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彩色马铃薯光合光响应曲线模拟及其特征参数分析

许国春 罗文彬 李华伟 许泳清 纪荣昌 李国良 林赵淼 邱思鑫 汤浩

许国春,罗文彬,李华伟,等. 彩色马铃薯光合光响应曲线模拟及其特征参数分析 [J]. 福建农业学报,2020,35(7):691−698 doi: 10.19303/j.issn.1008-0384.2020.07.001
引用本文: 许国春,罗文彬,李华伟,等. 彩色马铃薯光合光响应曲线模拟及其特征参数分析 [J]. 福建农业学报,2020,35(7):691−698 doi: 10.19303/j.issn.1008-0384.2020.07.001
XU G C, LUO W B, LI H W, et al. Light Response Model and Photosynthetic Parameters of Colored Potatoes [J]. Fujian Journal of Agricultural Sciences,2020,35(7):691−698 doi: 10.19303/j.issn.1008-0384.2020.07.001
Citation: XU G C, LUO W B, LI H W, et al. Light Response Model and Photosynthetic Parameters of Colored Potatoes [J]. Fujian Journal of Agricultural Sciences,2020,35(7):691−698 doi: 10.19303/j.issn.1008-0384.2020.07.001

彩色马铃薯光合光响应曲线模拟及其特征参数分析

doi: 10.19303/j.issn.1008-0384.2020.07.001
基金项目: 福建省科技计划公益类专项(2018R1026-4);国家现代马铃薯产业技术体系福州综合试验站专项(CARS-09-ES11);福建省种业创新与产业化工程项目(fjzycxny2017005);福建省农业科学院科技创新团队建设项目(STIT2017-2-3)
详细信息
    作者简介:

    许国春(1991−),男,硕士,研究实习员,主要从事薯类作物栽培生理研究(E-mail:xuguochun@faas.cn

    通讯作者:

    汤 浩(1968−),男,研究员,主要从事薯类作物遗传育种研究(E-mail:tanghao9403@163.com

  • 中图分类号: S 532

Light Response Model and Photosynthetic Parameters of Colored Potatoes

  • 摘要:   目的  阐明彩色马铃薯光合光响应特性及其与普通品种(黄、白肉)的差异。  方法  以2个普通和4个彩色马铃薯为材料,评估直角双曲线模型(RH)、非直角双曲线模型(NRH)、直角双曲线修正模型(MRH)和指数模型(EM)对马铃薯光合响应曲线的拟合效果,并对彩色与普通品种的最大净光合速率(Pn-max)、光饱和点(LSP)、光补偿点(LCP)、暗呼吸速率(Rd)和表观量子效率(AQY)等光响应参数进行比较分析。  结果  1)4种模型在弱光阶段的模拟效果均较好,但RH、NRH和EM模型无法拟合光抑制过程,只有MRH模型能对整个光响应过程进行准确拟合,决定系数(R2)均大于0.99,均方根误差和平均绝对误差也最小。2)彩色品种Pn-max均低于普通品种,相比费乌瑞它和闽薯1号分别低6.7%~34.2%和14.8%~40.0%;除红美外,其他3个彩色品种LSP都未超过1 000 μmol·m−2·s−1,远小于普通品种;彩色和普通马铃薯对弱光的利用能力没有明显区别。3)在4个彩色品种中,红美的Pn-maxLSP均最高,但对弱光的利用能力最低,与之相反,闽彩薯3号的弱光利用能力最强。4)气孔导度(Gs)和蒸腾速率(Tr)的光响应过程与净光合速率(Pn)相似,随着光强增大,呈先快速上升后平稳或下降趋势,而胞间CO2浓度(Ci)随光强增大总体呈快速下降后平缓的趋势。  结论  MRH模型对马铃薯光响应曲线的拟合效果最佳;彩色品种(系)的最大净光合速率低于普通品种,光饱和点低,总体表现为光合潜力低,光抑制现象明显,这一结果对通过育种手段来提高彩色马铃薯光合生产力具有一定指导意义,也可为其引种和栽培管理提供参考。
  • 图  1  4种光响应模型拟合的彩色马铃薯光响应曲线

