Transcriptional Sequencing and Gene Expression Analysis of Various Genes in Fruit Development of Three Different Black Pepper (Piper nigrum L.) Varieties

Table 1

Summary of transcriptome data from two assemblers after redundancy removal and a previously published black pepper fruit transcriptome.

Assembler	Soap-Trans				CLC	Trinity^a
k-mer	21	23	27	31	45	—
N50 size	1,641	1,639	1,653	1,654	1,020	1,757
N50 no.	13,546	14,074	14,587	14,809	26,118	—
Unigene number	61,006	63,669	66,025	66,906	113,854	44,061
Genome size	67,404,744	70,065,254	72,708,828	73,742,859	93,269,479	59,262,045
Average length	1,105	1,100	1,101	1,102	819	1,345
Min contig	200	200	200	200	295	300
Max contig	9,932	9,884	9,781	12,965	12,375	15,000
Mapping				72%	75%	—

Note: the assembly statistics are from two assemblers after the removal of redundant contigs from the initial assembly. ^aData from Hu et al. [15].