Spring frost injury is one of the most limitation factor in apricot production. in order to evaluation apricot varieties under spring frost condition , an experiment was conducted on 8 comericial cultivar accompany with 18 local genotypes of apricot in a RCBD arrange with 3 replication. in sanandaj station during 2005 - 2008. date of blooming , flowering period, relative water content, proline and K content in pistil of flower, severity of frost injury in flowers, fruit set, date of fruit ripe, yield were measured.
