Figure 7.

Spectral leaf reflectance and absorbance (in vivo) curve from 400 to 700 nm in Nicotiana tabacum leaves of plants grown in a greenhouse with different growth stages and contents of gibberellin acid (GA₃) or with paclobutrazol (PAC) and full sunlight and shade. (A) The reflectance curves were obtained with one of the spectroradiometers. (B) The absorbance curve was obtained by equation [A = 1 − (R + T)] (more details in Figure 1 and Figure 2). Insets on the left show the mean ± SE. Orange lines tobacco grown full sunlight and blue lines shade. (n = 150).