Figure 1 : Leaf physiological parameters in control and drought
treated plants. Poplar saplings were subject to drought for 7 days. Leaf
observations were made on day 0 (n =24), day 1 (n =6), day 4 (n=18), and
day 7 (n=18) of (a ) Net photosynthesis
(Anet , µmol m-2s-1), (b ) transpiration (E , mmol
m-2 s-1), (c ) stomatal
conductance (gs, mmol m-2s-1) and (d ) leaf water potential
(LWP , MPa). Values are plotted as average +/- 1 standard
deviation (ns indicates no statistical significance between control and
drought treatments, * indicates statistically significant difference, P
<0.05).