modeling the thermal adapability of the olive (olea europaea l.) in iran

abstract temperature is the most important environmental factor that affects flowering and fruiting. the temperatures induce reproduction and cause damaging to tree or its crop.this paper analyzed daily minimum temperatures 0.0oc, and maximum temperatures 12.5 oc from october 1 to may 31 at nine sites in olive producing and cultivating regions, and one control station, using thermal adaptability model. to determine the probability of high temperature damage during flowering within each region, temperatures equal to or higher than 37.8 oc were considered. to determine damage produced by last frost, temperature equal to or below 0 oc that occurred during flowering within each region, was considered. the model has introduced indicates that shiraz, manjil, gorgan, gonbad and sarpol zohab stations show temperature patern similar to olive producing regions. keywords: temperature; damage index; vernalization; olive, iran.