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| Cd accumulations and transfer characteristics of Cd pollution-safe rice materials under different Cd treatments |
| Received:August 12, 2016 |
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| KeyWord:rice;Cd pollution-safe materials;accumulation;transfer |
| Author Name | Affiliation | E-mail | | ZHANG Man | College of Resource Science, Sichuan Agricultural University, Chengdu 611130, China | | | ZHANG Xi-zhou | College of Resource Science, Sichuan Agricultural University, Chengdu 611130, China | zhangxzhou@163.com | | LI Ting-xuan | College of Resource Science, Sichuan Agricultural University, Chengdu 611130, China | | | YU Hai-ying | College of Resource Science, Sichuan Agricultural University, Chengdu 611130, China | | | ZHANG Lu | College of Resource Science, Sichuan Agricultural University, Chengdu 611130, China | | | HUANG Fu | College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China | | | ZHANG Yi | Ganzi Bureau of Agriculture and Animal Husbandry, Kangding 626000, China | |
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| Abstract: |
| A pot experiment was carried out to study the Cd translocation characteristics and Cd accumulation characteristics in different leaf parts of the Cd-Safe Rice Cultivars(D62B) with the control of a common rice cultivar(Luhui17). The biomass of different tissues of D62B significantly decreased with the increasing Cd concentrations in soils. Compared with the treatment of 1 mg·kg-1 Cd, the biomass of D62B decreased by 43.74%, 45.72% and 40.24% when exposed to 8 mg·kg-1 Cd. Cd concentrations in tissues of the aboveground part of D62B were significantly lower than those of Luhui17 during different growth stages. At the mature stage, Cd concentrations in panicle of D62B were only 44.52%~54.59% of those of Luhui17. The retention rate in roots of D62B were significantly higher than those of Luhui17, and the translation coefficients of D62B were significantly lower than those of Luhui17. Besides, at the heading stage, Cd concentrations in the three upper leaves of D62B, referred to as the three functional leaves, were significantly lower than those of Luhui17. Cd accumulations in the three functional leaves of D62B were 72.10% and 78.00% of those of Luhui17 with the treatment of 4 mg·kg-1 Cd and 8 mg·kg-1 Cd. These results indicated that the great accumulation ability in root and low accumulation in the three functional leaves contributed much to the rice safety when exposed to Cd. Furthermore, these results would provide theoretical basis for the cultivation and application of low Cd accumulation cultivars. |
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