Skip to main content
Fig. 5 | BMC Plant Biology

Fig. 5

From: Physiological responses of Lepidium meyenii plants to ultraviolet-B radiation challenge

Fig. 5

Effects of UV-B irradiation on maca leaf gas exchanges. Parameters of CO2 assimilation rate (A, μmol CO2 m− 2 s− 1) (a, e), intercellular CO2 concentration (Ci, μmol CO2 mol− 1) (b, f), stomatal conductance (gs, mol H2O m− 2 s− 1) (c, g) and transpiration rate (E, mmol H2O m− 2 s− 1) (d, h) were evaluated in leaves of UV-B treated and control plants before (a-d) and after recovery (e-h). Treated plants were exposed to 100 μmol quanta m− 2 s− 1 and 6.08 kJ m− 2 d− 1 UV-B. UV-B was daily applied following a time course from 1 to 14 days. Control plants did not receive UV-B radiation. For recovery test, UV-B treated plants were transferred to control conditions for two weeks. Error bars represent the standard error of the mean (n = 3). The different letters indicate significant differences between means tested using Tukey’s HSD tests (P < 0.05)

Back to article page