Anatomical Characteristics of Artificially Induced Tension Wood in Seedlings of Honduras Mahogany

大葉桃花心木苗木人為誘導的抗張材之解剖特徵

蔡馨竹(Ching-Ju Tsai) ； 簡慶德(Ching-Te Chien) ； 李金梅(Chin-Mei Lee) ； 陳香君(Shiang-Jiuun Chen) ； 黃玲瓏(Ling-Long Kuo-Huang)

《台灣林業科學》 21卷2期 (2006/06) Pp. 147-154

https://doi.org/10.7075/TJFS.200606.0147

摘要

本研究中，大葉桃花心木(Swietenia macrophylla King)苗木經4與10個月水平橫放生長，以誘導反應材形成。膠質纖維主要產生在主幹上側的反應材組織中，且水平橫放處理時間越久，膠質纖維形成量越多。相較於反應材，對應材組織中含較高比例的縱向薄壁細胞及澱粉粒。這些解剖特徵顯示反應材形成層與對應材形成層具有不同的調節機制，縱向薄壁細胞中所儲藏的澱粉可扮演著主動或被動的生化調節功能與養分供需運輸角色。

關鍵字

膠質纖維 ； 大葉桃花心木 ； 反應材 ； 澱粉粒

並列摘要

Seedlings of Honduras mahogany (Swietenia macrophylla King) were laid horizontally for 4 and 10 mo to induce reaction wood. Gelatinous fibers occurred on the upper side of the trunks of the treated seedlings, and the longer the treatment, the higher the extent of the gelatinous fibers. More-abundant axial parenchymatous cells and starch grains were observed in the opposite wood than in the reaction wood. Such anatomical characteristics suggest that there are distinct patterns of regulation between the cambium zones of the reaction wood and opposite wood. Starch storage in axial parenchymatous cells may play a role in the active or passive processes involved in the biochemical regulation and source-to-sink transportation.

並列關鍵字

gelatinous fibers ； Honduras mahogany ； reaction wood ； starch grains ； Swietenia macrophylla