Absorption and Assimilation of Inorganic Nitrogen from Different Sources by Storage Root-Tissue

Abstract

Furthermore, with both sources changes in the content of amide and amino-N were negligible in radish tissues of both series. In contrast to radish, carrot tissues showed marked increases in the two fractions. The increase of these fractions in sweet potato tuber tissues was much lower. The marked contrast in nitrogenous composition in the three different plant materials fed with ammonium and nitrate salts separately indicated that the actual course of protein metabolism is most probably dependent on the source of nitrogen utilized.