Table 2.

Length distribution of the transcripts and unigenes clustered from the de novo assembly

Category	Transcript	Unigene
All (> = 200 bp)	415,429	143,080
> = 500 bp	273,632	56,929
> = 1000 bp	181,131	30,038
N50	1,747	1,239
N90	497	277
Total length	236,414,577	53,791,217
Max length	14,995	14,995
Min length	201	201
Average length	1111.61	707.9

Note: The N50 size is computed by sorting all transcripts from largest to smallest and by determining the minimum set of transcripts whose sizes total 50% of the entire transcript and unigene was the same; N90 was counted in the similar way.