Multidisciplinary studies on<i>Achillea</i>sensu lato<i>(Compositae-Anthemideae):</i>new data on systematics and phylogeography

Ehrendorfer, Friedrich; Guo, Yanping

doi:10.3372/wi.36.36105

Cited by 60 publications

(33 citation statements)

References 26 publications

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“…Section Achillea of the genus Achillea s a complex with a few classifi cations studied by several researchers (Valant-Vetchera and Kastner 1998;Ehrendorfer and Gou 2006;Kiran et al 2008;Abd El-Twab and Kondo 2009). In Japan, four species of Achillea were distributed and they were belonged to a sect.…”

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A cytogenetic study in three species of Achillea

et al. 2010

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ABSTRACT.To make research cytogenetic properties of commonly distributed species in East Eurasian Flora related to Flora of Japan, the chromosome numbers and karyotypes in two species and one subspecies of Achillea in Japan and Russia were investigated by orcein and fl uorescent sequential staining of GC-specifi c chromomycin A 3 (CMA) and AT-specifi c 4', 6-diamidino-2-phenylindole (DAPI) banding methods. Achillea alpina subsp. subcartilaginea, A. asiatica and A. millefolium showed the tetraploidal and hexaploidal chromosome numbers of 2n=36, 56 and 36, respectively. Unexpected odd satellite chromosome (sat-chromosome) numbers were shown in the tetraploid species of A. alpina subsp. subcartilaginea and A. millefolium. In contrast, six sat-chromosomes were observed in the hexaploid A. asiatica. Additionally, median-centromeric chromosome did not have any satellite. All sat-chromosomes of the both tetraploid species were submedian-centromeric chromosomes, while all sat-chromosomes of the hexaploid species were subterminal-centromeric chromosomes. The satellites were well characterized as CMA-positive and DAPI negative sites.

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“…In Japan, four species of Achillea were distributed and they were belonged to a sect. Achillea (Ehrendorfer and Gou 2006).…”

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A cytogenetic study in three species of Achillea

et al. 2010

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“…Polyploid taxa have originated in many clades independently and include 4x, 6x and 8x species (Sheidai et al 2009). The genus exhibits great ecological amplitude, ranging from deserts to water-logged habitats and from sea coasts to the high mountains (Ehrendorfer & Guo 2006;Rahimmalek et al 2009). Several widespread Achillea species show extremely high morphological variability (e.g.…”

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confidence: 99%

Karyotype analysis and new chromosome number reports in Achillea species

et al. 2012

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Cytological analyses were performed in nineteen accessions belonging to seven Achillea species. The results indicate that two species, A. filipendulina and A. tenuifolia, are diploid (2n = 2x = 18) and three species, A. bieberstinii, A. pachycephala, and A. aucheri are tetraploid (2n = 4x = 36). For two latter species, the chromosome numbers are new. Two ploidy levels of 2n = 6x = 54 and 2n = 8x = 72 in A. millefolium and two ploidy levels of 2n = 2x = 18 and 2n = 4x = 36 in A. santolina species were found. Cluster analysis based on chromosomal characteristics and karyotype asymmetry indices clustered the studied genotypes into three major groups. The first group included the diploid species (A. filipendulina, A. santolina and A. tenufolia), while the second group comprised tetraploid species (A. santolina, A. aucheri and A. pachycephala). A. millefolium (hexaploid, octaploid) and A. bieberstinii (tetraploid) were classified in the third group. Total form percentage (TF%) in groups 1, 2 and 3 were 42.03, 42.15 and 41.08, respectively. Group 1 possessed the highest average of symmetry index (S% = 70.8). Stebbins classification method grouped all accessions in class A. Moreover, group 1 (diploid level species), had the most symmetric karyotype from point of view of centromere and chromosome length. Therefore, it can be concluded that the genotypes belonging to group 1 are the earliest evolutionary form.

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“…The genus Achillea L. comprises 110 -140 species and has a rather wide geographic distribution spanning Europe, Asia and N Africa (Ehrendorfer & Guo 2006;Oberprieler & al. 2007).…”

Section: Introductionmentioning

confidence: 99%