Characterization of selenium accumulation of different rice genotypes in Chinese natural seleniferous soil

Biaojin Zhang, Yihua Wei, Song Yan, Huaxin Shi, Yuanyuan Nie, Guoxing Zou, Xiangxi Zhang and Linguang Luo
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Biaojin Zhang: Instituteof Quality Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, P.R. China
Yihua Wei: Instituteof Quality Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, P.R. China
Song Yan: Jiangxi Super-rice Research and Development Center, Nanchang, P.R. China
Huaxin Shi: Hehu Agricultural Technology Promotion Comprehensive Station of Fengcheng City, Yichun, P.R. China
Yuanyuan Nie: Jiangxi Super-rice Research and Development Center, Nanchang, P.R. China
Guoxing Zou: Rice Research Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, P.R. China
Xiangxi Zhang: Instituteof Quality Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, P.R. China
Linguang Luo: Instituteof Quality Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, P.R. China

Plant, Soil and Environment, 2019, vol. 65, issue 1, 15-20

Abstract: In this study, the difference of Se content in brown rice of different rice genotypes was evaluated on natural seleniferous soil. Firstly, the Se content of brown rice in 80 rice germplasm resources was determined, which ranged from 0.0249-0.1426 mg/kg, showing obvious differences. Next, two cultivars with a significant difference in Se content in brown rice, i.e., cv. Wuyangeng (high) and cv. IR68144 (low), were used to study the distribution pattern of Se in different organs. Moreover, the physiological mechanism of the Se content diversity in brown rice of the two cultivars was explored preliminarily. The results showed that the Se content of cv. Wuyangeng was 2-3 times higher compared to cv. IR68144. However, the Se contents of cv. IR68144 root and leaf were significantly higher than that of cv. Wuyangeng under both natural soil environment and artificial nutrient solution culture. Cv. IR68144 also had a stronger root Se accumulation coefficient and shoot Se transfer coefficient. Consequently, it can be inferred that the stronger Se transfer ability from stem to grain was the key reason for the higher Se content in brown rice cv. Wuyangeng than in cv. IR68144.

Keywords: selenium biofortification; rice cultivar; Oryza sativa L.; plant organ; limiting step (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:65:y:2019:i:1:id:603-2018-pse

DOI: 10.17221/603/2018-PSE

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