THE UPTAKE OF IODINE BY HIGHER PLANTS

摘要

Results of tracer studies on the uptake, of iodine by plants from soil and nutrient solution are reported as a function of pH, plant species, and iodine concentration. Iodine is readily absorbed from both soil and nutrient solution. The absorption is approximately four times greater at pH 4 than at pH 7. The four plant species tested differed in their ability to concentrate the iodine, but all were within a tenfold variation. Instead of lowering the percentage of radioiodine absorbed, the addition of carrier increases the percentage of iodine that is absorbed into the plant.