コナラの木部に貯えられた澱粉の季節的変化
スポンサーリンク
概要
- 論文の詳細を見る
The author studied on the seasonal change of reserved starch in the xylem parenchyma of Quercus serrata THUNB. (tree age : 6-15), which were planted in Kamabuchi district of Yamagata Prefecture. Samples were taken from main roots, trunks (at the height of 0.2 m and 1.2 m from ground level), tops, and the lowest branches every 10 days from 10th September, 1951 to 2nd September, 1952.Free hand sections (tangential direction) were made in thickness of 30〜40 μ, and were observed under the microscope. Quantity of reserved starch in cells of the xylem parenchyma was expressed by Arabic numerals from 0 to 10.The results obtained were as follows : -(1) At every parts examined, the resrved starch decreased in June after the opening of buds and also in August throughout the "lam-mas growth period".The decrease of the reserved starch in June was remarkable at every parts examined but in August was not.(2) The maximum of reserved starch was observed at every parts examined in early winter.(3) But only in tops, the reserved starch decreased remarkably in the winter and then increased in the early spring before the opening of buds.
- 一般社団法人日本森林学会の論文
- 1953-06-25