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Table 1 Relative lengths and arm ratios of mitotic metaphase chromosomes of So. bicolor and three Sa. spontaneum accessions

From: Reconstruction of karyotypic evolution in Saccharum spontaneum species by comparative oligo-FISH mapping

Chr.

So. Bicolor BTx623 (2n = 2x = 20)

Sa. spontaneum Np-Xa (2n = 4x = 40)

Sa. spontaneum 2012–46 (2n = 6x = 54)

Sa. spontaneum AP85–441 (2n = 4x = 32)

Arm ratio

Relative length (%)

Arm ratiob

Relative lengthc (%)

Arm ratio

Relative length (%)

Arm ratio

Relative length (%)

1

1.34 ± 0.24

14.52 ± 1.62

1.08 ± 0.02

13.24 ± 0.09

1.13 ± 0.10

14.61 ± 1.09

1.15 ± 0.15

15.11 ± 2.15

2

1.22 ± 0.17

10.91 ± 1.10

1.11 ± 0.01

10.65 ± 0.06

1.18 ± 0.19

10.12 ± 1.20

1.12 ± 0.10

17.68 ± 2.29

3

1.12 ± 0.09

10.98 ± 0.65

1.12 ± 0.07

10.60 ± 0.60

1.18 ± 0.12

14.29 ± 1.36

1.12 ± 0.10

10.85 ± 0.54

4

1.19 ± 0.11

9.64 ± 0.59

1.12 ± 0.02

9.62 ± 0.11

1.23 ± 0.20

12.12 ± 0.98

1.21 ± 0.18

10.24 ± 0.73

5

1.16 ± 0.14

9.60 ± 0.49

1.02 ± 0.01

9.18 ± 0.09

/

/

/

/

6

1.28 ± 0.25

9.11 ± 0.54

1.28 ± 0.10

8.54 ± 0.33

1.15 ± 0.13

13.10 ± 0.88

1.13 ± 0.11

13.16 ± 0.88

7

1.14 ± 0.11

9.48 ± 0.64

1.07 ± 0.03

9.84 ± 0.20

1.22 ± 0.16

11.40 ± 0.77

1.25 ± 0.17

12.27 ± 1.23

8

1.16 ± 0.14

8.49 ± 0.68

1.06 ± 0.01

8.82 ± 0.05

1.14 ± 0.10

7.33 ± 0.77

/

/

9

1.15 ± 0.12

8.58 ± 0.79

1.12 ± 0.02

10.19 ± 0.10

1.15 ± 0.12

7.76 ± 0.97

1.26 ± 0.21

11.32 ± 0.61

10

1.14 ± 0.06

8.70 ± 0.81

1.19 ± 0.05

9.33 ± 0.32

1.13 ± 0.09

9.27 ± 1.16

1.12 ± 0.10

9.38 ± 0.66

  1. aThe Np-X karyotype data were obtained from our previous published article (Meng et al. 2019, Theoretical and Applied Genetics)
  2. bArm ratio, length of the long arm/length of the short arm
  3. cRelative length, chromosome length/genome length
  4. Measurement was performed on each chromosome in 10 metaphase cells