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Copper tolerance of the biomass crops Elephant grass (Pennisetum purpureum Schumach), Vetiver grass (Vetiveria zizanioides) and the upland reed (Phragmites australis) in soil culture

文献类型： 外文期刊

作者： Liu, Xinghua 1 ; Shen, Yixing 2 ; Lou, Laiqing 1 ; Ding, Chenglong 3 ; Cai, Qingsheng 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Life Sci, Nanjing 210095, Peoples R China

2.Nanjing Agr Univ, Coll Anim Sci & Technol, Nanjing 210095, Peoples R China

3.Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China

关键词： Copper;Elephant grass;Vetiver grass;Upland reed;Cellulosic biomass;Calorific value;Phosphate

期刊名称：BIOTECHNOLOGY ADVANCES （ 影响因子：14.227； 五年影响因子：16.301 ）

ISSN：

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收录情况： SCI

摘要： Pot trials were conducted to study the influence of copper (Cu) on the growth and biomass of Elephant grass (EG, Pennisetum purpureum Schumach), Vetiver grass (VG, Vetiveria zizanioides) and the upland reed (UR, Phragmites australis). Cu toxicity in EG, VG and UR was positively correlated with the total and bioavailable Cu concentrations in the soil. Based on the EC sub(5) sub(0), dry weights, Cu contents, chlorophyll contents and photosynthesis rates, the Cu-tolerance of the three species followed the trend EG>VG>UR. There were no significant differences in the unit calorific values among the different plants, though the total calorific values of EG were higher than those of VG and UR due to its higher biomass. The addition of KH sub(2)PO sub(4) to the soil decreased the bioavailability of Cu and the Cu uptake by plants. EG could therefore be a good candidate for growth on Cu-contaminated soils, especially those improved by phosphate.

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