Abstract
914 marks(848 SSR and 66 SFP)were used to find the genomic polymorphism between the blast resistant rice variety Xiangzi3150 and the blast susceptible variety CO39.The results showed that expected bands were amplified from 96.39% of 881 markers(815 SSR and 66 SFP),among which 220 polymorphic tags were identified and 24.10% were.The polymorphism rate of the SSR mark(23.58%) was lower than that of the SFP mark(30.30%).The rate of polymorphic marks on the 12 chromosomes was different.Chromosome 10 had the highest rate(30.00%) and chromosome 9 had the lowest rate(14.55%).SSR marks with different units also showed a significant difference in polymorphism rate.The SSR marks with tetranucleotide repeats had the highest polymorphism rate(27.96%),followed by the repetitive dinucleotide,repetitive trinucleotide and repetitive single-nucleotide tags,respectively.
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