摘 要: | Rice bacterial blight(BB)resistance has been amajor target in rice breeding programs.How-ever,the result of resistance identificationwith traditional method is easily affected byenvironmental factors.This problem would besolved through marker assisted selection.Sofar,most of the known BB resistance genes,such as Xa-1,Xa-2,Xa-3,Xa-4,xa-5,Xa-
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