Table 1 The classification and annotation of small RNAs in inbred lines and hybrid combinations

exon antisense

36,845

0.9

32,679

1.01

29,745

0.88

32,504

1.08

32,529

1

29,376

0.94

31,911

1.02

35,795

1.1

exon sense

351,662

8.63

310,750

9.6

267,915

7.91

252,898

8.41

281,694

8.69

363,730

11.62

318,596

10.22

246,757

7.6

intron antisense

65,219

1.6

58,022

1.79

53,706

1.59

50,573

1.68

54,489

1.68

49,937

1.59

53,732

1.72

58,784

1.81

intron sense

116,696

2.86

111,391

3.44

89,864

2.65

97,169

3.23

107,592

3.32

103,050

3.29

107,009

3.43

102,996

3.17

miRNA

1391

0.03

1720

0.05

1347

0.04

1476

0.05

1530

0.05

1529

0.05

1646

0.05

1684

0.05

rRNA

362,479

8.89

279,587

8.64

341,718

10.09

299,149

9.95

340,457

10.5

286,987

9.17

303,380

9.73

302,534

9.32

repeat

13,748

0.34

11,972

0.37

11,471

0.34

10,243

0.34

11,117

0.34

9977

0.32

10,564

0.34

11,587

0.36

snRNA

11,233

0.28

10,058

0.31

11,230

0.33

11,567

0.38

11,788

0.36

12,166

0.39

11,238

0.36

11,754

0.36

snoRNA

7598

0.19

7956

0.25

6524

0.19

7109

0.24

6330

0.2

6972

0.22

6376

0.2

6635

0.2

tRNA

122,738

3.01

68,283

2.11

103,502

3.06

90,753

3.02

86,469

2.67

79,262

2.53

72,217

2.32

82,897

2.55

unannotated sequences

2,987,131

73.27

2,343,364

72.42

2,470,517

72.93

2,154,506

71.63

2,307,998

71.19

2,188,282

69.88

2,201,162

70.6

2,384,698

73.46