Research Progress of Blast Resistance Genes in Rice

Rice blast,a widespread fungal disease of rice,severely decreases the yields and qualities of rice.The most economical,effective and Green method to resist rice blast is researching resistance varieties or improveing the disease resistance of rice.Therefore,rice blast resistance genes(R genes) is considered as a hot field to phytopathologists and breeders.64 rice blast resistance sites and 75 major genes have been reported and 15 rice blast resistance genes have been cloned up to Aug.,2010.In this review,the research progresses in China and abroad were reviewed;the structure and function of clonal resistance genes were compared and analyzed;two principal techniques that resist rice blast were introduced.With locating and successfully cloning more and more resistance genes,functional genes assisted breeding would be one of the major breeding measures in the future,which will serve to rice production along with molecular markers assisted breeding.