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題 名 | 低海拔闊葉樹種淹鹽水後之症狀及形態適應=The Symptoms and Morphological Adaptation of Broad-Leaved Trees Distributed in Low Elevation of Taiwan after Salt-water Flooding |
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作 者 | 郭幸榮; 劉佳瑜; 許世宏; | 書刊名 | 國立臺灣大學農學院實驗林研究報告 |
卷 期 | 13:3=225 1999.09[民88.09] |
頁 次 | 頁211-223 |
分類號 | 436.18 |
關鍵詞 | 耐淹水性; 形態適應; 耐鹽性; 鹽度; Flood tolerance; Morphological adaptation; Salt tolerance; Salinity; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究以臺灣低海拔闊葉樹種木麻黃、欖仁、瓊崖海棠、水黃皮、大葉山欖、朴 樹、臺灣欒樹及樹青之苗木為對象, 以 0、0.7、1.4、2.1% 之鹽水分別淹浸,探討這些樹 種的耐淹水及耐淹鹽水能力。苗木淹鹽水之後可能出現缺水症狀及隨後出現鹽害症狀,嚴重 性視鹽分濃度及樹種而異。耐淹水之樹種,苗木莖基會生長不定根、皮孔、及膨大等通氣組 織而改善通氣及吸水能力,以適應淹水逆境,此種反應隨鹽度之上升而下降。耐淹水能力樹 種顯示也具耐淹鹽水能力, 如木麻黃及欖仁以 0% 或 0.7% 鹽水淹浸 110 日後皆可維持 100% 的存活率。 綜合評估通氣組織、受害症狀,淹浸的時間、成活率等反應,獲悉木麻黃 及欖仁耐淹鹽水能力最佳,其次為瓊崖海棠及水黃皮,樹青、大葉山欖、朴樹及臺灣欒樹為 較劣的樹種。 |
英文摘要 | Eight broad-leaved species, namely, Casuarina equisetifolia, Terminalia catappa, Callophyllum inophyllum, Pongamia pinnata, Palaquium formosana, Celtis sinensis, Koelreuteria formosana, Planchonella abovata, were flooded with 0, 0.7, 1.4, and 2.1% salt water, respectively, to observe flooding injury and to evaluate their tolerance. Results indicated that the earliest symptom of water deficit after treatment appeared earlier then Cl �� and Na �� injury which were varied greatly due to tree species and salinity. Flooding did induced formation of adventitious root and hypertrophied lenticel and swelling at stem base of the seedlings of flood tolerant species. The flood adaptability was decreased as salinity increased. Results also revealed that the correlation between flood tolerance and flood salt-water tolerance was very good, such as Casuarina equisetifolia and Terminalia catappa flooded with either 0% or 0.7% salt water for 110 days still maintained 100% survival rate. Based on formation of hypertrophied tissues, injury symptoms after flooding, flooding duration, and survival rate, flood salt-water tolerance was ranked. Casuarina equisetifolia and Terminalia catappa were the best tolerant group, Callophyllum inophyllum and Pongamia pinnata were the mid-tolerant group, and the others were the poorest ones. |
本系統中英文摘要資訊取自各篇刊載內容。