    注:Obs、RH、NRH、MRH和EM分别代表观测值、直角曲线模型、非直角双曲线模型、直角双曲线修正模型和指数模型。

    Figure  1.  Light response of colored potato fitted on 4 models

    Note: Obs: observed data; RH: rectangular hyperbola model; NRH: non-rectangular hyperbola model; MRH: modified rectangular hyperbolic model; EM: exponential model.

    图  2  彩色马铃薯Gs(A)、Ci(B)和Tr(C)的光响应过程

    Figure  2.  Light response process of Gs (A), Ci (B), and Tr (C) of potato plants bearing colored tubers

    表  1  6个参试品种基本信息

    Table  1.   Information on 6 potato varieties under study

    品种  
    Variety  
    茎色
    Stem color
    叶色
    Leaf color
    肉色
    Flesh color
    皮色
    Tuber color
    薯形
    Tuber shape
    芽眼深浅
    Eye depth
    费乌瑞它 Favorita 绿色 绿色 椭圆
    闽薯1号 Minshu1 绿色 绿色 长椭圆
    黑金刚 Heijingang 绿带褐 绿色 扁椭圆
    闽彩薯3号 Mincaishu 3 绿带褐 深绿 长椭圆
    红美 Hongmei 绿带褐 绿色 扁椭圆
    闽彩薯4号 Mincaishu 4 绿带褐 深绿 长椭圆
    下载: 导出CSV

    表  2  4种光响应模型及其数学表达式

    Table  2.   Light response models

    模型
    Model
    数学表达式
    Mathematical expressions
    直角双曲线模型 RH ${P_{\rm n}}\left( I \right) = \dfrac{ {\alpha I{P_{ {\rm n}{\simfont\text{-} }{\rm max} } } } }{ {\alpha I + {P_{ {\rm n}{\simfont\text{-} }{\rm max} } } } } - {R_{\rm d}}\qquad\qquad \qquad \qquad \qquad \left( 1 \right)$
    非直角双曲线模型 NRH ${P_{\rm n} }\left( I \right) = \dfrac{ {\alpha I + {P_{ {\rm n}{\simfont\text{-} }{\rm max} } } - \sqrt { { {\left( {\alpha I + {P_{ {\rm n}{\simfont\text{-} }{\rm max} } } } \right)}^2} - 4\theta \alpha I{P_{ {\rm n{\simfont\text{-} } {\rm max} }} } } } }{ {2\theta } } - {R_{\rm d} } \qquad \qquad \left( 2 \right)$
    直角双曲线修正模型 MRH ${P_{\rm n}}\left( I \right) = \dfrac{ {\alpha \left( {1 - \beta I} \right)} }{ {1 + \gamma I} }I - {R_{\rm d}}\qquad \qquad \qquad \qquad \left( 3 \right)$
    指数模型 EM ${P_{\rm n} }\left( I \right) = {P_{ {\rm n}{\simfont\text{-} }{\rm max} } }\left( {1 - {e^{ - \alpha I/{P_{{\rm n} {\simfont\text{-} }{\rm max}} } } } } \right) - {R_{\rm d} } \qquad \qquad \qquad \left( 4 \right)$
    注:I: 光合有效辐射; α: 初始量子效率;θ: 反应曲线弯曲度的参数;β和γ: 独立于I的系数。
    Note: I: photosynthetically active radiation (PAR); α: initial quantum efficiency; θ: parameter on curvature of reaction curve, 0≤θ≤1; β and γ: coefficients independent of I.
    下载: 导出CSV

