Paper Details

The effect of salinity stress on ions distribution in panicle, flag leaf  and  leaf  sheaths  of  two  Rice  (Oryza  sativa  L.)  genotypes differing in salt tolerance

Saeed Saeedipour

DOI: https://dx.doi.org/10.12692/ijb/4.10.269-275

Int. J. Biosci. 4(10), 269-275. May, 2014. (PDF)

Abstract:

The influence of NaCl on ions accumulation was investigated in panicle, leaf sheath and flag leaf of two rice genotypes differing in salt tolerance. In comparison, Na+ content in all part of sensitive cultivar (IR29) was more than tolerant one (FL485) under salt condition. There was a significant (P ≤ 0.01) reduction in flag leaf, leaf sheath and panicle K+ concentration in both cultivars result in salt treatment. Salinization of the medium caused a significant accumulation of C1-ions in all parts of stressed IR29 especially in flag leaf and leaf sheath in compare to their control treatment. Opposite to that observed in stressed IR29 Cl-accumulation, a marked decline was found during experiment in all part of salt-tolerant cultivar FL485 except in leaf sheath. Ca2+ accumulation in tolerant FL485 cv. was significantly more than sensitive IR29 cv. at all part of plant. Upon salinization, the Mg2+ content of leaf sheath and flag leaf of both cultivars significantly reduced in contrast to those control treatment, while no significant changes was observed in Mg2+ panicle concentration of both cultivars.