Fig. 1From: Protective mechanisms of melatonin against selenium toxicity in Brassica napus: insights into physiological traits, thiol biosynthesis and antioxidant machineryInteractive effects of exogenous melatonin and selenium on photosynthesis traits. Effects of different treatments of exogenous melatonin (MT) (0 μM, 50 μM and 100 μM) and selenium (Se) (0 μM, 50 μM, 100 μM and 200 μM) on the a) Chl a (mg/g FW), b) Chl b (mg/g FW), c) carotenoids (mg/g FW), d) net photosynthetic rate (μM CO2 m− 2 s− 1) and (e and f) photochemical efficiency of PSII (Fv/Fm) of fully stretched leaves of Brassica napus cv. ZS 758Back to article page