Water-stress physiology of <i>Rhinanthus alectorolophus</i>, a root-hemiparasitic plant - Fig 3

<p><b>Photosynthetic (A) and transpiration rates (B) at the irradiance of 500 μmol m</b>^<b>–2</b><b>s</b>^<b>–1</b><b>in the leaves of flowering <i>Rhinanthus alectorolophus</i> as a function of osmotic potential.</b> Plants were grown under high (W+) and low irrigation treatments (W–). Points correspond to individual plants, n = 11 and n = 10 for W+ and W–. Each plant was measured twice: when drought-stressed and water-saturated. Linear regression lines are presented by solid and dashed lines (df = 5; LR = 42.15, P<0.0001 (A); df = 4, LR = 31.00, P<0.0001 (B)). Grey vertical line relates to average osmotic potential at turgor loss point (Ψ_{π TLPcor} = –1.66 MPa; Figures A and B in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0200927#pone.0200927.s001" target="_blank">S1 Fig</a>; <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0200927#pone.0200927.t001" target="_blank">Table 1</a>) determined by pressure-chamber measurements.