the photosynthetic co2-fixation rates , chlorophyll content , chloroplast ultrastructure and other leaf characteristics ( e.g . variable fluorescence , stomata density , soluble carbohydrate content ) were studied in a comparative way in sun and shade leaves of beech ( fagus sylvatica ) and in high-light and low-light seedlings .
C0031764
photosynthetic
C0007004
carbohydrate