African Journal of Agricultural Research
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Article Number - B5AD3DE39055


Vol.7(42), pp. 5621-5627 , November 2012
DOI: 10.5897/AJAR12.1613
ISSN: 1991-637X



Full Length Research Paper

Translocation of metals in two leafy vegetables grown in urban gardens of Ntoum, Gabon


 

Jean Aubin ONDO1,2*, Pascale PRUDENT1, Richard MENYE BIYOGO2, Jacques RABIER3, François EBA2 and Mariane DOMEIZEL1

 

 

 

 




 

1Aix-Marseille Université, CNRS, LCE, FRE 3416, 13331 Marseille, France.

2Laboratoire pluridisciplinaire des sciences de l’Ecole Normale Supérieure, B. P. 17009 Libreville, Gabon.

3Equipe BBE, UMR-CNRS/IRD 6116 IMEP, Aix-Marseille université, case 97, 3, place Victor-Hugo, 13331 Marseille cedex 03, France.


Email: laplus_ens@yahoo.fr






 Accepted: 05 October 2012  Published: 30 November 2012

Copyright © 2012 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


 

The aim of this study was to investigate the properties of cultivated urban soils and metal concentrations in these soils and in roots and leaves of the crops Amaranthus cruentus (amaranth) and Hibiscus sabdariffa(roselle). The soil physicochemical properties showed a poor fertility rate of cultivated soils. The metal concentrations in soils were in the range of concentrations for uncontaminated agricultural soils. The ranges of concentrations of metals were as follows: Aluminium (Al), 239-1222 mg/kg; cadmium (Cd), < 0.3. mg/kg; copper (Cu), 9.3-31.7 mg/kg; iron (Fe), 166-617 mg/kg; manganese (Mn), 18.1-187.5 mg/kg; lead (Pb), < 2.36 mg/kg; zinc (Zn), 25.2-66.9 mg/kg. The accumulation of metals was as follow: In leaves, Fe > Al > Mn > Zn > Cu >Pb; in roots, Al > Fe > Zn > Mn > Cu > Pb. Al and Fe were weakly bioaccumulated but their concentrations were high. Cu and Mn were more accumulated in leaves than roots for amaranth and roselle. The leaves of amaranth were found to accumulate soil Cu and Zn more efficiently than other tissues of both vegetables. The translocation factor was in the order: Mn > Cu > Fe > Zn > Al, and when this value was compared between amaranth and roselle, it was observed to be higher in amaranth than in roselle. The concentrations of the essential elements Cu and Mn in roselle, and Cu, Fe, Mn and Zn in amaranth indicate that these leafy vegetable are a good nutrient sources.

 

Key words: Soil, edible vegetables, metals, bioconcentration factor (BCF), translocation factor (TF).


APA (2012). Translocation of metals in two leafy vegetables grown in urban gardens of Ntoum, Gabon. African Journal of Agricultural Research, 7(42), 5621-5627.
Chicago   Jean Aubin ONDO, Pascale PRUDENT, Richard MENYE BIYOGO, Jacques RABIER, François EBA and Mariane DOMEIZEL        . "Translocation of metals in two leafy vegetables grown in urban gardens of Ntoum, Gabon." African Journal of Agricultural Research 7, no. 42 (2012): 5621-5627.
MLA Jean Aubin ONDO, et al. "Translocation of metals in two leafy vegetables grown in urban gardens of Ntoum, Gabon." African Journal of Agricultural Research 7.42 (2012): 5621-5627.
   
DOI 10.5897/AJAR12.1613
URL http://www.academicjournals.org/journal/AJAR/article-abstract/B5AD3DE39055

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