%0 Conference Proceedings %T Evaluation of susceptibility of 12 Walnut genotypes to sudden cold of 2008 and frost injury %A Davarynejad, Gholam Hossein %A Aryanpooya, Zeinab %A ا.فهادان %A ا.داوری نژاد %J ششمین کنگره علوم باغبانی %D 2009