Plant Breeding and Biotechnology

Indexed in /covered by CAS, KoreaScience & DOI/Crossref:eISSN 2287-9366   pISSN 2287-9358

Table. 2.

Table. 2.

FISH karyotype analysis of the colchicine-induced tetraploid Platycodon grandiflorus ‘Etteumbaek’ showing chromosomal lengths, types and number FISH signals of rDNA observed.

Chr. no. Chromosome length (μm) Arm ratio (L/S) Chr. type FISH signal no. (n)
Short arm (S) Long arm (L) Total (S+L) 5S 45S
1 1.52 ± 0.11 2.68 ± 0.13 4.20 ± 0.16 1.77 ± 0.17y sm 1 -
2 1.32 ± 0.06 2.28 ± 0.12 3.61 ± 0.12 1.73 ± 0.11 sm - -
3 1.52 ± 0.15 2.00 ± 0.17 3.52 ± 0.21 1.33 ± 0.18 m 2 -
4 1.43 ± 0.15 1.68 ± 0.11 3.11 ± 0.21 1.19 ± 0.12 m - -
5 1.22 ± 0.10 1.55 ± 0.08 2.77 ± 0.11 1.29 ± 0.15 m 1 -
6* 0.81 ± 0.11 1.68 ± 0.17 2.49 ± 0.19 2.12 ± 0.39 sm 4 4
7 1.18 ± 0.08 1.27 ± 0.15 2.45 ± 0.16 1.08 ± 0.15 m - -
8 1.10 ± 0.11 1.31 ± 0.10 2.41 ± 0.12 1.22 ± 0.18 m - -
9 1.12 ± 0.07 1.25 ± 0.08 2.37 ± 0.08 1.13 ± 0.13 m - -
Total: 24m + 12sm 8 4

sm, submetacentric; m, metacentric; *, satellite chromosome; y, mean ± standard deviation.

Plant Breed. Biotech. 2020;8:389-95 https://doi.org/10.9787/PBB.2020.8.4.389
© 2020 Plant Breed. Biotech.