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Effects of Different Phosphorus Concentration on Growth and Development of Moso Bamboo

Keywords: Moso bamboo (Phyllostachys edulis),Seedling,Phosphorus concentration,Root system,Endogenous hormone,Hydroponic

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The effects of different phosphorus concentration on growth of moso bamboo (Phyllostachys edulis) were studied under hydroponic condition. With the decreasing phosphorus concentration, root length and root surface area was increased. The dry biomass and root to shoot ratio of moso bamboo tended to rise at first and then fall as phosphorus concentration increased. When the concentration of phosphorus was 0 mmol L-1, the contents of the four endogenous hormone in root rose firstly and fall later. The contents of IAA, ZR and GA3 in root fall firstly and rose later in other concentrations. The content of ABA in roots did not change obviously (except for 0.5 mmol L-1). The contents of IAA, GA3 and ABA in leaves were decreased, while ZR increased. Therefore, phosphorus concentration had significant effect on the contents of endogenous hormones in moso bamboo, which influenced growth of roots of moso bamboo.


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