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Table 1 The chromosomes of the diploid E. Purpurea based on eight cellsa

From: A C-banded karyotype of mitotic chromosomes in diploid purple coneflower (Echinacea purpurea L.)

Code of chromosome Length (μm) of long arm Length (μm) of short arm Total length (μm) Arm ratiob Type of chromosomec
I 6.54 ± 0.14 4.71 ± 0.18 11.25 ± 0.32 1.40 ± 0.02 m
II 5.67 ± 0.53 3.80 ± 0.21 9.46 ± 0.73 1.50 ± 0.05 m
III 5.25 ± 0.22 4.22 ± 0.13 9.46 ± 0.35 1.25 ± 0.02 m
IV 4.98 ± 0.47 3.76 ± 0.35 8.74 ± 0.81 1.34 ± 0.01 m
V 6.01 ± 0.13 2.56 ± 0.05 8.59 ± 0.15 2.40 ± 0.02 sm
VI 6.52 ± 0.91 1.73 ± 0.18 8.25 ± 1.09 3.78 ± 0.11 st
VII 5.61 ± 0.18 2.16 ± 0.15 7.76 ± 0.32 2.62 ± 0.08 sm
VIII 5.99 ± 0.14 1.75 ± 0.03 7.74 ± 0.11 3.47 ± 0.15 st
IX 6.03 ± 0.70 1.49 ± 0.16 7.55 ± 0.89 4.17 ± 0.08 st
X 5.79 ± 0.70 1.52 ± 0.21 7.30 ± 0.90 3.93 ± 0.01 st
XI 5.73 ± 0.20 1.48 ± 0.04 7.20 ± 0.23 3.99 ± 0.03 st
  1. aData were mean ± standard deviation
  2. bArmratio: Length of the long arm/length of the short arm
  3. cm: Arm ratio lower than 1.70; sm: arm ratio higher than 1.70 but lower than 3.0; st: arm ratio higher than 3.00 [29]