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| Titel: |
Accumulation and Role of Ions (Ca2+, Mg2+, SO42-) on Salt Tolerance in Triticum turgidum L. |
| Auteur: |
M.R. Hadi S.M. Khiyam-Nekoie R. Khavarinejad N.A. Khosh Kholgh Sima P. Yavari |
| Verschenen in: |
Journal of biological sciences |
| Paginering: | Jaargang 8 (2008) nr. 1 pagina's 143-148 |
| Jaar: |
2008 |
| Inhoud: |
Understanding the mechanisms of salt tolerance and the physiological and biochemical factors are very important in plant crops. Salinity-minerals (Ca2+, Mg2+, SO42-) interactions, which have been shown to be important in plants grown in saline conditions, were studied in durum wheat (Triticum turgidum L.). Two genotypes of durum wheat, one salt-tolerance (ICDW751) and the other salt-sensitive (ICDW324) were grown in nutrient solution containing 0, 50, 100 and 150 mM. NaCl. Amount of minerals of Ca2+, Mg2+ and SO42-were determined in the shoot and roots. Usually, salinity reduced Ca2+ and Mg 2+ contents in shoot and root of both genotypes, mainly in the salt-sensitive genotype. Apparently, SO42- content in shoot increased as the medium salinity increased, especially in the salt- tolerance genotype. Salinity increased significantly Na+/Ca2+ ratio and sodium adsorption ratio (SAR) = Na+/(Ca2++Mg2+)½ of shoot and root in both genotypes, mainly in the salt-sensitive genotype. Thereby, we suggested that ratio of Na+/Ca2+ and especially amount of SAR in durum wheat (Triticum turgidum L.) are suitable for discrimination salt-tolerance genotype from salt-sensitive genotype. |
| Uitgever: |
Asian Network for Scientific Information (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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