Fig. 2.
Developmental changes in PSII efficiency measured as Fv/Fm (A, B) and in photosynthetic CO2 uptake (C, D). Measurements were performed with leaves collected from wild-type and RNAi-W1-7 plants grown either at low (LL, 120 μmol s–1 m–2, A, C) or high (HL, 350 μmol s–1 m–2, B, D) irradiance. PSII efficiency was determined on 9–15 excised leaves; photosynthetic assimilation was measured in situ on 15 attached leaves of each genotype.