The responses to salinity of dry matter production and remobilization of two wheat (Triticum aestivum L.) cultivars were studied using a factorial design experiment with three replications in greenhouse. Salinity treatments of S0 =0, S1 =2.5, S2=5g/l NaCl in water were used starting 4 weeks after sowing. The two wheat cultivars were Inia- 66 and Sholeh, of which the latter is known as a salt resistant one. The results from both cultivars showed significant reductions in total dry matter production and significant increases in dry matter remobilization under saline conditions. Sholeh showed more resistance in vegetative growth than Inia-66 , whereas in reproductive growth and grain production, Inia- 66 showed better performances. Therefore, the grain dry weight was significantly higher in Inia-66 and its Harvest Index (HI) increased with salinity. All these changes were associated with more reduction in grain filling period of Inia-66, being significantly lower than Sholeh. From the results obtained it may be concluded that a portion of HI increaments in Inia-66 could be attributed to higher dry matter remobilization in saline conditions.
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