Figure 6 . Length and number distribution of CDS from unigenes (A), Venn diagram of LncRNAs predicted by CPC, PLEK, CNCI, Pfam methods (B), and density and length distributions of LncRNAs and mRNAs (C) inM. rosenbergii .
SSR has abundant polymorphisms as microsatellite markers. A total of 84,627 sequences were analyzed to identify 160,010 SSRs. The number of SSRs present in compound formation was 13,996. Most of the SSRs detected were mono-nucleotide repeats (80.10%), followed by di-nucleotide repeats (9.84%), tri-nucleotide repeats (9.56%), tetra-nucleotide repeats (0.44%), hexa-nucleotide repeats (0.04%) and penta-nucleotide (0.02%) (Table S4).
Transposable elements are DNA sequences able to move around within the genome and impact genome evolution. 37 SINEs, 245 LINEs, 42 LTR RNA types, and 950 DNA types of transposons were identified, and transposon content accounted for 0.11% of the total transcript length.