Table 2. Component of ra-siRNAs of G. barbadense.

Type	Cotton Sub-genome
	A2	D5	Both A2 and D5	Total
Transposon	31,102	49,934	14,973	66,063
DNA/MuDR	21,050	30,748	9,794	42,004
DNA/En-Spm	6,144	12,550	3,305	15,389
DNA	2,636	4,830	1,304	6,162
DNA/hAT	1,150	1,549	486	2,213
DNA/Harbinger	42	152	32	162
DNA/TcMar	80	96	52	124
DNA/Mite	0	6	0	6
RC/Helitron	0	3	0	3
Retrotransposon	2,091,427	2,213,611	857,458	3,447,580
LTR	796,849	922,373	343,074	1,376,148
LTR/Gypsy	737,565	536,980	282,674	991,871
LTR/Copia	216,186	227,997	89,959	354,224
Non LTR	37,724	56,264	18,520	75,468
Retroelement	301,759	467,958	122,859	646,858
LINE	1,344	2,037	372	3,009
SINE	0	2	0	2
rRNA	25,763	22,994	20,772	27,985
Simple repeat	15,852	7,133	5,641	17,344
Others	14	148	8	154
Total	2,164,158	2,293,820	898,852	3,559,126