2.2　Repeat sequences in the genome

Five softwares were used to find transposons and TRF(Tandem Repeat Finder)was used to identify the tandem repeat sequences.In total，we identified 2，025，242bp repeat sequences，comprising 5.07%of the genome.No large scale dispersed segmental duplication was observed.Of the assembled genome，tandem repeat sequences comprised 0.57% and transposable elements(TE)were about 4.6%.Among the TEs，long terminal repeats(LTR)and non-LTR transposons comprised 1.43% and 3.17%of the genome，respectively.Among the non-LTR transposons，DNA transposons(classⅡtransposons)comprised 0.52% of the genome.The elements of DNA transposons mainly fell into four classes：Activator(h AT)，Enhancer(En/spm)，Harbinger and Mariner(Tc1).(https://www.daowen.com)