{!v.BatchInstance.Discount_Type__c}/*here the values it is displaying.*/
         <td>
            <ui:inputselect class="slds-input" value="{!v.BatchInstance.Discount_Type__c}" aura:id="disctype" change="{!c.discountvalidation}">
             <option value=""> - </option>
             <option value="ServicePremium"> ServicePremium </option>
             <option value="Service Rapide"> Service Rapide </option>
              <option value="MOD/MOQ">     MOD/MOQ </option>

             </ui:inputselect>
        </td>