XU Ming-yuan,WANG Qian-bo,GUO Sheng-lei,et al.Effect of Shading on Growth and Photosynthetic Physiological Parameters of Acanthopanax senticosus[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(20):140-145.
XU Ming-yuan,WANG Qian-bo,GUO Sheng-lei,et al.Effect of Shading on Growth and Photosynthetic Physiological Parameters of Acanthopanax senticosus[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(20):140-145. DOI: 10.13422/j.cnki.syfjx.20202116.
Effect of Shading on Growth and Photosynthetic Physiological Parameters of Acanthopanax senticosus
To study the effect of different shading conditions on the growth and photosynthetic physiological parameters of
Acanthopanax senticosus
,and provide a theoretical basis for standardized planting and rational development and utilization of
A. senticosus
.
Method
2
Three-year-old
A. senticosus
was used as the experimental sample.The growth parameters and photosynthetic physiological parameters of plant height,leaf number and leaf area were determined to study the effects of different shading conditions on the growth and photosynthesis of
A. senticosus
.
Result
2
Plant height,leaf number,and leaf area were significantly higher in the shading treatment than in the control group,and highest under moderate shading conditions.The net photosynthetic rate,stomatal conductance,and transpiration rate were significantly higher in the moderate shading group than in the control group,and decreased in the severe shading group,while the intercellular carbon dioxide concentration was significantly lower in the moderate shading group than in the other treatment groups.As the treatment time progressed,the initial fluorescence was not significantly higher in the moderate shading group than in the control group,but significantly higher in the severe shading group;the maximum fluorescence was significantly higher in the shading group than in the control group,in the moderate shading group.The potential photochemical efficiency and maximum photochemical efficiency were not significantly different between the moderate shading group and the control group and decreased in the severe shading group,which was significantly lower than other treatment groups.
Conclusion
2
Shading treatment is beneficial to the growth of
A. senticosus
.The moderate shading condition can significantly improve the photosynthesis of
A. senticosus
.Severe shading treatment can significantly inhibit the photosynthesis of
A. senticosus
leaves.This effect is related to the regulation of stomatal regulation. The activity of the photoreaction center is related.
关键词
Keywords
references
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