%0 Journal Article %T Alleviation of drought Stress Effects by Exogenous Application of Spermidine and Salicylic Acid on Hollyhock (Alcea rosea) %A Oraee, Toktam %A Shoor, Mahmoud %A Tehranifar, Ali %A Nemati, Seyyed Hossein %J Journal of Ornamental plants %@ 2251-6433 %D 2019