%0 Journal Article %T MORPHOLOGICAL RESPONSES OF ORNAMENTAL SUNFLOWER TO PUTRESCINE TREATMENT UNDER DROUGHT CONDITIONS %A Kahrobaeian, Maryam %A Nemati, Seyyed Hossein %A Majid Rahemi %A Bahman Kholdebarin %A Tehranifar, Ali %J Applied Ecology and Environmental Research %@ 1589-1623 %D 2019