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| Interaction between cadmium and trace elements in the wheat absorption process |
| Received:August 02, 2021 Revised:November 19, 2021 |
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| KeyWord:wheat;cadmium;competition;zinc;manganese |
| Author Name | Affiliation | E-mail | | YAO Chen | School of Forestry, Henan Agricultural University, Zhengzhou 450002, China | | | JIA Ruiqi | School of Forestry, Henan Agricultural University, Zhengzhou 450002, China | | | LA Guixiao | Cash Crops Research Institute, Henan Academy of Agri- cultural Sciences, Zhengzhou 450002, China | | | WANG Ning | School of Life Science, Henan Agricultural University, Zhengzhou 450002, China | | | LU Xiazi | School of Forestry, Henan Agricultural University, Zhengzhou 450002, China | | | GUO Ziang | School of Forestry, Henan Agricultural University, Zhengzhou 450002, China | | | GONG Ziyang | School of International Education, Henan Agricultural University, Zhengzhou 450002, China | | | ZHAO Yanyang | School of International Education, Henan Agricultural University, Zhengzhou 450002, China | | | GUO Hongyu | School of Forestry, Henan Agricultural University, Zhengzhou 450002, China | | | LI Xuanzhen | School of Forestry, Henan Agricultural University, Zhengzhou 450002, China | xzli2015@sina.com |
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| Abstract: |
| To develop wheat physiological resistance control and Cadmium(Cd)reduction materials, the effects of different Zinc(Zn)(1~10 μmol· L-1)and manganese(Mn)(1~10 μmol· L-1)concentrations on wheat biomass and the Cd/Zn/Mn content were studied using hydroponic experiments with Zhengmai 1354 and Zhengmai 1860 wheat varieties. The effects of different Cd(1~50 μmol·L-1)stress levels on wheat biomass and Cd/Zn/Mn uptake were examined. The results showed that the 5 μmol · L-1 Zn and 10 μmol · L-1 Mn treatments significantly increased the biomass of the two types of wheat. The Mn(1~10 μmol · L-1) treatment reduced the Cd content in the aboveground parts of Zhengmai 1354 and Zhengmai 1860 by 22.8%~29.4% and 15.2%~17.5%, respectively, and reduced the Cd content in the underground parts by 25.7%~30.0% and 28.6%~31.6%, respectively. The Zn(1~10 μmol·L-1)treatment reduced the Cd content in the underground parts of Zhengmai 1354 and Zhengmai 1860 by 20.3%~34.3% and 18.9%~43.0%, respectively, and reduced the Cd content in the aboveground parts of Zhengmai 1354 by 10.1%~13.1%. Different cadmium stress(1~50 μmol·L-1)tended to increase the wheat biomass. As the Cd stress level increased, the Cd content in the aboveground and underground parts of both plant varieties increased, the Zn content in the underground parts decreased after first increasing, and the Mn content gradually decreased. The results showed that there was a competitive relationship between Cd and Mn, and the relationship between Cd and Zn was more complex. Moreover, moderately increasing the supply of Mn and Zn significantly reduced the Cd content in wheat plants. Therefore, Mn and Zn are effective physiological resistance control agents for reducing the Cd content in wheat. |
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