Study of Uptake and Accumulation Characteristic of U and Cd Combined Stress for Wheat

Yan Zhang; Dan Wang

doi:10.4028/www.scientific.net/AMM.312.876

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 312Study of Uptake and Accumulation Characteristic of...

Study of Uptake and Accumulation Characteristic of U and Cd Combined Stress for Wheat

Abstract:

Water culture experiment was adopted to investigate the effects of U and Cod combined stress at different concentrations on the uptake and accumulation of U and Cod and physiological and biochemical characteristics in wheat seedlings. The experiment results showed that the U and Cod uptake by wheat seedlings was higher in roots than in aboveground parts when the total concentration of U and Cod was 5 mg/kg or 20 mg/kg, and the transfer factors (TFs) of U and Cod in wheat seedlings were above 1 when the total concentration was 100 mg/kg. But low concentration of U and Cod were rarely accumulated in wheat seedlings, indicating that wheat seedlings have good tolerance to U and Cod combined stress at low concentration. The experiment results also showed that with the increase in the total concentration of U and Cod, the root activity of wheat seedlings first increased and then decreased, and it exhibited a significant increase when the concentration was 20 mg/kg. Also, with the increase in concentration, the chlorophyll content of wheat seedlings first increased and then decreased, while the SOD activity first decreased and then increased.

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Periodical:

Applied Mechanics and Materials (Volume 312)

Pages:

876-880

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.312.876

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Online since:

February 2013

Authors:

Yan Zhang, Dan Wang

Keywords:

Accumulation Characteristic, Combined Stress, Wheat

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