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| Growth and Cd accumulation of rice(Oryza sativa L.) grown in soils amended with Cd from different pollution sources |
| Received:November 09, 2015 |
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| KeyWord:rice plant;cadmium;soil pollution source;irrigation water pollution source;atmospheric pollution source;brown rice |
| Author Name | Affiliation | E-mail | | LONG Si-si | College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China | | | SONG Zheng-guo | Key Laboratory of Production Environment and Agro-product Safety of Ministry of Agriculture and Tianjin Key Laboratory of Agro-environment and Food Safety, Tianjin 300191, China | forestman1218@163.com | | LEI Ming | College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China | leiming8297@163.com | | YU Li | College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China | | | WANG Yi-kang | College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China | | | JIANG Hong-fang | Hunan Anbang New Agricultural Science and Technology Corp and Hunan Anbang Academy of Agricultural, Hengyang 421200, China | | | SHEN Yue | Key Laboratory of Production Environment and Agro-product Safety of Ministry of Agriculture and Tianjin Key Laboratory of Agro-environment and Food Safety, Tianjin 300191, China | |
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| Abstract: |
| Cadmium from different pollution sources may have different bioavailability, thus showing various effects on plants. Here an experiment was carried out to study the effects of different sources of Cd on growth and Cd uptake of rice(Oryza sativa L.) under greenhouse condition. Cadmium was added to soil-rice system via mixing soil with Cd2+-containing solution, irrigating water and leaf-spraying to simulate soil pollution, irrigation water pollution, and atmospheric deposit pollution sources, respectively. Compared with the control, there were no significant differences in plant height and grain yields of rice among three different Cd pollution sources(P>0.05), while the contents of Cd in rice plants significantly increased(P<0.05) with increasing Cd concentrations in three pollution sources. The distributions of Cd in rice plants treated with soil pollution and irrigation water pollution sources were:root >stem >leaf >husk >brown rice, whereas it was leaf >root >stem >husk >brown rice under atmospheric Cd pollution. Significant linear relationship(P<0.05) was found between Cd content in leaves and in husks of rice in the same Cd pollution source, or across different pollution sources. The highest concentration of Cd in brown rice was observed under atmospheric pollution source, followed by irrigation water pollution and soil pollution sources, suggesting that enrichment of Cd in brown rice decreased in order of atmospheric pollution >irrigation water pollution >soil pollution. |
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