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- W2364126715 abstract "Aims Although Phellodendron amurense is generally recognized as a shade-intolerant tree species,it has been reported to have some shade tolerance and be able to regenerate in both full sunshine and shade in New York,USA,where it is invasive. Our objective was to investigate shade tolerance of P. amurense. Methods We planted 2-year-old P. amurense seedlings in two plantation plots,one with full natural light and the other with 15% of full natural light. After one year we observed the parameters of gas exchang,including maximum net photosynthetic rate (Pmax),apparent quantum yield (AQY),dark respiration rate (Rd),light compensation point (LCP) and light use efficiency (LUE),using a Li-6400 (Li-Cor,USA). We also determined chlorophyll (Chl) contents per unit leaf area and per unit mass and specific leaf weight (SLW). Important findings There were no significant differences (p0.05) between sun and shade treatments for Pmax,AQY and Rd. However,plants in the shade treatment had significantly lower LCP and SLW,but higher Chl content per unit mass and leaf area. These results indicated that P. amurense seedlings effectively used weak light by decreasing LCP and Rd,and enhanced the ability of capturing light by decreasing SLW and increasing leaf area and relative content of chlorophyll b,which made LUE increase in weak light condition. Therefore,P. amurense seedlings are shade tolerant." @default.
- W2364126715 created "2016-06-24" @default.
- W2364126715 creator A5055461472 @default.
- W2364126715 date "2009-01-01" @default.
- W2364126715 modified "2023-09-23" @default.
- W2364126715 title "EFFECTS OF SHADING ON THE PHOTOSYNTHETIC CHARACTERISTICS AND LIGHT USE EFFICIENCY OF PHELLODENDRON AMURENSE SEEDLINGS" @default.
- W2364126715 hasPublicationYear "2009" @default.
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