Studies on the Distribution of $P^{32}$ in Radish

적장이십일대근(赤長二十日大根)에 있어서 $P^{32}$ 의 분포(分布)에 관(關)하여

Distribution of $P^{32}$ in a pot-grown plant of the radish was studied by means of fertilization with phospbate labeled with $P^{32}$ followed by autoradiography of the dried parts. (1) An accumulation of $P^{32}$ occurs in the growth point, the root of hair, the younger leaves and the top of leaves in the radish similary other plants. (2) In the yellow leaves of the radish it was counted too weak by monitor. (3) $P^{32}$ absorbed by the root in radish was transported through the xylem of the radishtissue.