Table 1. Statistical results of reads mapped to reference genome and expressed genes in different libraries.

Sample	Total pair reads	Mapped pair reads (Ratio)	Known gene num	Novel gene num
A2	55729080	49972699(89.67%)	26128	386
A4	65402194	58874465(90.02%)	26463	386
N2	58025908	51001759(87.89%)	26559	381
N4	56371344	50670138(89.89%)	25914	372