    表  3  4种光响应模型的拟合优度

    Table  3.   Goodness-of-fit on 4 light response models

    品种
    Variety
    模型
    Model
    决定系数 R2均方根误差
    RMSE
    平均绝对误差
    MAE
    费乌瑞它
    Favorita
    RH 0.983 3 0.75 0.50
    NRH 0.987 1 0.66 0.44
    MRH 0.994 8 0.42 0.33
    EM 0.988 8 0.62 0.47
    闽薯1号
    Minshu 1
    RH 0.997 0 0.35 0.27
    NRH 0.998 8 0.22 0.16
    MRH 0.999 5 0.14 0.12
    EM 0.997 5 0.32 0.25
    黑金刚
    Heijingang
    RH 0.936 8 1.09 0.91
    NRH 0.967 3 0.79 0.61
    MRH 0.995 8 0.29 0.23
    EM 0.970 8 0.75 0.53
    闽彩薯3号
    Mincaishu 3
    RH 0.909 0 1.34 1.06
    NRH 0.943 6 1.07 0.76
    MRH 0.999 0 0.14 0.12
    EM 0.947 4 1.04 0.68
    红美
    Hongmei
    RH 0.992 8 0.47 0.41
    NRH 0.998 8 0.19 0.12
    MRH 0.998 9 0.18 0.15
    EM 0.999 0 0.18 0.16
    闽彩薯4号
    Mincaishu 4
    RH 0.903 0 1.04 0.90
    NRH 0.949 5 0.77 0.58
    MRH 0.992 6 0.30 0.27
    EM 0.951 2 0.75 0.58
    注:RH、NRH、MRH和EM分别代表直角曲线模型、非直角双曲线模型、直角双曲线修正模型和指数模型。
    Note: RH: rectangular hyperbola model; NRH: non-rectangular hyperbola model; MRH: modified rectangular hyperbolic model; and, EM: exponential model.
    下载: 导出CSV

    表  4  直角双曲线修正模型拟合的彩色马铃薯Pn-光响应曲线特征参数

    Table  4.   Photosynthetic parameters of colored potato on Pn-PAR curves fitted in MRH model

    品种
    Variety
    初始量子效率α最大净光合速率
    Pn-max/(μmol·m−2·s−1
    光饱和点
    LSP/(μmol·m−2·s−1
    光补偿点
    LCP/(μmol·m−2·s−1
    暗呼吸速率
    Rd/(μmol·m−2·s−1
    表观量子效率
    AQY
    费乌瑞它
    Favorita
    0.077±0.028 b 15.65±1.85 ab 1 169.8±26.1 c 6.19±0.65 ab 0.449±0.075 bc 0.054±0.001 ab
    闽薯1号
    Minshu 1
    0.090±0.002 ab 17.14±1.06 a 1 730.3±134.2 a 7.15±0.51 a 0.624±0.030 ab 0.057±0.003 a
    黑金刚
    Heijingang
    0.098±0.008 ab 12.82±0.92 bc 948.7±51.7 d 6.59±0.20 ab 0.625±0.065 ab 0.054±0.002 ab
    闽彩薯3号
    Mincaishu 3
    0.078±0.003 b 13.28±1.59 bc 801.8±55.7 de 5.26±0.06 b 0.404±0.021 c 0.052±0.003 abc
    红美
    Hongmei
    0.074±0.006 b 14.60±1.18 ab 1 438.4±97.6 b 7.00±0.72 ab 0.665±0.100 a 0.047±0.001 c
    闽彩薯4号
    Mincaishu 4
    0.107±0.011 a 10.29±0.51 c 665.8±12.8 e 6.45±0.87 ab 0.570±0.058 abc 0.051±0.004 bc
    FF Value 3.31 6.03* 72.93** 2.29 4.57 5.68*
    注:同列数据后不同字母表示不同品种(系)间在0.05水平差异显著。
    Note: Data with different letters on same column indicate significant differences at 0.05 level.
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-04-07
  • 修回日期:  2020-06-16
  • 刊出日期:  2020-07-31

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