Abstract: The research progress of distant hybridization in the field of plants breeding in recent years was reviewed comprehensively. The characteristics and mechanisms of post, ertilization barriers were analyzed on the view of embryo abortion and hybrid sterility. Meanwhile,the effective methods to overcome these barriers were mainly reviewed,including embryo rescue ( Ovary ovule and embryo culture) to prohibit its abortion to restore its fertility and other methods such as chemical treating and back}rossing. At last,doubling chromosomes,the future research emphasis in this field was suggested as revealing the molecular mechanism of embryo abortion in distant hybridization by using the proteomics combined with molecular physiological methods.

Key words: Distant hybridization, Reproductive barrier, Post-fertilization barrier, Embryo abortion, Hybrid sterility

CLC Number: 

• S68.03