Plant Breeding and Biotechnology

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Table. 1.

Table. 1.

FISH karyotype analysis of the diploid Platycodon grandiflorus (Jacq.) A. DC. ‘Jangbaek’ showing chromosomal lengths, types and number of 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 1.74 ± 0.11 2.25 ± 0.10 3.99 ± 0.197 1.30 ± 0.06y m - -
2 1.50 ± 0.09 1.99 ± 0.10 3.50 ± 0.17 1.33 ± 0.07 m - -
3 1.54 ± 0.07 1.93 ± 0.12 3.46 ± 0.15 1.25 ± 0.08 m 2 -
4 1.39 ± 0.09 1.76 ± 0.07 3.15 ± 0.07 1.27 ± 0.12 m - -
5 1.28 ± 0.16 1.72 ± 0.15 2.99 ± 0.10 1.37 ± 0.28 m - -
6* 1.06 ± 0.06 1.84 ± 0.03 2.90 ± 0.07 1.75 ± 0.09 sm 2 2
7 1.20 ± 0.08 1.44 ± 0.12 2.64 ± 0.17 1.20 ± 0.09 m - -
8 1.09 ± 0.05 1.37 ± 0.02 2.46 ± 0.05 1.25 ± 0.08 m - -
9 1.15 ± 0.08 1.19 ± 0.08 2.34 ± 0.13 1.04 ± 0.09 m - -
Total: 16m + 2sm 4 2

m, metacentric; sm, submetacentric; *, 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.