Abstract
We studied varietal difference in radiocesium accumulation by using Japanese and World rice collection for future development of low accumulation varieties. As a result, the radiocesium activity concentration varied by 12- and 22-fold in seed grains and straws, respectively. When we examined the seed grain to straw ratio of radiocesium activity concentration, paddy rice cultivars of Japonica sub-species showed a lower result than Indica and Javanica paddy rice cultivars. These observations suggest that the Japonica paddy rice cultivars may have the property of repressing radioactive cesium translocation to edible parts.
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Acknowledgements
This study was supported by the Special Research Fund of the Ministry of Education, Culture, Sports, Science and Technology (MEXT) Japan titled “Research and development of security and safe crop production to reconstruct agricultural lands in Fukushima prefecture based on novel techniques to remove radioactive compounds using advanced bio-fertilizer and plant protection strategies”.
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Kojima, K., Ookawa, T., Yamaya-Ito, H. et al. Characterization of 140 Japanese and world rice collections cultivated in Nihonmatsu-city in Fukushima in terms of radiocesium activity concentrations in seed grains and straws to explore rice cultivars with low radiocesium accumulation. J Radioanal Nucl Chem 314, 1009–1021 (2017). https://doi.org/10.1007/s10967-017-5453-1
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DOI: https://doi.org/10.1007/s10967-017-5453-1