甘藷におけるSucrose-C^<14>の転流・蓄積におよぼす光の強さの影響

概要

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The influence of light intensity on the translocation of sucrose-C^<14> in the sweet potato plant, Ipomoea Batatus LAM., has been studied by means of Isotope tracer technique. Sucrose-C^<14> was introduced into a leaf and then the plants were exposed to light of different intensities (40,000, 12, 100, and 2,800 Lux at noon). After 12 hours the distribution of C^<14> throughout the plants was determined by means of radioautograph. Translocation was mainly downward from the treated leaf to root. The translocation of C^<14> into root increased progressively with succesively lower light intensity and 70 % of the total C^<14> was found in root under the lowest light intensity. The rate of C^<14> distribution to leaves was decreased in parallel to the lowering of light intensity.
1962-12-30