Table 1.

Differences in stomatal length (mean ± standard deviation, SD) among ploidy levels in Tripleurospermum, as determined by Duncan’s multiple-range test from one-way analysis of variance (ANOVA); values with different letters are significant at P < 0.01

Taxon	Chromosome number (2n)	Ploidy level	Stomatal length (μm)
T. baytopianum	18	2x	25.24 ± 1.89
T. conoclinium	18	2x	28.56 ± 0.94
T. corymbosum	27	3x	30.64 ± 1.44
T. disciforme	18	2x	27.60 ± 1.14
T. elongatum	18	2x	24.87 ± 1.57
T. fissurale	18	2x	27.08 ± 1.34
T. heterolepis	36	4x	35.92 ± 0.97
T. hygrophilum	18	2x	26.48 ± 1.33
T. inodorum	36	4x	32.72 ± 1.22
T. kotschyi	36	4x	36.58 ± 1.81
T. microcephalum	18	2x	25.28 ± 1.04
T. parviflorum	18	2x	29.69 ± 0.25
T. pichleri	36	4x	33.08 ± 0.46
T. repens	36	4x	37.66 ± 0.47
T. rosellum var. album	18	2x	28.32 ± 1.01
T. sevanense	36	4x	34.46 ± 1.51
T. tempskyanum	36	4x	35.72 ± 1.17
T. tenuifolium	36	4x	33.88 ± 1.67
T. transcaucasicum	18	2x	28.92 ± 1.39
T. ziganaense	18	2x	28.25 ± 1.04
Source of variation			Ploidy mean length (μm; among taxa)
Diploid taxa (2x)			27.31 ± 1.99a
Triploid taxon (3x)			30.64 ± 1.44b
Tetraploid taxa (4x)			35.00 ± 2.02c