<FONT face="Verdana">Accumulation Characteristics of  Cadmium and Lead  in  Aboveground Organs of  Indica Hybrid Rice  as Affected by Different Soil  Types</FONT>

FAN  Zhongliang,JI Hui,YANG Fei,WU Qi,ZHANG Weijian

doi:10.3969/j.issn.1001-7216.2010.02.13

2010 , Vol. 24 >Issue 2: 183 - 188

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.02.13

研究报告

Accumulation Characteristics of Cadmium and Lead in Aboveground Organs of Indica Hybrid Rice as Affected by Different Soil Types

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1 Institute of Applied Ecology, Nanjing Agricultural University, Nanjing 210095, China; 2 Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; *Corresponding author, E-mail: zhangweij@caas.net.cn

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-03-10

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Abstract

Pot experiments were conducted to investigate the accumulation characteristics of Cd and Pb in aboveground organs of indica hybrid rice（K you 818) in two typical soils (paddy soil and alluvial soil) in 2008. There were significant differences in the concentrations of Cd and Pb in different aboveground organs, following an order of stem and sheath>leaves>milled rice(P<0.05). The inhibitory effects of the two heavy metals on plant height and single panicle weight were significantly greater in the paddy soil than those in the alluvial soil. In addition, the inhibitory intensity increased with the rising concentrations of the heavy metals. In comparison to the control, the single panicle weight showed the largest declines of 28.4% and 36.6% while the concentrations of exogenous Cd and Pb reached 7 mg/kg and 900 mg/kg, respectively. The bioavailability of the heavy metals exhibited significant differences between the two soil types. Consequently, the concentrations of Cd and Pb in various rice organs were significantly higher in the paddy soil than those in the alluvial soil (P<0.05).

Key words： rice; heavy metal; accumulation; cadmium; plumbum; paddy soil; alluvial soil

Cite this article

FAN Zhongliang,JI Hui,YANG Fei,WU Qi,ZHANG Weijian . Accumulation Characteristics of Cadmium and Lead in Aboveground Organs of Indica Hybrid Rice as Affected by Different Soil Types[J]. Chinese Journal OF Rice Science, 2010 , 24(2) : 183 -188 . DOI: 10.3969/j.issn.1001-7216.2010.02.13

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