. 2020 May 27;11:674. doi: 10.3389/fpls.2020.00674

TABLE 6.

Effect of Sb on the chlorophyll a and b and total chlorophyll contents, chlorophyll a/b ratio, total carotenoids (Car), carotenoid/chlorophyll ratio, and photosynthetic efficiency (F_V/F_M) in tomato leaves.

Treatments	Chl a (μg g⁻¹ FW)	Chl b (μg g⁻¹ FW)	Chl a + b (μg g⁻¹ FW)	Chl a/chl b	Carotenoids (μg g⁻¹ FW)	Carotenoids/total chl	F_V/F_M
Control	1947.0 ± 77.7^a	979.8 ± 109.4^a	2947.8^a	1.98^b	185.4 ± 12.9^b	0.070^c	0.771 ± 0.045^a
0.5 mM Sb	1375.6 ± 76.2^b	607.47 ± 38.7^b	1968.3^b	2.27^a	178.2 ± 38.7^b	0.095^b	0.605 ± 0.058^b
1.0 mM Sb	1221.4 ± 65.2^c	523.2 ± 38.4^c	1796.5^c	2.35^a	225.3 ± 23.2^a	0.132^a	0.586 ± 0.036^c

The data are from 10 independent experiments, each carried out in triplicate (different letters indicate significant differences at p < 0.05, Mann–Whitney U-test).