TheE ffecto f salt Stress(N acl) on somec ultivarso f wheat (Triticuma estivum\ Phenolic Compounds

Crops that control weeds by allelochemicalsa re receiving increaseda ttention.A llelochemical ooncentrationa nd allelopathici nteractionsa re affectedb y invironmentals tressc onditions.I t has been demonstratedth at phenolic compoundsa re involved in wheat allelopathicp otential. The presents tudy was conducted to investigated the effect of salt stress (0, 50,150 and 200mM NaCl) on phenolic compounds of three cultivars of Triticum aestivum (Pastor, Tagan and Zagros) and T. durum (cAria). Ther esultsin dicatedth at phenolicc ompoundsra tei n botho f rootsa nd leavesd ecreaseads t heconcentratioonf salt increasedto 100 mM with the exceptiono f Arya cv. and therew as increased phenolic compounds level up to 200 mM NaCl except of Tagan cv. Leaf and root alcoholic extracts analyzed by TLC. TLC chromatogram showed the number of phenolic compounds increased with tncreasinpgh enolicc ompoundsI.n generasl alts tressc hangep henolicq ualitya nd quantitya ndm ay be increasael lelopathipc otentiaol f wheat.