Abstract
Assimilation of simple carbohydrate by root uptake was examined by cultivation of radish seedling in a solution containing glucose labeled with 14C. Activity in plant increased rapidly and showed 10 to 30 percent of that in the culture solution within 1 h. Activity in plant, however, did not exceed that in the solution after 11 days cultivation, indicating assimilation of glucose by root uptake is negligible under photosynthesis is active.
