中国农业科技导报 ›› 2024, Vol. 26 ›› Issue (4): 58-66.DOI: 10.13304/j.nykjdb.2022.0915

• 生物技术 生命科学 • 上一篇    下一篇

不同山葡萄品种CO2响应模型拟合及评价

潘越1(), 王宝庆2, 王季姣2,3,4, 马勇2,3,4, 李亚兰4()   

  1. 1.新疆林业科学院园林绿化研究所,乌鲁木齐 830000
    2.新疆阿克苏森林生态系统国家定位观测研究站,新疆 阿克苏 843100
    3.新疆林业科学院佳木国家重点林木良种基地,新疆 阿克苏 843100
    4.新疆农业大学林学与风景园林学院,乌鲁木齐 830052
  • 收稿日期:2022-10-26 接受日期:2022-12-26 出版日期:2024-04-15 发布日期:2024-04-23
  • 通讯作者: 李亚兰
  • 作者简介:潘越 E-mail: 18690187637@163.com
  • 基金资助:
    新疆维吾尔自治区重点研发计划项目(2020B02045-2-3)

CO2 Response Model Fitting and Evaluation of Vitis amurensis

Yue PAN1(), Baoqing WANG2, Jijiao WANG2,3,4, Yong MA2,3,4, Yalan LI4()   

  1. 1.Research Institute of Landscaping,Xinjiang Academy of Forestry,Urumqi 830063,China
    2.Akesu National Observation and Research Station of Chinese Forest Ecosystem,Xinjiang Aksu 843100,China
    3.Jiamu State Key Forest Seed Breeding Bases,Xinjiang Academy of Forestry,Xinjiang Aksu 843100,China
    4.College of Forestry and Horticulture,Xinjiang Agricultural University,Urumqi 830052,China
  • Received:2022-10-26 Accepted:2022-12-26 Online:2024-04-15 Published:2024-04-23
  • Contact: Yalan LI

摘要:

为探索不同山葡萄品种叶片CO2响应特征差异,以5 a生山葡萄‘北冰红’‘北国红’‘双红’和‘雪兰红’为试材,采用Li-6400便携式光合仪,测定果实膨大期山葡萄叶片光合-二氧化碳响应曲线(photosynthetic CO2 response curve,Pn-Ci)以及胞间CO2浓度(intercellular CO2 concentration,Ci)、气孔导度(stomatal conductance,Gs)、水分利用率(water use efficiency,WUE)和蒸腾速率(transpiration rate,Tr)等气体交换参数,基于直角双曲线模型、Michaelis-Menten模型和直角双曲线修正模型3种模型拟合山葡萄叶片Pn-Ci响应曲线。结果表明,直角双曲线修正模型拟合的山葡萄Pn-Ci响应曲线,其拟合参数与实测值最为接近,可直接计算CO2饱和点(CO2 saturation point,CSP)。随大气CO2浓度(atmospheric CO2 concentration,Ca)的增加,4个山葡萄品种Ci呈线性递增趋势;GsTr总体呈先升后降趋势;WUE先降后升,呈“U”型变化趋势。主成分分析提取出2个主成分,累计贡献率达84.613%。综合评价‘雪兰红’得分最高,光能转化利用率最高,在低Ca环境下的适应性最佳;‘双红’在不同Ca水平下均可保持较高光合效率,排名第2。综上所述,直角双曲线修正模型拟合山葡萄叶片Pn-Ci响应曲线效果最优。

关键词: 山葡萄, CO2响应模型, 隶属函数, 主成分分析

Abstract:

To explore the effect of Vitis amurensis Rupr. leaf on CO2 response characteristics, 4 varieties of 5 a Vitis amurensis Rupr. were as materials, including ‘Beibinghong’ ‘Beiguohong’ ‘Shuanghong’ and ‘Xuelanhong’. The intercellular CO2 concentration (Ci), stomatal conductance (Gs), water utilization rate (WUE),transpiration rate (Tr) were determined including using Li-6400 portable photosynthesis system. The photosynthetic CO2 response curve (Pn-Ci) of Vitis amurensis Rupr. leaf was fitted by rectangular hyperbola model, Michaelis-Menten model, modified rectangular hyperbola model. The results showed that, the fitting values of photosynthetic parameters were close to measured values by the modified rectangular hyperbola models, which could directly calculate the CO2 saturation point (CSP). With the increase of atmospheric CO2 concentration (Ca), Ci of 4 varieties showed a linear increasing trend, Gs and Tr generally increased first and then decreased, WUE decreased first and then increased with ‘U’ trend. The principal component analysis extracted 2 principal components, which the cumulative variance contribution rate reached 84.613%. The score of ‘Xuelanhong’ was the highest in the comprehensive evaluation, which had the best adaptability in low Ca environment, and conversion rate of light energy was the highest. ‘Shuanghong’ was second, which could maintain high photosynthetic efficiency at different concentrations of Ca. In conclusion, the modified rectangular hyperbola models was the best on fitted the Pn-Ci response curve of Vitis amurensis Rupr.

Key words: Vitis amurensis Rupr., CO2 response model, subordinate function, principal component analysis (PCA)

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