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不同盐渍条件下海滨锦葵光合-光响应模型
引用本文:温黎明,赵秀梅,董轲,崔冰,高小淇,殷晓晓,王菊,范海. 不同盐渍条件下海滨锦葵光合-光响应模型[J]. 山东科学, 2018, 31(5): 81. DOI: 10.3976/j.issn.1002-4026.2018.05.013
作者姓名:温黎明  赵秀梅  董轲  崔冰  高小淇  殷晓晓  王菊  范海
作者单位:山东师范大学,山东省逆境植物重点实验室,山东 济南 250014
基金项目:山东省科技重大专项 (2015ZDJS03002)
摘    要:采用CIRAS-3便携式光合作用测定仪测定了不同盐渍条件下海滨锦葵在不同光强下的净光合速率。通过非直角双曲线模型、直角双曲线模型、指数模型和直角双曲线修正模型对光合参数和拟合曲线进行比较,探讨盐胁迫下海滨锦葵的光响应过程。结果表明,随着盐浓度的升高,海滨锦葵的净光合速率表现出先增高后降低的趋势。另外,从相对误差和决定系数来看,除了指数模型,其他3个模型在不同盐胁迫的海滨锦葵中均适用;发现随着盐浓度的升高,表观量子效率明显降低。对照条件下直角双曲线模型的拟合度最高,100 mmol·L-1和300 mmol·L-1 NaCl处理条件下直角双曲线修正模型为海滨锦葵的最适模型,200 mmol·L-1 NaCl处理条件下非直角双曲线模型的拟合度最高。

关 键 词:盐胁迫  海滨锦葵  光响应模型  
收稿时间:2018-04-09

Photosynthetic and light-response models of Kostelezkya virginica under different salt stress
WEN Li-ming,ZHAO Xiu-mei,DONG Ke,CUI Bing,GAO Xiao-qi,YIN Xiao-xiao,WANG Jü,FAN Hai. Photosynthetic and light-response models of Kostelezkya virginica under different salt stress[J]. Shandong Science, 2018, 31(5): 81. DOI: 10.3976/j.issn.1002-4026.2018.05.013
Authors:WEN Li-ming  ZHAO Xiu-mei  DONG Ke  CUI Bing  GAO Xiao-qi  YIN Xiao-xiao  WANG Jü  FAN Hai
Affiliation:Shandong Provincial Key Laboratory of Plant Stress Research, Shandong Normal University, Jinan 250014, China
Abstract:The net photosynthetic rate was measured by CIRAS-3 portable photosynthesis tester under different light intensity after different salt stress. To investigate the light response process of Kostelezkya virginica under salt stress, the non rectangular hyperbolic model, the rectangular hyperbolic model, the exponential model and the rectangular hyperbola modified model were used to compare the photosynthetic parameters and the fitting curves. With the aggravation of salt stress, the net photosynthetic rate of Kostelezkya virginica showed the trend of first increasing and then decreasing. Meanwhile, from the relative error and coefficient of determination, we found the other three models had some applicability to the Kostelezkya virginica under different salt stress, except the exponential model. With the increase of salt concentration, the apparent quantum efficiency decreased obviously. The rectangular hyperbolic model fitted the highest degree under contrast conditions. The rectangular hyperbola modified model was the most suitable light response model of Kostelezkya virginica under 100 mmol·L-1 and 300 mmol·L-1 NaCl treatments. The non rectangular hyperbolic model fitted best at 200 mmol·L-1 NaCl salt treatment.
Keywords:Kostelezkya virginicas  salt stress  light response model  
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