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題 名 | 構樹苗木對光度之生理反應=Physiological Responses to Light Intensities of Broussonetia Papyrifera Seedlings |
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作 者 | 陳忠義; 廖天賜; | 書刊名 | 林業研究季刊 |
卷 期 | 29:3 2007.09[民96.09] |
頁 次 | 頁15-25 |
分類號 | 436.253 |
關鍵詞 | 構樹; 光度; 耐陰性; 葉綠素螢光; Broussonetia papyrifera; Light intensity; Shade-tolerant; Chlorophyll fluorescence; |
語 文 | 中文(Chinese) |
中文摘要 | 構樹廣泛分布於臺灣中低海拔地區,其生育地之光環境變異極大。為了解其對不同光度的適應機制,本研究以不同光度處理其苗木,探討其形態及生理反應。試驗結果顯示,構樹苗木在低光下不但形態生長良好,且具有許多耐陰種之特徵,如比葉面積大(323.9□□)、光補償點低(6.67μmol□□)、葉綠素a/b比值小(2.46)等等,且在高光照射後有快速調適的保護能力。而生長在高光下的苗木則有良好的光合能力與消散機制,因此對光度的適應範圍很廣,分布可從日強烈之空曠地以至於鬱閉的防風林下。 |
英文摘要 | Broussonetia papyrifera is an expansive distribution tree species from medium to low elevation of Taiwan. The habitat of B. papyrifera has extreme differentiation in light environments. In order to understanding acclimation mechanism of B. papyrifera to dfferent light intensity, we set various light treatment and observed the responses of phenotype and physiology. Results revealed that, B. papyrifera had sell performance in shade and shown several characteristics such as high specific leaf area (323.9□□), and low light compensation point (6.67 ㄩmol□□), cholorphyll a/b ration (2.46) of shade-tolerance species. B. papyrifera also shown the ability of fast recovery after irradiated by high light. Therefore, B. papyrifera which grown in high light environment shown the well photosynthetic capacity and mechanism of dissipation. So B. papyrifera acclimated broadly to different light environment and distributed from sunlit openness area to understory of windbreak forest. |
本系統中英文摘要資訊取自各篇刊載內容。