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題 名 | No Effect of Host Tree Species on the Physiology of the Epiphytic Orchid Bulbophyllum Japonicum in a Subtropical Rainforest in Northeastern Taiwan=臺灣東北部亞熱帶雨林附生蘭科植物(Bulbophyllum Japonicum)之生理無宿主效應 |
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作 者 | 林登秋; 徐嘉君; 林信輝; | 書刊名 | 臺灣林業科學 |
卷 期 | 22:3 2007.09[民96.09] |
頁 次 | 頁241-251 |
分類號 | 436.1 |
關鍵詞 | 景天酸代謝; 附生植物; 宿住專一性; 蘭科; 亞熱帶雨林; Crassulacean acid metabolism; Epiphyte; Host specificity; Orchid; Subtropical rainforest; |
語 文 | 英文(English) |
中文摘要 | 本研究於臺灣東北部亞熱帶雨林測量降生於三種不同宿主的日本捲瓣蘭(Bulbophyllum japonicum)之葉綠素濃度、景姍?代謝變動以及葉綠素螢光參數。所測量的項目在不同宿主的個體間皆無顯著差異,因此雖然這些宿主植物的葉形、樹皮特徵以及幹流水的營養組成有可觀的差異,這差異並未對此降生蘭的生理產生很大的影響。這樣的結果可能反應此生長緩慢、耐陰之蘭科植物其低生長速率以及低營養需求。本研究的發現有助於解釋此附生置物,可能也包括它許多附生植物,缺乏宿主專一性的現象。 |
英文摘要 | Chlorophyll concentrations, Crassulacean acid metabolism (CAM) acid fluctuations, and chlorophyll fluorescence parameters were measured in individuals of the epiphytic orchid Bulbophyllum japonicum growing on 3 different host tree species in a subtropical rainforest in northeastern Taiwan. No differences in any of the physiological measures were found. Thus, although the host tree species vary considerably in leaf morphology, bark characteristics, and elemental composition of stemflow water, such differences did not substantially impact the physiology of this epiphytic orchid. These results may reflect the slow growth rates and minimal nutrient requirements of this slow-growing, shade-adapted orchid. The findings of this study help explain the lack of host specificity in this epiphyte and perhaps in many other species. |
本系統中英文摘要資訊取自各篇刊載內容。