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. 2010 Mar 1;285(3-4):149-157.
doi: 10.1007/s00606-009-0266-5.

Chromosome numbers in Tripleurospermum Sch. Bip. (Asteraceae) and closely related genera: relationships between ploidy level and stomatal length

Huseyin Inceer  1 , Sema Hayirlioglu-Ayaz
Affiliations

Chromosome numbers in Tripleurospermum Sch. Bip. (Asteraceae) and closely related genera: relationships between ploidy level and stomatal length

Huseyin Inceer et al. Plant Syst Evol. .

Abstract

This study includes 24 reports of chromosome counts in Tripleurospermum Sch. Bip. (20 taxa), Anthemis L. (1 species) and Matricaria L. (3 taxa) belonging to the tribe Anthemideae of the family Asteraceae from Turkey. Chromosome numbers of these taxa are 2n = 2x = 18, 3x = 27 and 4x = 36. Nine counts are new reports, one is not consistent with previous report, and the remainder confirm earlier information. Statistically significant differences depending on ploidy level, stomatal length or environmental factors such as altitude were determined in Tripleurospermum. Several systematic and evolutionary aspects of the genera are discussed in the light of chromosomal data.

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Figures

Figs. 1–7
Figs. 1–7
Somatic metaphases in Tripleurospermum. 1 T. baytopianum (2n = 18). 2 T. conoclinium (2n = 18). 3 T. corymbosum (2n = 27). 4 T. disciforme (2n = 18). 5 T. elongatum (2n = 18). 6 T. fissurale (2n = 18). 7 T. heterolepis (2n = 36). Scale bars 10 μm
Figs. 8–14
Figs. 8–14
Somatic metaphases in Tripleurospermum. 8 T. hygrophilum (2n = 18). 9 T. inodorum (2n = 36). 10 T. kotschyi (2n = 36). 11 T. microcephalum (2n = 18). 12 T. parviflorum (2n = 18). 13 T. pichleri (2n = 36). 14 T. repens (2n = 36). Scale bars 10 μm
Figs. 15–20
Figs. 15–20
Somatic metaphases in Tripleurospermum. 15 T. rosellum var. album (2n = 18). 16 T. sevanense (2n = 36). 17 T. tempskyanum (2n = 36). 18 T. tenuifolium (2n = 36). 19 T. transcaucasicum (2n = 18). 20 T. ziganaense (2n = 18). Scale bars 10 μm
Figs. 21–24
Figs. 21–24
Somatic metaphases in Anthemis and Matricaria. 21 Anthemis macrotis (2n = 18). 22 Matricaria aurea (2n = 18). 23 M. chamomilla var. recutita (2n = 18). 24 M. matricarioides (2n = 18). Scale bars 10 μm
Fig. 25
Fig. 25
Drawings of paradermal sections in Tripleurospermum. a T. baytopianum; b T. conoclinium; c T. corymbosum; d T. disciforme; e T. elongatum; f T. fissurale; g T. heterolepis; h T. hygrophilum; i T. inodorum; j T. kotschyi; k T. microcephalum; l T. parviflorum; m T. pichleri; n T. repens; o T. rosellum var. album; p T. sevanense; r T. tempskyanum; s T. tenuifolium; t T. transcaucasicum; u T. ziganaense. Scale bar 50 μm
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References

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