Plants were grown under greenhouse conditions (day/
night temperatures of 23 C/18 C, 16 h photoperiod, photon flux
density of 400mmol m2 s1 and relative humidity of 70–75%) and
irrigated every 2 days with the nutritive solution (macronutrients:
0.52 mM KH2PO4, 6.75 mM Ca(NO3) 2, H2O, 1.63 mM MgSO47H2O,