Chromosome number and karyotype analysis of Halostachys caspica

Halostachys caspica is a dominant halophyte, which is widely distributed in Xinjiang desert region. The chromosome number and karyotype of H.caspica were analyzed by using cytological observation on the roottip. The results showed that the chromosome number of H.caspica is 18 with karyotype formula being 2n=2x=18m. There are two satellite chromosomes in the forth chromosome. The karyotype of H.caspica belongses to 1A type.