| 3种独蒜兰属植物的光合特性 |
| |
| 引用本文： | 沈立明,戴中武,钟惠,代晓雨,翟俊文,吴沙沙.3种独蒜兰属植物的光合特性[J].热带作物学报,2021,42(5):1355-1360. |
| |
| 作者姓名： | 沈立明 戴中武 钟惠 代晓雨 翟俊文 吴沙沙 |
| |
| 作者单位： | 1.福建农林大学园林学院,福建福州 3500022.兰科植物保护与利用国家林业草原局重点实验室,福建福州 350002 |
| |
| 基金项目： | 福建农林大学艺术学院、园林学院(合署)学科专业建设项目(YSYL-bdpy-1);国家林草局2020年珍稀濒危物种调查监管与行业规范项目(2020073001);福建省自然科学基金项目(2019J01410) |
| |
| 摘 要： | 为探明独蒜兰属植物在光合生理方面的差异,本研究以云南独蒜兰（Pleione yunnanensis）、美丽独蒜兰（P. pleionoides）和流苏独蒜兰（Pleione barbarae）为材料,测定其叶片的光响应曲线、CO2响应曲线和叶绿素含量（SPAD）,探究其光合特性。结果表明：3种独蒜兰属植物均具有较强的耐阴性,且植株叶片SPAD值的高低与其光合速率有相关性。3种独蒜兰属植物之间的光补偿点（LCP）、光饱和点（LSP）、暗呼吸速率（Rd）、初始量子效率（a）、光呼吸速率（Rp）和CO2饱和点（CSP）均无显著差异。云南独蒜兰光合作用对较低浓度的CO2利用率高,更能适应低CO2浓度的环境;美丽独蒜兰表现出对光的适应范围较广,但在光合速率增加时所需的CO2浓度较高;而流苏独蒜兰对强光较敏感,易出现光抑制现象。此外,CO2的供应可能是影响其光合速率的主要因素之一,在生产栽培中注意遮荫,适当增加CO2浓度对3种独蒜兰属植物的光合作用有利。
|
| 关 键 词： | 独蒜兰属 光合特性 叶绿素含量 耐阴性 光抑制 |
| 收稿时间： | 2020-07-03 |
Photosynthesis Characteristics of Three Pleione Species |
| |
| SHEN Liming,DAI Zhongwu,ZHONG Hui,DAI Xiaoyu,ZHAI Junwen,WU Shasha.Photosynthesis Characteristics of Three Pleione Species[J].Chinese Journal of Tropical Crops,2021,42(5):1355-1360. |
| |
| Authors: | SHEN Liming DAI Zhongwu ZHONG Hui DAI Xiaoyu ZHAI Junwen WU Shasha |
| |
| Institution: | 1. College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China2. Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, Fuzhou, Fujian 350002, China |
| |
| Abstract: | The light response curve, CO2 response curve, and chlorophyll content of Pleione yunnanensis, P. pleionoides, and Pleione barbarae were measured, to study the photosynthetic characteristics and provide a certain theoretical basis for Pleione cultivation. Results showed that all the three species had shade resistance, and the SPAD value of plant leaves was related to its photosynthetic rate. The light compensation point (LCP), light saturation point (LSP), dark respiration rate (Rd), initial quantum efficiency (a), rate of photorespiration (Rp) and CO2 saturation point (CSP) among the three species were not significantly different. Photosynthesis of P. yunnanensis had a high utilization rate of lower CO2 and was more suitable for the environment of low CO2 concentration. P. pleionoides showed a wide range of light adaptation, but it required a higher concentration of CO2 to increase photosynthetic rate. Pleione barbarae was more sensitive to strong light and easy to occur light suppression phenomenon. Furthermore, the supply of CO2 may be one of the main factors affecting the increase in photosynthetic rate of plant leaves. To increase yield, shading is needed in cultivation, and appropriately increase the CO2 concentration will be beneficial to the photosynthesis of these three species. |
| |
| Keywords: | Pleione photosynthetic characteristics chlorophyll fluorescence parameters shade-endurance photoinhibition |
|
| 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 |
|
