篇名 | Growth Response of Spathiphyllum ‘Sensation’ and Dracaena Sanderiana ‘Celica’ to Iron Concentration |
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卷期 | 52:4 |
並列篇名 | 白鶴芋‘綠巨人’與黃金萬年竹在不同鐵濃度下之生長反應 |
作者 | 林怡如 、 葉德銘 |
頁次 | 433-439 |
關鍵字 | Iron deficiency 、 Foliage plants 、 Dracaena sanderiana 、 Spathiphyllum 、 缺鐵 、 萬年竹 、 白鶴芋 、 觀葉植物 |
出刊日期 | 200612 |
以含0,0.2,0.4,0.6,7.8或15 µM Fe-EDTA之1/4 Hoagland修正水耕養液栽培白鶴芋‘綠巨人’,與黃金萬年竹,經345天後調查並比較其生長。結果顯示:缺鐵會減少白鶴芋‘綠巨人’之枝條與根乾重;但Fe-EDTA增至0.4 µM時,枝條與根乾重達最高。白鶴芋‘綠巨人’新葉葉脈間黃化之症狀,僅見於0或0.2 µM Fe-EDTA處理者。另栽培在含15 µM Fe-EDTA水耕液者,黃金萬年竹的枝條與根乾重達最高且黃化葉數最少。含低濃度Fe-EDTA之水耕液,增加白鶴芋‘綠巨人’的根乾重;但抑制黃金萬年竹之根生長。白鶴芋‘綠巨人’葉片鐵含量與水耕液之Fe-EDTA濃度呈曲線正關係;而黃金萬年竹的葉片鐵含量隨水耕液含Fe-EDTA濃度而直線上升。
Spathiphyllum Schott ‘Sensation’ and Dracaena sanderiana Sander ‘Celica’ were grown for 345 days in 1/4 Hoagland solution containing either 0, 0.2, 0.4, 0.6, 7.8 or 15 µM Fe-EDTA. For Spathiphyllum, shoot and root dry weights were reduced when plants were grown at 0 µM Fe-EDTA, greatest at 0.4 µM Fe-EDTA. Interveinal chlorosis was found only on younger leaves of plants at 0 or 0.2 µM Fe-EDTA. For Dracaena sanderiana ‘Celica’, maximum shoot and root dry weights, and minimum leaf chlorosis occurred at 15 µM Fe-EDTA. Spathiphyllum ‘Sensation’ root growth was stimulated at very low Fe concentrations, while that of Dracaena sanderiana ‘Celica’ was inhibited. Leaf Fe content of Spathiphyllum exhibited a quadratic response as Fe-EDTA increased, while leaf Fe content of Dracaena increased linearly with increasing Fe-EDTA from 0 to 15 µM.