Leaf biomass, chlorophyll content and PSI to PSII ratio of Col-0, Ws-4, and L<i>er</i>-0 accessions.

a<p>Leaf chlorophyll content was measured spectrophotometrically after extraction in ethanol, and expressed on leaf area and on fresh weight basis.</p>b<p>PSI/PSII ratio was measured by EPR spectroscopy in isolated thylakoids.</p><p>The data were expressed as means ±SD (n = number of replicates). The parameters were also expressed relative to Col-0. *, Significantly different from Col-0 (Student's t-test P<0.05).</p><p>The parameters were measured on plants grown hydroponically for six weeks at an irradiance of 120 µmol photons m⁻² s⁻¹.