宛氏拟青霉提取物对淹水胁迫下玉米叶片叶绿素荧光动力学参数的影响
宛氏拟青霉提取物对淹水胁迫下玉米叶片叶绿素荧光动力学参数的影响
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XING Yumei , WAN Yunting , LIU, Yanlong , WANG, Pengfei , FAN Zhen , ZHAO Youxin and TIAN Xiaofei
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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【目的】探究宛氏拟青霉提取物（PVE）提高玉米幼苗对淹水胁迫适应能力的光合生理机制。【方法】通过人工模拟淹水胁迫环境，研究不同程度淹水胁迫后叶面喷施清水和PVE对玉米幼苗生长和叶片快速叶绿素荧光诱导动力学曲线（OJIP）的影响。【结果】淹水胁迫显著抑制了玉米幼苗生长，降低了叶片的净光合速率。长期淹水胁迫（＞4 d）导致玉米幼苗叶片OJIP曲线发生明显变化，增加了在O相处的初始荧光强度（Fo），但降低了叶片I相（30 ms）和P相（最大荧光）荧光值。与正常水分处理相比，淹水胁迫减少了单位面积内反应中心的数量（RC/CSm），抑制了QA向QB的传递过程和电子传递能力（Ψo和δRo）。与叶面喷施清水处理相比，解除短期淹水胁迫（≤2 d）后叶面喷施PVE缓解了单位叶面积吸收（ABS/CSm）、捕获（...
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宛氏拟青霉提取物对淹水胁迫下玉米叶片叶绿素荧光动力学参数的影响
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TN_cdi_wanfang_journals_ggps202110007
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202110007
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1672-3317
DOI
10.13522/j.cnki.ggps.2021108
