Abstract
We investigated the combined effects of soil moisture and light intensity on the growth, development and ecophysiological characteristics of one-year old Amorpha fruticosa seedlings. Soil moisture and light intensity influenced the ecophysiological characteristics of Amorpha fruticosa seedlings. Soil moisture resulted in the decreases of growth rate, individual size, net photosynthetic rate, transpiration rate, leaf water loss rate (WLR), and biomass accumulation of plant parts, and led to increased leaf water saturation deficit (WSD). Under water stress, more photosynthetic products were allocated to root growth. With decreasing light intensity, net photosynthetic rate, transpiration rate, chla/b, water saturation deficit, water use efficiency, water loss rate and biomass accumulation declined, while Chla, Chlb, Chla+b and carotenoids (Car) increased and more photosynthetic products were allocated to stem and leaf growth. Maximum growth vigor, net photosynthetic rate and total biomass accumulation in Amorpha fruticosa seedlings was recorded at 75–80% soil water-holding capacity and 100% light density in greenhouse environments.
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Fund project: This work was financially supported by National Science Foundation of China (No.31270374), Independent Innovation Foundation of Shandong University (No.2011DX008) and Natural Science Foundation of Shandong Province, China (No.2009ZRB01875; ZR2010CM062).
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Zhang, Xr., Tan, Xf., Wang, Rq. et al. Effects of soil moisture and light intensity on ecophysiological characteristics of Amorpha fruticosa seedlings. Journal of Forestry Research 24, 293–300 (2013). https://doi.org/10.1007/s11676-013-0352-y
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DOI: https://doi.org/10.1007/s11676-013-0352-y