Genetic diversity and relationships within sweet kernel apricot and related Armeniaca species based on sequence-related amplified polymorphism markers

► Variation within sweet kernel apricot and related Armeniaca species was detected. ► These accessions had a similarity range from 0.55 to 0.91. ► Sweet kernel apricot separated from Armeniaca species at the similarity of 0.55. ► All sweet kernel apricots were divided two clusters at the similarity of 0.58. ► Extensive genetic variation existed among sweet kernel apricot.