Comparative Photosynthetic Action Spectra of One Deciduous and Four Coniferous Tree Species as Related to Photorespiration and Pigment Complements '

Comparative isoenergetic action spectra of net photosynthesis for intact, current year foliage offive tree species were determined from 400 to 710 nm by CO2 exchange analysis. The blue (400 to 500 nm) peak of net photosynthetic activity for the green broadleaves of red alder (Alnus rubra Bong.) was reduced to a plateau for the green needle-leaves of Douglas… CONTINUE READING