At the same light intensity, photosynthesis efficiency changes
with the wavelength: it is known that most plant crops reach a
major peak in the red region and a relatively lower peak in the blue,
with a typical pattern closely related with the absorption spectra
of photosynthetic pigments (Atwell et al., 1999). However, current
knowledge about spectral dependence of photosynthesis in
higher plants is mainly based on early observations on arable or
vegetable crops (Balegh and Biddulph, 1970; McCree, 1972; Inada,