Abstract:

Highland Barley(Hordeum Vulgare L.var.nudum Hook.f ) is an important grain crops in Qinghai Province. The karyotypes of four primary Highland Barley cultivars in Qinghai Province were studied by applying pressing method. The results indicated that: the karyotype formula of beiqing3 was 2n=2x=14=12m+2msat. the karyotype formula of beiqing6 was 2n=2x=14=10m+4smsat. the karyotype formula of dulihuang was 2n=2x=14=12m+2msat. the karyotype formula of kun12 was 2n=2x=14=10m+4msat. The karyotype of four cultivars were Stebbins-1. The result of the phylogenetic analysis of four cultivars shows that the karyotypes of 4 cultivars differentiate in some degree, which may be caused by different genetic backgrounds.