A dense SNP genetic map constructed using restriction site-associated DNA sequencing enables detection of QTLs controlling apple fruit quality

Table 1 Quality evaluation of restriction-site associated DNA sequencing data in 318 hybrid seedlings and their parents

Restriction enzyme	Plant materials	Total reads (M)	Total bases (Gb)	GC (%)	Q20 (%)	Coverage (×)
EcoRI	Jonathan	17.12	1.58	37.33	97.04	~2.13
	Golden Delicious	19.04	1.80	37.15	96.95	~2.43
	Progeny	3972.27	371.66	39.70	96.16	~1.57
HindIII	Jonathan	22.33	2.10	39.32	96.78	~2.83
	Golden Delicious	18.77	1.76	39.26	96.79	~2.38
	Progeny	3164.47	296.27	39.37	96.86	~1.26

Data of progeny were collected from all 318 individuals derived from ‘Jonathan’ × ‘Golden Delicious’. The size of apple whole genome referenced the estimated genome size 742.3 Mb by Velasco et al. [4]