Determination of genome size and chromosome ploidy of selected taxa from Prunus armeniaca by flow cytometry

•Chromosome ploidy of selected taxa from Prunus armeniaca by flow cytometry were diploids.•Genome size of P. armeniaca varied from 0.590 to 0.708 pg.•Genome size of P.armeniaca has no significant correlation with longitude, latitude and altitude.•Genome size of P. armeniaca was highly stable.