Differences in response of some tunisian chickpea genotypes (cicer arietinum l.) to salinity

Abdelmajid, Krouma (2009) Differences in response of some tunisian chickpea genotypes (cicer arietinum l.) to salinity. Pakistan Journal of Botany, 41 (6). pp. 3081-3091.

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Abstract

A greenhouse experiment was conducted to assess the effects of salt stress on plant growth and mineral accumulation in three Tunisian chickpea genotypes (Cicer arietinum L.). NaCl was added and salinity was maintained at 0, 25 and 50 mM NaCl (EC: 0, 2.65 and 5.3 mS.cm-1 respectively). In comparison to Chetoui and Kesseb, Amdoun maintained a high level of whole plant growth. Genotypic differences were observed at the level of Na+, Cl- and K+ distribution between different plant organs. Amdoun showed the lowest leaf Na+ and Cl- concentrations and the highest K+ concentrations in these organs, particularly in the presence of high salinity (50 mM). These findings suggest that the relative salt tolerance of Amdoun may be due to its K+/Na+ discrimination. This genotype seem to be able to protect its photosynthetic apparatus against the toxic Na+ and Cl- ions, and to ensure an appropriate K+ supply to the plants under salt stress.

Item Type: Article
Author Affiliation: Centre of Biotechnology, Borj Cedria Ecopark, BP 901, Hammam Lif 2050, Tunisia
Subjects: Crop Improvement > Genetics/Genomics
Divisions: Chickpea
Depositing User: Mr T L Gautham
Date Deposited: 02 Dec 2010 21:45
Last Modified: 29 Dec 2010 20:04
Official URL: http://www.pakbs.org/pjbot/PDFs/41(6)/PJB41(6)3081...
URI: http://eprints.icrisat.ac.in/id/eprint/876

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