<研究報告>食物切り枝における組織粉末比重及び組織圧搾汁濃度の変化について

概要

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1. Daily variations in the specific gravity of tissue powder and the concentration of sap expressed from tissues of plants with and without root system were measured, by means of Glycin Merill and Solidago serotina Ait. 2. The specific gravity of tissue powder decreased in both leaves and stems with time, and these decreasing degrees were larger in the upper part and less in the lower part in the cutting as compared with intact plant. 3. The concentration of expressed sap increased in both leaves and stems, especially in a great degree in lower stem of the cutting. This fact showed a reservation of body substances in lower stem of the cutting. 4. The increase of the concentration of sap had a tendency to be larger when the material was iput in glucose or KC1 solution than in water. This tendency was more remarkable in the cutting than in intact plant, and was porticularly strong in glucose solutions. 5. On the cuttings of S. serotina the concentrations of expressed sap in leaves and stems increased with increasing concentration of external solutions. 6. It seems obvious from these results that plant cuttings not only wasted the physiological condition in the leaves with time, but also reserved body substances in lower stems so as to be advantageous for root initiation.
福岡女子大学の論文
1963-03-31