Table 2. Effect of k-mer size on assembling performance of tea transcriptome.

K-mer	Total number of sequence	Average length of sequence (bp)	Maximum length of sequence (bp)	Average coverage	Number of sequence length 1000 bp and above	Percentage of transcripts (1000 bp and longer)
19mer	64,696	493.95	6,984	110.71	8,237	12.731
21mer	57,767	505.44	5,828	111.28	7,996	13.841
23mer	50,433	492.56	7,403	112.11	6,725	13.334
25mer	42,916	459.40	4,848	113.73	4,967	11.573
27mer	33,293	411.41	4,198	116.35	2,762	8.296
29mer	19,677	345.39	3,266	123.92	901	4.578