| 5个彩叶树种光响应曲线特性研究 |
| |
| 引用本文： | 张迎辉,王雪梅,连巧霞.5个彩叶树种光响应曲线特性研究[J].热带作物学报,2019,40(9):1737-1741. |
| |
| 作者姓名： | 张迎辉 王雪梅 连巧霞 |
| |
| 作者单位： | 1. 福建农业职业技术学院,福建福州 3500072. 福州植物园,福建福州 3500123. 福建生态工程职业技术学校,福建福州 350007 |
| |
| 基金项目： | 福建省林业科技项目(闽林科[2017]函3号);福建省林业厅花卉苗木品种引进与研发创新项目 |
| |
| 摘 要： | 以福建省常见的5个乡土彩叶树种为研究对象,利用Li-6400便携式光合作用测定系统测定其不同光合参数,并绘制相应光响应曲线。结果表明：（1）在低光强条件下,各树种净光合速率（Pn）差异较小,随光强增大各树种表现出较大差异;（2）5个树种的气孔导度（Gs）随光强增大呈现2种变化趋势,檫木、山乌桕、野鸦椿总体呈上升趋势,而枫香树和无患子表现出先升后降并趋于平稳的变化趋势;蒸腾速率（Tr）的光响应曲线与Gs的光响应曲线变化趋势基本相同;（3）5个树种的胞间CO2浓度（Ci）总体呈先急速下降后趋于平稳的变化趋势,水分利用效率（WUE）随PAR的增加均呈先上升后下降的总体趋势;（4）5个树种的LCP范围为9.525~28.018 μmol/(m 2?s),LSP范围为592.303~1245.871 μmol/(m 2?s),均属于阳性植物;檫木和山乌桕的LCP、LSP及Pn max均相对较高,利用强光的能力更强;野鸦椿的LCP、LSP及Pn max均相对较低,对弱光的利用能力较强。
|
| 关 键 词： | 乡土彩叶树种 光合特性 光响应曲线 |
| 收稿时间： | 2019-02-18 |
Light Response Curve of Photosynthesis of Five Colored-leaf Trees |
| |
| ZHANG Yinghui,WANG Xuemei,LIAN Qiaoxia.Light Response Curve of Photosynthesis of Five Colored-leaf Trees[J].Chinese Journal of Tropical Crops,2019,40(9):1737-1741. |
| |
| Authors: | ZHANG Yinghui WANG Xuemei LIAN Qiaoxia |
| |
| Institution: | 1. Fujian Vocational College of Agriculture, Fuzhou, Fujian 350007, China2. Fuzhou Botanical Garden, Fuzhou, Fujian 350012, China3. Fujian Ecosystem Engineering Vocational School, Fuzhou, Fujian 350007, China |
| |
| Abstract: | Different photosynthetic parameters of five native colored-leaf trees in Fujian were determined using an Li-6400 portable photosynthesis system, and the light response curves were drawed. The results showed that at the beginning of light increase, differences in the photosynthetic rate (Pn) between colored-leaf trees were not distinct, however, with the increase in light intensity, great differences in Pn between colored-leaf trees appeared. The stomatal conductance (Gs) of the five colored-leaf trees showed two trends with the increase of light intensity. Sassafras tzumu, Sapium discolor and Euscaphis japonica showed an overall upward trend, while Liquidambar formosana and Sapindus mukorossi showed a first upward and then downward trend till to be stable. The light response curve of transpiration rate (Tr) was basically the same as that of Gs. The intercellular CO2 concentration (Ci) of the five colored-leaf trees decreased rapidly at first and then tended to be stable. The water use efficiency (WUE) increased first and then decreased with the increase of PAR. The LCP ranged from 9.525 μmol/(m 2·s) to 28.018 μmol/(m 2·s), and the LSP ranged from 592.303 μmol/(m 2·s) to 1245.871 μmol/(m 2·s). The five colored-leaf trees were light preferring plants. The ability to use high light for Sassafras tzumu and Sapium discolor was better than the other trees with a higher LCP, LSP and maximum net photosynthetic rate. The ability to use low light for Euscaphis japonica was better with a lower LCP, LSP and maximum net photosynthetic rate. |
| |
| Keywords: | native colored-leaf trees photosynthetic characteristic light response curve |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《热带作物学报》浏览原始摘要信息 |
| 点击此处可从《热带作物学报》下载免费的PDF全文 |
|
