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| Analysis of Genotypic and Environmental Effects on Cadmium Content in Rice by AMMI Model |
| Received:January 06, 2015 |
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| KeyWord:rice;cadmium;genotype;environment;AMMI model;Di value |
| Author Name | Affiliation | E-mail | | WEN Na | Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China
Centre for Research in Eco-toxicology and Environmental Remediation, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | WANG Jing-an | Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China | jinganwang899@126.com | | LIU Zhong-qi | Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Science, Tianjin Normal University, Tianjin 300387, China
Centre for Research in Eco-toxicology and Environmental Remediation, Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | liuzhongqi508@163.com |
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| Abstract: |
| Cadmium(Cd) accumulation in rice is greatly influenced by genotypes and environmental factors. In this study, ten early and eight late rice cultivars, widely planted in Hunan Province, were selected as genotype materials and were planted at four experimental sites in each of safe, and slightly and lowly contaminated areas. The AMMI model was used to analyze genotype and environment interactive effects on Cd content and stability in rice. Soil Cd pollution degree and plant growth season had significant impacts on Cd accumulation in rice. The ratios of rice Cd to the official maximum allowable limit in late rice were significantly higher than those in early rice cultivars in the Cd contaminated sites. Cadmium content in early rice was significantly influenced by genotypes. Therefore, varieties with low and stable Cd content in rice grain could be chosen to reduce Cd accumulation in early rice. However, environmental factors had dominant effects on cadmium accumulation in late rice. It would be critical to analyze the genotype and environment interaction to determine appropriate areas for late rice cultivars with low Cd accumulation. The stability of Cd accumulation in rice was determined by Di values, which is important for guiding extension of rice cultivars with low Cd accumulation. |
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