%0 Journal Article %A Khalilvand Behrouzyar, Ebrahim, Yarnia, Mehrdad, Darbandi, Samad, Alyari, Houshang %T Effect of drought stress on some morphological characteristics of two sunflower (Helianthus annuus) hybrids at different planting densities %J Agroecology Journal %V 3 %N 3 %P 1-13 %D 2007 %R %U https://sanad.iau.ir/fa/Article/1124357