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頁籤選單縮合
題名 | 茶樹免除鋁的營養生理障礙之研究=Avoidance Mechanisms of Physiological Interference of Aluminum in Tea Plant |
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作者姓名(中文) | 梁致遠; 顏江河; 林鴻淇; | 書刊名 | 中國農業化學會誌 |
卷期 | 35:1 1997.02[民86.02] |
頁次 | 頁61-69 |
分類號 | 434.81 |
關鍵詞 | 有機鋁複合物; 鋁分佈; 電子顯微鏡; X射線微量分析; 冷凍乾燥; Organo-aluminum complex; Aluminum distribution; Electronmicroscope; X-ray microanalysis; Freeze drying; |
語文 | 中文(Chinese) |
中文摘要 | 木質部汁液是輸送金屬化合物的介質,收集茶樹莖部的木質部汁液,以離子層析 儀分析木質部汁液中的鋁物種。以不同比例的含鋁水耕液栽培茶樹,採取茶樹成熟葉片,以 組織化學方法、 冷凍乾燥、電子顯微鏡及 X 射線微量分析法討論葉片中金屬元素的微量分 佈及葉片中鋁的組成成分。結果顯示,茶樹木質部汁液的 pH 是 4.7,其中有機鋁複合物是 一重要的鋁物種,而鋁離子僅佔小部分。 茶樹成熟葉片的含鋁量超過 2,000 μ g/g。茶樹 吸收的鋁,經木質部運送至蒸散流末端累積起來,累積的部位主要是茶樹葉片的上、下表皮 細胞壁。在高鋁含量的培養液中,茶樹成熟葉片之表皮細胞壁上之鋁含量遠大於鈣,但低鋁 含量的培養液中則相反,表皮細胞壁上的鋁含量低於鈣,顯示在表皮細胞壁上的鋁能和鈣競 爭細胞壁的官能團,進而在表皮細胞壁上堆積。 |
英文摘要 | The fluid xylem is a medium for forming and transporting metal complexes. Tea plant (Camellia sinensis L. cv. T.T.E. No.12) was cultured in an extremely acid hydroponic solution to study the aluminum complexes of xylem sap by ion chromatography and the distribution of aluminum in mature leaves by X-ray microanalysis using an electron microscope and a freeze drying method. The results showed that the pH of xylem sap was 4.7, that the organo-aluminum complex was significant among the alumimum species, and that the aluminum ion was insignificant in the xylem sap. The content of aluminum in the mature leaves of the tea plant was more than 2,000 μ g/g. Aluminum is transported to the leaf via xylem and accumulates in the leaf gradually. Aluminum accumulates densely accumulated in the cell wall of the epidermis. The content of aluminum in the cell wall of the epidermis of mature leaves was greater than that of calcium for the high aluminum hydroponic solution, but the opposite results were found for the low aluminum hydroponic solution. Aluminum and calcium could compete with the function groups and aluminum could accumulate in the leaves. |
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