Pharmacognostical Studies on the Magnolia Bark (I) : A Preliminary Study on the Annual Ring-like Structure in the Bark of Magnolia
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概要
- 論文の詳細を見る
The age of a tree is generally determined by the number of the annual rings in xylem. However, this approach is not applicable to the determination of the age of uncut trees and of barks. We worked on the age-estimation problems, of the barks of Magnolia, and obtaind the following conclusions. (1) The number of the layers of the phloem fibre bundles corresponds with the number of annual rings in the xylem. Therefore, they may be regarded as the "annual ring-like structure" in the bark. (2) The annual rings in the xylem are observed more distinctly on the south side of the trunk of a tree, while the "annual ring-like structure" of the bark is distinctly evident on the north side. (3) The thickness of Magnolia barks varies from species to species, whereas the number of the layers of the fibre bundles is the same in all the barks of the same ages.
- 日本生薬学会の論文
- 1988-09-20
著者
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KOBAYASHI Hiroaki
Tokyo University of Marine Science and Technology
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SASHIDA Yutaka
Tokyo College of Pharmacy
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Shimomura Hiroko
Tokyo College of Pharmacy
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Shimomura H
Tokyo Univ. Pharmacy And Life Sci. Tokyo Jpn
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Shimomura Hiroko
東京薬科大学
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ZHAO ZHONGZHEN
Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medicine
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TOKUMOTO HIROKO
Tokyo College of Pharmacy
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Tokumoto H
Tokyo College Of Pharmacy
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KOBAYASHI HIROAKI
Tokyo College of Pharmacy
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