[1]潘辉,李一凡,劳鑫苑.不同光响应模型在银杏中的应用比较研究[J].江苏林业科技,2025,52(06):6-10.[doi:10.3969/j.issn.1001-7380.2025.06.002]
　Pan Hui,Li Yifan,Lao Xinyuan.Comparison of different light-response curve models in Ginkgo biloba[J].Journal of Jiangsu Forestry Science &Technology,2025,52(06):6-10.[doi:10.3969/j.issn.1001-7380.2025.06.002]
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不同光响应模型在银杏中的应用比较研究

《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第52卷
期数:
2025年06期
页码:
6-10
栏目:
试验研究
出版日期:
2025-12-31

文章信息/Info

Title:
Comparison of different light-response curve models in Ginkgo biloba
文章编号:
1001-7380（2025）06-0006-05
作者:
潘辉1;  李一凡2;  劳鑫苑2
1.江苏司法警官职业学院公共基础教学部，江苏 南京 210031；
2.南京林业大学生命科学学院，江苏 南京 210037
Author(s):
Pan Hui1;  Li Yifan2;  Lao Xinyuan2
1. Department of Public Basic Courses, Jiangsu Judicial Police Officer College,Nanjing 210031, China；
2. College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China
关键词:
银杏; 光响应曲线; 干旱; Pmax; LCP; LSP
Keywords:
Ginkgo biloba; Light-response curve; Drought; Pmax; LCP; LSP
分类号:
Q945.11；S792.95
DOI:
10.3969/j.issn.1001-7380.2025.06.002
文献标志码:
A
摘要:
为探讨抛物线、直角双曲线、直角双曲线修正式和非直角双曲线共4种光响应曲线模型在银杏叶片中的适用性，并分析干旱胁迫对银杏光合作用的影响。以3年生银杏幼苗为材料，在自然和干旱处理条件下，利用Li-6400光合作用测定系统获得不同光照强度下的光合速率，采用SPSS软件对4种模型进行拟合分析，计算光合参数（如Pmax，LCP，LSP等），比较模型拟合效果及参数变化。结果显示，抛物线和非直角双曲线模型拟合的R2值较高（接近0.9），对银杏光响应曲线拟合效果以抛物线模型最为适宜，直角双曲线和直角双曲线修正式R2值较低，且计算出的Pmax，LCP，LSP与实测值偏差较大，不宜作为银杏光响应模型；干旱条件下，LCP显著升高、Pmax明显下降，同时暗呼吸速率（Rd）变化表明干旱抑制了银杏的光合作用。该研究结果为银杏栽培和逆境生理研究提供了科学模型。
Abstract:
In order to investigate the applicability of such four light-response curve models as parabolic model, rectangular hyperbola model, modified rectangular hyperbola model and the non-rectangular hyperbola model in Ginkgo biloba leaves, and to analyze the effect of drought stress on the photosynthesis, the three-year-old seedlings were taken as experimental material under both natural and drought conditions, photosynthetic rates under different light intensities were measured with the Li-6400 photosynthesis measurement system. The SPSS software was employed to fit the four models, calculate photosynthetic parameters (such as Pmax, LCP, LSP, etc.), and compare the model fitting performance and parameter variations. The results showed that the parabolic and non-rectangular hyperbola models yielded higher R2 values (close to 0.9), providing better fits for the light-response curves compared with the other models, with the parabolic model being the most suitable. In contrast, the rectangular hyperbola and modified rectangular hyperbola models exhibited lower R2 values, and the calculated Pmax, LCP, and LSP deviated significantly from the measured values, making them unsuitable as photosynthetic models for G. biloba. Under drought conditions, LCP increased significantly while Pmax decreased markedly. Additionally, changes in the dark respiration rate (Rd) indicated that drought stress inhibited photosynthesis in G. biloba. This study concludes that the parabolic model is the most appropriate for simulating the light response curve of photosynthesis in G. biloba. Drought stress suppresses photosynthesis by altering key parameters. The findings provide a methodological basis for G. biloba cultivation and stress physiology research.

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备注/Memo

备注/Memo:
收稿日期：2025-09-21;修回日期：2025-10-12
基金项目：国家自然科学基金“银杏雌雄株对干旱胁迫的光合特性和叶绿体蛋白响应机制”（31300572）
作者简介：潘辉（1981- ），男，江苏溧阳人，助教，大学本科毕业。从事生物数学和生态模型方面的研究。
更新日期/Last Update: 2026-04-07