ZHANG Mengke,LU Haiyan,FAN Yaqiong,et al.Influence of Aluminum Treatment on the Photosynthetic Fluorescence Dynamics Characteristics During the Flowering Stage of Camellia oleifera[J].Northern Horticulture,2025,(1):82-88.[doi:10.11937/bfyy.20242517]
铝处理对油茶花期光合荧光动力学特性的影响
- Title:
- Influence of Aluminum Treatment on the Photosynthetic Fluorescence Dynamics Characteristics During the Flowering Stage of Camellia oleifera
- 文章编号:
- 1001-0009(2025)01-0082-07
- 关键词:
- 油茶; 铝胁迫; 光合荧光参数; 非光化学淬灭; 光合系统Ⅱ有效量子产量
- Keywords:
- Camellia oleifera; aluminum stress; photosynthetic fluorescence parameters; non-photochemical quenching; quantum yield of photosystem Ⅱ
- 分类号:
- S 794.1
- 文献标志码:
- A
- 摘要:
- 以八年生“湘林210”油茶为试材，采用叶面喷施不同浓度铝溶液的方法，研究了铝胁迫对油茶花期叶绿素含量及光合荧光参数的影响，以期探究不同浓度铝处理对油茶花期光合荧光动力学特性的影响。结果表明：叶面喷施不同浓度铝溶液对油茶叶绿素含量影响不显著，但能调节光合有效辐射（PAR）吸收能力。0.05 mol·L-1铝处理在12:10时PAR显著高于对照，0.10 mol·L-1铝处理在多个时间点均有较高的PAR，说明适当浓度的铝处理能够增强PAR吸收，提升光合作用效率。非光化学淬灭系数（NPQt）日变化显示，0.15 mol·L-1铝处理在多个时间点NPQt值最高，说明铝处理还能够通过增强光保护机制，提升油茶对高强度光照的适应性。光合系统Ⅱ有效量子产量（Φ2）在0.15 mol·L-1铝处理中整体最高，进一步证实了铝处理有提高油茶光能利用效率的作用。综上，油茶可以通过调节光合荧光参数逐渐适应铝胁迫环境，保护自身免受光合系统的不利影响。
- Abstract:
- Taking 8-year-old ‘Xianglin 210’ Camellia oleifera as the test material,the effects of aluminum stress on chlorophyll content and photosynthetic fluorescence parameters of Camellia oleifera during flowering were studied by spraying different concentrations of aluminum solution on the leaves,in order to explore the effects of different concentrations of aluminum treatment on Photosynthetic fluorescence dynamic characteristics of Camellia oleifera during flowering.The results showed that the application of aluminum solutions at different concentrations had a non-significant effect on chlorophyll content，but it did modulate the capacity to absorb photosynthetically active radiation (PAR).The treatment group with 0.05 mol·L-1 aluminum exhibited a markedly higher PAR at 12:10 compared to the control，while the 0.10 mol·L-1 aluminum treatment maintained elevated PAR across several time points，suggesting that an optimal concentration of aluminum could augment PAR absorption and consequently enhance photosynthetic efficiency.The diurnal changes in non-photochemical quenching (NPQt) indicated that the group treated with 0.15 mol·L-1 aluminum had the highest NPQt values at multiple time points，which implied that aluminum treatment was capable of bolstering the photoprotective mechanism，thereby improved the plant′s adaptability to intense light conditions.The effective quantum yield of photosystem Ⅱ (Φ2) was found to be highest in the group treated with 0.15 mol·L-1 aluminum，further substantiating the role of aluminum in augmenting the light energy utilization efficiency of oil tea.Collectively，these results indicated that C.oleifera could adapt to aluminum stress by adjusting photosynthetic fluorescence parameters，which helps to safeguard the plant from adverse impacts on the photosynthetic apparatus.
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备注/Memo
第一作者简介：张孟可（1998-），女，硕士研究生，研究方向为经济林高产高效栽培与病虫害防治。E-mail：mengkezhang9812@163.com.责任作者：谢鹏（1984-），女，博士，副教授，现主要从事经济林高产高效栽培等研究工作。E-mail：297262359@qq.com.基金项目：湖南省教育厅重点资助项目（20A360）。收稿日期：2024-06-14