Abstract
Rice plant raised by means of water culture, was deprived of nitrogen for a week from culture solution and resupplied with nitrogen.Resupplied nitrogen was rapidly synthesised to protein through amid-nitrogen. Other plant was kept without sun light to exhaust stored carbohydrate, after one week absorbed nitrogen was not synthesised to protein but accumulate as nonprotein principally amide-nitrogen.So we conclude rate of nitrogen assimilation depends upon the accumulation of carbohydrate, namely the activity of photosynthesis.
