[Effects of color films shading on Phellodendron amurense seedlings biomass and primary nitrogen-assimilation enzyme activities].
In this paper, greenhouse Phellodendron amurense seedlings were shaded with red, yellow, blue, and green films for 100 days, and their biomass, chlorophyll and soluble protein contents, and nitrate reductase and glutamine synthetase activities were determined. Compared with exposure under sunlight, color films shading decreased the seedlings biomass significantly. Plant height and stem diameter had the similar trend with plant biomass. Root/ shoot ratio was less affected by red and yellow films shading, while root biomass was decreased significantly under blue and green films shading. Leaf chlorophyll content was increased significantly under the shading with blue, green and red films, especially with blue film. Red film shading increased the chlorophyll a/b ratio, while blue film shading was in adverse. Under color films shading, soluble protein content and nitrate reductase and glutamine synthetase activities were significantly higher than the control.
Li
Xia
X
College of Life Sciences, Northeast Forestry University, Harbin 150040, China. lixia0095@163.com
Yan
Xiufeng
X
Yu
Tao
T
D018533:Biomass; D005981:Glutathione Synthase / Q000378:metabolism; D050901:Nitrate Reductase / Q000378:metabolism*; D032102:Phellodendron / Q000201:enzymology / Q000254:growth & development*; D036226:Seedlings / Q000254:growth & development*; D013472:Sunlight
D050901:Nitrate Reductase; D005981:Glutathione Synthase