Fig. 4From: Photosynthetic acclimation of Grammatophyllum speciosum to growth irradiance under natural conditions in SingaporeΔF/Fm′ ratio (a), ETR (b) and NPQ (c) of leaves of G. speciosum grown under different growth irradiances. Each value is the mean from 30 readings of 6 different leaves from 6 different plants. Vertical bars represent standard errors. When the standard error bars cannot be seen, they are smaller than the symbolsBack to article page