Table 1 Transcriptome assembly statistics

	I. batatas	I. trifida	D. dissectus	D. quinquefolius
总计reads (PE 150 bp)	39,632,572	15,657,942	44,877,650	64,267,290
No. of transcripts	245,140	119,153	254,174	363,820
%GC	40.97	42.1	39.67	39.37
Transcript N50	952	1125	1277	952
Median transcript length	416	455	446	417
Mean transcript length	663.57	732.7	777.18	663.29