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Table 1 Morphology of P. virgatum chromosomes (ALB280)

From: Karyotype variation is indicative of subgenomic and ecotypic differentiation in switchgrass

Chromosome Lengtha(μm ± SE) Arm Ratiob(r ± SE) Centricity Class
1 4.10 ± 0.25 1.30 ± 0.09 m
2 3.73 ± 0.30 1.31 ± 0.06 m
3 3.38 ± 0.18 1.15 ± 0.07 m
4 3.26 ± 0.16 1.28 ± 0.13 m
5 3.05 ± 0.18 1.22 ± 0.16 m
6 2.82 ± 0.16 1.21 ± 0.06 m
7 2.61 ± 0.17 1.30 ± 0.08 m
8 2.35 ± 0.11 1.18 ± 0.06 m
9 2.05 ± 0.16 1.21 ± 0.04 m
  1. aAverage value of 10 chromosome pairs (μm).
  2. bArm ratio r (long/short) according to Levan et al. [42].
  3. SE = standard error; m = metacentric.