Table 2. Statistics of de novo transcriptome assembly and annotation.

Sample	Num. ofcontigs	Min. length(bp)	Max. length(bp)	N50	Annotation byBLASTX (%)	Reads mapped topeach genome (%)	Reads mapped back tocontigs (%)
HSA	44477	200	11888	1484	94.54	80.73	79.42
HSO	41283	200	6888	1558	93.16	79.75	87.23
HCA	38920	200	7145	1204	91.63	81.26	82.39
HCO	48562	200	8256	1444	93.49	79.22	85.69

De novo assembley was performed using Trinity package following the standard manual. Annotation was achieved using BLASTX program. Mapping statistics of reads to the transcriptome assemblies and peach genome are also provided, which was obtained using Bowtie v2 package.

Abbreviations: HSA, stressed anther of H genotype; HCA, control anther of H genotype; HSO, stressed ovary of H genotype; HCO, control ovary of H genotype.