不同光照条件下顶花板凳果的光合特性变化及耐阴性评价

杨欣蕊; 王庆; 李倩; 岳明; 赵雪艳; 白晶茹; 李艳

doi:10.12302/j.issn.1000-2006.202412015

杨欣蕊, 王庆, 李倩, 岳明, 赵雪艳, 白晶茹, 李艳

南京林业大学学报（自然科学版） ›› 2025, Vol. 49 ›› Issue (6) : 162-170.

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南京林业大学学报（自然科学版） ›› 2025, Vol. 49 ›› Issue (6) : 162-170. DOI: 10.12302/j.issn.1000-2006.202412015

研究论文

不同光照条件下顶花板凳果的光合特性变化及耐阴性评价

杨欣蕊 ¹^,² ,
王庆 ¹ ,
李倩 ¹ ,
岳明 ¹^,² ,
赵雪艳 ¹ ,
白晶茹 ¹^,² ,
李艳 ¹^,^*

作者信息 +

Photosynthetic characteristics changes and evaluation on shade tolerance of Pachysandra terminalis under different light conditions

YANG Xinrui ¹^,² ,
WANG Qing ¹ ,
LI Qian ¹ ,
YUE Ming ¹^,² ,
ZHAO Xueyan ¹ ,
BAI Jingru ¹^,² ,
LI Yan ¹^,^*

Author information +

文章历史 +

摘要

【目的】探究遮阴强度对顶花板凳果(Pachysandra terminalis)的形态特征、生理指标、光合参数,以及叶绿素荧光参数等方面的影响,为顶花板凳果在园林领域中的应用提供理论依据。【方法】以顶花板凳果为试验材料,设置全光照(对照组,CK)、遮阴度30%、65%、85% 4种光照条件,对其形态特征、生理指标、光合参数以及叶绿素荧光参数等进行测定,通过主成分分析和隶属函数法对顶花板凳果耐阴性进行综合评价。【结果】随着遮阴强度的增加,顶花板凳果总叶绿素含量、最大光化学量子产量、PSⅡ活性、电子传输效率,以及光化学淬灭系数均呈增加的趋势;而叶片厚度、叶面积、冠幅、比叶面积、叶片含水率,以及相对电导率则呈现先增大后减小的趋势。各遮阴处理组中,叶长、叶宽、初始荧光,以及非光化学猝灭系数均显著低于对照组。在遮阴度65%条件下,表观量子效率达到最大值,最大净光合速率显著高于其他处理组,光补偿点达到最小值,且此时光饱和点较对照组显著增大。【结论】顶花板凳果是一种耐阴性良好的植物,轻度遮阴可以促进其生长发育,遮阴度为65%较为适宜。

Abstract

【Objective】This study aims to explore the effects of shading intensity on morphological characteristics, physiological indices, photosynthetic parameters, and chlorophyll fluorescence parameters of Pachysandra terminalis. It provides a theoretical basis for the application of P. terminalis in landscaping.【Method】Taking P. terminalis as the experimental material, four light conditions were set up: full light(control group, CK), 30% shading, 65% shading, and 85% shading. Measurements were taken on its morphological characteristics, physiological indices, photosynthetic parameters, and chlorophyll fluorescence parameters. The shade tolerance was comprehensively evaluated through principal component analysis and the membership function method.【Result】With the increase of shading intensity,the chlorophyll content, maximal quantum yield, PS Ⅱ activity, electron transport rate and photochemical quenching coefficient all showed an increasing trend. Leaf thickness, leaf area, crown width, specific leaf area, leaf water content, and relative conductivity showed an initial increase followed by a decrease. In all shading treatment groups, leaf length, leaf width, initial fluorescence, and non-photochemical quenching coefficient were significantly lower than those in the control group. Under the 65% shading condition, the apparent quantum yield reached its maximum value, the maximum net photosynthetic rate was significantly higher than that in other treatment groups, while the light compensation point reached its minimum value. Additionally, the light saturation point increased significantly compared to the control group.【Conclusion】P. terminalis is a shade-tolerant plant. Mild shading can promote its growth and development, with 65% shading being optimal.

导出引用

杨欣蕊, 王庆, 李倩, 等. 不同光照条件下顶花板凳果的光合特性变化及耐阴性评价[J]. 南京林业大学学报（自然科学版）. 2025, 49(6): 162-170 https://doi.org/10.12302/j.issn.1000-2006.202412015

YANG Xinrui, WANG Qing, LI Qian, et al. Photosynthetic characteristics changes and evaluation on shade tolerance of Pachysandra terminalis under different light conditions[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2025, 49(6): 162-170 https://doi.org/10.12302/j.issn.1000-2006.202412015

中图分类号： S751.1

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