Carbon isotope ratios of respired CO2from castor bean, corn, peanut, pea, radish, squash, sunflower and wheat seedlings

摘要

During the first month after germination peanut and sunflower seedlings exhibit a significant shift in the13C/12C ratios of respired CO2indicating thatcarbohydrate gives way to lipid as the respiratory substrate. Other species (castor bean, corn,pea, radish, squash and wheat) show no change in the13C/12C ratio