Table 2.

Codon usage for ORFs of S5, S7 and S9 in Rice black-streaked dwarf virus and Southern rice black-streaked dwarf virus

Virus	ORFs	ENC	CBI	GC3S	GCC
RBSDV	ORF5–1	49.982	0.323	0.329	0.372
	ORF5–2	55.334	0.312	0.384	0.378
	ORF7–1	45.780	0.498	0.231	0.354
	ORF7–2	39.958	0.598	0.227	0.324
	ORF9–1	47.382	0.422	0.298	0.356
	ORF9–2	43.354	0.541	0.189	0.296
SRBSDV	ORF5–1	51.455	0.323	0.365	0.379
	ORF5–2	46.595	0.342	0.334	0.360
	ORF7–1	41.394	0.569	0.210	0.343
	ORF7–2	43.882	0.539	0.217	0.304
	ORF9–1	45.992	0.445	0.291	0.356
	ORF9–2	47.494	0.516	0.256	0.322