| 吴文华 1，2，韦阳莲 3，蔡楚雄 3，郭 韵 1,2，曹洪麟 1.不同损伤处理对土沉香光合特性及叶绿素荧光参数的影响[J].广东农业科学,2019,46(12):20-26 |
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不同损伤处理对土沉香光合特性及叶绿素荧光参数的影响 |
| Effects of Different Damage Treatments on Photosynthetic Characteristics and Chlorophyll Fluorescence Parameters of Aquilaria sinensis (Lour.) Spreng. |
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| DOI：10.16768/j.issn.1004-874X.2019.12.003 |
| 中文关键词: 土沉香 损伤处理 光合特性 叶绿素荧光 |
| 英文关键词: Aquilaria sinensis (Lour.) Spreng damage treatments photosynthetic characteristics chlorophyll fluorescence |
| 基金项目:广东省科技计划项目（2017A030303060）；东莞市科技计划项目（2015108101002） |
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| 中文摘要: |
| 【目的】研究不同损伤处理对土沉香叶片的光合特性和荧光参数的影响，提高沉香结香率，使
结香质量接近天然品质，满足医药卫生需要，维护人民群众健康，实现野生土沉香资源的保护和可持续利用。
【方法】以 15 年生土沉香为材料，在 1 月份进行不同程度的损伤处理（A，不去枝去根；B，去枝去根 1/3；C，
去枝去根 2/3；D，截干），对处理后叶片的光合参数及叶绿素荧光参数进行测定，以不施行任何处理作对照。
【结果】B、C、D 处理下土沉香叶片的光合参数与对照相比均有显著差异，这可能是由于损伤后叶肉细胞的
光合能力增强所致，尤以截干处理下土沉香叶片的光合参数均显著增加，表明此种损伤处理下土沉香的叶片
光合能力最强； A、B、C 处理下叶片的最大光化学效率（Fv/ Fm）及 PS Ⅱ潜在活性（Fv/ F0）与对照相比均
无显著差异。【结论】截干处理下土沉香的光合特性和荧光参数与对照相比呈显著差异，截干处理显著提高
了土沉香的光合作用，A、B、C 处理不会对土沉香树体的生长造成较大影响，而光合能力强弱及光合产物积
累量与结香状况之间存在何种联系还有待进一步探讨。 |
| 英文摘要: |
| 【Objective】The experiment was to study the effects of different damage treatments on the photosynthetic
characteristics and fluorescence parameters of the leaves of Aquilaria sinensis, improve the formation rate of A. sinensis,
facilitate the quality of A. sinensis close to the natural quality, meet the needs of medicine and health, maintain the health
of the people, realize the protection and sustainable utilization of wild A. sinensis resources.【Method】By using 15-yearold A. sinensis trees as tested material and no any damage treatment as control group, different wound treatments on the
trees were implemented in July（A:No cutting; B:1/3 cutting of lateral branch and lateral root; C:2/3cutting of lateral branchand lateral root; D:stem cutting-off). The photosynthetic characteristics and chlorophyll fluorescence parameters of A. sinensis
(Lour.) Spreng was measured after treatments.【Result】The results showed that: (1) compared with the control group, the
photosynthetic parameters of leaves in the three groups treated with B, C and D were significantly different, which may be due to
the enhanced photosynthetic capacity of mesophyll cells after injury. (2) the photosynthetic parameters of the leaves of agarwood
in the cut-off treatment(group D) increased significantly, indicating that the leaves of agarwood in the cut-off treatment had
the strongest photosynthetic capacity. (3) The maximum photochemical efficiency (Fv/Fm) and PS Ⅱ potential activity (Fv/F0)
of treatment A, B and C had no difference with those of control group. 【Conclusion】Under treatment D, the photosynthetic
characteristics and fluorescence parameters of A. sinensis were significantly different from those of the control group and, stem
cutting-off treatment improved the photosynthesis of A. sinensis significantly. Treatment A, B and C had no great influence
on the growth of the trees, while the relationship between the photosynthesis capacity and the accumulation of photosynthetic
products and agarwood formation rate remains to be further discussed. |
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