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中国农学通报 ›› 2020, Vol. 36 ›› Issue (28): 57-62.doi: 10.11924/j.issn.1000-6850.casb20190900678

• 林学·园艺·园林 • 上一篇    下一篇

枸杞不同品系的光合特性及光响应模型拟合研究

何昕孺1(), 王琴平2, 秦垦1(), 戴国礼1, 周军2, 赵瑞秋3   

  1. 1宁夏农林科学院枸杞工程技术研究所,银川 750001
    2北方民族大学,银川 750021
    3银川市园林管理局,银川 750001
  • 收稿日期:2019-09-23 修回日期:2019-11-27 出版日期:2020-10-05 发布日期:2020-09-23
  • 通讯作者: 秦垦
  • 作者简介:何昕孺,女,1988年出生,宁夏盐池人,助理研究员,硕士,主要从事枸杞育种与栽培工作。通信地址:750001 宁夏银川市金凤区黄河东路590号 宁夏农林科学院,Tel:0951-6886783,E-mail:hhexinru@163.com
  • 基金资助:
    宁夏自治区农业育种专项“丰产优质枸杞新品种选育”(2018NYYZ0102);宁夏回族自治区科技基础条件建设项目“枸杞育种信息化平台建设”;宁夏农林科学院科技平台建设提升项目“枸杞种质资源圃资源收集与保存”(NKYP-19-13);宁夏农林科学院科技成果转化项目“枸杞篱架栽培技术规模化生产示范”(NNKZZCGZH-2019-02);宁夏自然科学基金项目“枸杞高光效种质筛选及光合生理特性的研究”(2020AAC03288)

Photosynthetic Characteristics and Light Response Model Fitting of Wolfberry

He Xinru1(), Wang Qinping2, Qin Ken1(), Dai Guoli1, Zhou Jun2, Zhao Ruiqiu3   

  1. 1Wolfberry Engineering Research Institute, Ningxia Academy of Agricultural and Forestry Sciences, Yinchuan 750001
    2North Minzu University, Yinchuan 750021
    3Yinchuan Municipal Bureau of Parks, Yinchuan 750001
  • Received:2019-09-23 Revised:2019-11-27 Online:2020-10-05 Published:2020-09-23
  • Contact: Qin Ken

摘要:

为深入了解枸杞光合特性,探讨不同光响应模型对枸杞光合作用的实用性,以期为枸杞新品种的选育提供理论依据。以‘14-Z44’、‘14-2-3-20’、‘宁杞1号’为研究对象,比较3个品种(系)间的叶片形态生理及光合特性指标,利用不同光响应模型分别对3个品种(系)叶片的光合光响应曲线进行拟合。结果表明,‘14-2-3-20’叶片形态特征和生物量与‘宁杞1号’有显著差异,叶厚度、比叶重无差异。与实测值相比,直角双曲线模型、非直角双曲线模型拟合的各测量点的光合速率最接近实测值,但光合参数值与实测值差异较大,直角双曲线修正模型拟合的光响应曲线、光合参数均接近实测值,并有光抑制现象。与‘宁杞1号’相比,‘14-2-3-20’、‘14-Z44’的LCPLSPRd均较低,α较高,‘14-2-3-20’的Pnmax最高。综合分析得出,直角双曲线修正模型较适用于拟合枸杞光响应曲线,‘14-2-3-20’弱光利用能力强,强光下光合能力也高,不易出现光抑制现象,在选育丰产品种方面有潜在的价值。

关键词: 枸杞, 叶片, 光响应模型, 光响应曲线, 光合参数

Abstract:

The paper aims to understand the photosynthetic characteristics of wolfberry, explore the applicability of different light response models to wolfberry photosynthesis, and provide a theoretical basis for the breeding new varieties. The paper used ‘14-Z44’, ‘14-2-3-20’ and ‘Ningqi 1’ as the materials, compared the leaf morphology physiology and photosynthetic characteristics, fitted the photosynthetic light response curve with different light response models of the three varieties. The leaf morphology and biomass were significantly different between ‘14-2-3-20’ and ‘Ningqi 1’, and there was no difference in leaf thickness and specific leaf weight. Compared with the measured values, the photosynthetic rates of the measurement points fitted by the rectangular hyperbola model and the non-rectangular hyperbola model were the closest to the measured values, but the photosynthetic parameters were significantly different with the measured values. The light response curve and photosynthetic parameters fitted by the modified rectangular hyperbola model were close to the measured values, and there was light inhibition. Compared with ‘Ningqi 1’, the photosynthetic parameters of ‘14-2-3-20’ and ‘14-z44’ were lower in LCP, LSP, Rd and higher in α, the Pnmax of ‘14-2-3-20’ was the highest. The comprehensive analysis shows that the modified rectangular hyperbola model is more suitable for fitting the wolfberry light response curve. ‘14-2-3-20’ has strong ability to use low light, high photosynthetic capacity under strong light, is not easy to be light suppressed, and has potential value in breeding high-yield varieties

Key words: wolfberry, leaf, light response model, photoresponse curve, photosynthetic parameter

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