Table 1 Illumina sequencing data and results of de novo assembly
| Â | Sterile | Fertile | Total |
|---|---|---|---|
Reads | |||
 Clean reads | 52,606,810 | 52,936,673 |  |
 Q20 (%) | 96.61 | 97.29 |  |
 Q30 (%) | 92.53 | 94.27 |  |
 GC content (%) | 45.89 | 45.65 |  |
Contig | |||
 Total number |  |  | 117,332 |
 Total length (nt) |  |  | 105,669,013 |
 Mean length (nt) |  |  | 901 |
 N50 (nt) |  |  | 1415 |
Unigene | |||
 Total number |  |  | 80,851 |
 Total length (nt) |  |  | 85,236,698 |
 Mean length (nt) |  |  | 1054 |
 N50 (nt) |  |  | 1586 |
 Distinct clusters |  |  | 43,191 |
 Distinct singletons |  |  | 37,660 |