光線、溫度、水份等因子對楓香異戊二烯生成之研究

Light, Temperature and Water Effect Isoprene Emission of Liquidamber Formosana

彭永良(Yung-Liang Peng) ； 孫岩章(En-Jang Sun) ； 張育森(Yu-Sen Chang)

《環境保護》 31卷1期 (2008/06) Pp. 10-20

https://doi.org/10.30017/EP.200806.0002

摘要

本研究以楓香為材料，探討光線、溫度、水份等因子對異戊二烯生成之影響。隨著遮光程度（遮光98％、94％、87％、72％、57％及0％）的減少，異戊二烯釋放量有逐漸增加的趨勢，至全日照（遮光0％）時有異戊二烯最高的釋放量（92.18μg．g^(-1)．h^(-1)）；日夜溫25/20℃時釋放量較少，30/25℃明顯上升，尤其35/30℃時有最高的異戊二烯的釋放量（28.65μg．g^(-1)．h^(-1)）；缺水時異戊二烯是放量明顯上升，在第五天有最高的釋放量（36.68μg．g^(-1)．h^(-1)），爾後逐漸降低；節位方面以靠近中段的6-10節有最大的釋放量（10.00μg．g^(-1)．h^(-1)），其次為基部的11-15節（8.00μg．g^(-1)．h^(-1)），由枝條頂端算起1-5節的釋放量為最低（4.61μg．g^(-1)．h^(-1)）。

關鍵字

異戊二烯

並列摘要

To go step further, treat of light, temperature and water effect isoprene emission of Liquidamber formosana. The shading degree lower to 0% had the highest isoprene emission (92.18μg．g^(-1)．h^(-1)) and increased emission with shading degree reduction. During day/night temperature treatment , resulted few isoprene emission at 25/20°C treatment had lower isoprene emission and significant increased emission during 30/25~35/30°C, especially at 35/30°C (28.65μg．g^(-1)．h^(-1)).Isoprene emission in plants increased after water deficiency and the highest emission (36.68μg．g^(-1)．h^(-1)) appearance at the fifth day, but decreased emission at the sixth day. Measure isoprene emission on potiation of plants, the highest emission (10μg．g^(-1)．h^(-1))were on 6-10 nodes of medial shoot, on 11-16 nodes of basic shoots has 8.0μg．g^(-1)．h^(-1) and emission on top of shoot were lowest.

並列關鍵字

Isoprene