اثر سالیسلیک اسید وتنش کمبود آب بر اختلاف دمای کانوپی گندم رقم چمران

In order to study Effects Salicylic acid and water deficit stress on canopy temperature difference (CTD) of wheat chamran cultivar an experiment was conducted at the Safiabad agricultural research center, Dezful, in two years 2012 and 2013. The results of experiment showed Stress and year were not affected on canopy temperature difference (CTD). Effect usage time salicylic acid and its dosage were affected on CTD. The low dosage (. /7mmolar) in growth vegetative had the most CTD. Grain yield had positive and significant correlation canopy temperature difference from at first plant growth until flowering stage. It can be concluded from this study that salicylic acid in vegetative and reproductive wheat due to increase CTD for increase to grain yield for defiance mechanism was important.