Fig. 3
Changes in incident light intensity caused by variation of the distance between FluorCam panels and plants: influence on ΦPSII determination. False colour images were captured for a Arabidopsis Col-0 plants (28 DAS) using the system for small plants or b Nicotiana tabacum SNN (35 DAS) and c Zea mays (36 DAS) using the system for large plants. Light intensities were measured as indicated. The data are the mean ± SD of 4–5 replicate measurements. Letters indicate statistically significant differences at the p < 0.05 level according to ANOVA and post-hoc Bonferroni test