ラジノクローバにおける ^<14>CO_2 の同化と同化産物の転流に関する実験 : II. 植物体各部における ^<14>C-同化産物の形および分布

概要

論文の詳細を見る
Whole plants of Ladino clover were exposed in light to ^<14>CO_2 for 4 1/2 hours and distribution of ^<14>C in ethanol, acid, alkali-soluble fractions and residue immediately after and 4 days after ^<14>CO_2 treatment were investigated. Young leaves assimilate actively and retain considerable parts of their assimilates as a structural component, i.e., alkali-soluble fraction and residue (mainly protein and cellulose). The biosynthesis in these fractons seemes to be progressing rapidly, and even immediately after ^<14>CO_2 treatment ^<14>C was widely distributed in the structural fractions of young parts of plant. Older leaves use greater parts of their assimilates by respiration and send them to other parts of plant. therefore ^<14>C activity decreased significantly from immediately after ^<14>CO_2 treatment to 4 days after treatment. ^<14>C-assimilates were translocated and accumulated as a structural or reserved fraction, namely, acid and alkali-soluble fractions and residue to young parts of stolon near growing points. ^<14>C-assimilates in older part of stolon immediately after ^<14>CO_2 treatment were mainly in ethanol soluble fraction. Four days after treatment ^<14>C activity decreased significantly and ^<14>C was distributed in reserved and structural fractions, but in small amounts. Young parts of petiole, root, lateral buds and growing points of stolon were important sink of assimilates in Ladino clover.
日本作物学会の論文
1966-12-25