.00 b
	UV-A+FR	1.11 ± 0.04 c	0.44 ± 0.04 c	1.58 ± 0.07 c	0.08 ± 0.01 a	0.78 ± 0.00 b	0.51 ± 0.00 b	11.68 ± 3.00 b
	B+FR	1.13 ± 0.00 bc	0.44 ± 0.00 c	1.59 ± 0.01 c	0.07 ± 0.00 a	0.78 ± 0.00 b	0.51 ± 0.00 b	11.77 ± 5.00 b
Cucumber	CK	1.73 ± 0.01 bcd	0.55 ± 0.01 ab	2.31 ± 0.02 bcd	0.29 ± 0.00 a	0.77 ± 0.00 bc	0.40 ± 0.01 c	9.20 ± 0.30 c
	B	1.93 ± 0.03 a	0.62 ± 0.01 a	2.58 ± 0.04 a	0.28 ± 0.01 a	0.78 ± 0.00 ab	0.51 ± 0.01 a	11.80 ± 0.29 a
	UV-A	1.72 ± 0.03 cd	0.54 ± 0.01 b	2.28 ± 0.04 cd	0.30 ± 0.01 a	0.77 ± 0.00 c	0.47 ± 0.01 b	10.81 ± 0.27 b
	FR	1.70 ± 0.05 cd	0.52 ± 0.02 b	2.24 ± 0.07 cd	0.30 ± 0.00 a	0.75 ± 0.01 d	0.49 ± 0.00 ab	11.38 ± 0.08 ab
	B+ UV-A	1.90 ± 0.09 ab	0.63 ± 0.05 a	2.56 ± 0.14 ab	0.28 ± 0.01 a	0.77 ± 0.00 bc	0.46 ± 0.01 b	10.59 ± 0.35 b
	UV-A+FR	1.61 ± 0.06 d	0.52 ± 0.02 b	2.16 ± 0.08 d	0.29 ± 0.00 a	0.77 ± 0.00 bc	0.46 ± 0.01 b	10.72 ± 0.23 b
	B+FR	1.84 ± 0.06 abc	0.60 ± 0.03 ab	2.47 ± 0.09 abc	0.25 ± 0.00 b	0.79 ± 0.00 a	0.51 ± 0.01a	11.85 ± 0.24 a

Data represent mean ± SE (n=20). Different letters indicate significant differences between treatments at the p < 0.05 using the Duncan’s test.