Chromosome numbers of North African phanerogams. VIII. More counts in<i>Compositae</i>

“…The lower chromosome number of 2n ¼ 14 was reported by Palmgren (1943) from Denmark, by Gadella and Kliphuis (1963) from Holland and also by Delay (1948) for material of unknown origin. Higher chromosome numbers were reported by Hagerup (1944) for Denmark, with 2n ¼ 18; by Vogt and Oberprieler (1994) for Morocco with 2n ¼ 20; by Clavier (unpublished data of unknown provenance, noted by Darlington and Wylie, 1955) with 2n ¼ 22; and, finally, 2n ¼ 30 given by Dandy (1980) in Flora Europaea and by Franco and Afonso (1994) in their Flora of Portugal. Neither of these two Floras provides any source, however, for the higher counts.…”

mentioning

confidence: 95%

Biological Flora of Central Europe: Baldellia ranunculoides (Alismataceae)

Kozlowski

Jones²,

Nicholls-Vuille

2008

Perspectives in Plant Ecology, Evolution and Systematics

View full text Add to dashboard Cite

Baldellia ranunculoides (L.) Parl. (Alismataceae) is a taxonomically problematic aquatic plant with an historically illdefined distribution and global conservation status. This paper finds morphological, ecological and molecular evidence for two distinct taxa, probably best described as subspecies: (1) B. ranunculoides subsp. ranunculoides and (2) B. ranunculoides subsp. repens and provides detailed distribution data on their overlapping range, in different habitats, across the cool, high rainfall areas of western Europe and west Mediterranean. The two subspecies are amongst the relatively large number of threatened European and north Africa aquatic plants and this paper provides a systematic review of their relative conservation pressures and management needs, with particular emphasis on the status of both taxa in central Europe. Other observations indicate probable evolutionary relationships within B. ranunculoides s.l. and its associated taxa and the review points out where these and other research topics could potentially be pursued.

show abstract

“…The existence of diploid and tetraploid populations, separated from a geographical as well as an Sheidai, 2010;Sheidai et al, 2008), Cypress (Yldiz and Gucel, 2006, Greece (Constantinidis et al, 2009), Bulgaria (Pavlova and Tocheva, 2004), North America (Popp and Oxelman, 2007) or other regions (Bari, 1973;Nersesian and Goukasian, 1995;Vogt and Oberprieler, 2009) as well as for Romanian species (Baltisberger and Widmer, 2009;Ciocîrlan, 2000;Ironside and Filatov, 2005). The majority of the references in specialty literature show that diploid species (2n=2x=20 or 2n=2x=24) are more spread, then tetraploid forms (2n=4x=48), hexaploid (2n=6x=72) and that only some have a higher degree of polyploidy 2n=c.…”

Section: Resultsmentioning

confidence: 99%

Analysis of Chromosome Number in Some Allium and Silene Wild Species with Ornamental Use

Draghia

Chelariu

Sirbu

et al. 2013

Not Bot Hort Agrobot Cluj

View full text Add to dashboard Cite

The present study analyses the number of somatic chromosomes in plant species with ornamental value, in Romanian indigenous flora, Allium (A. flavum L., A. saxatile Bieb.) and Silene (S. compacta Fischer., S. supina M.Bieb.). The biological material was identified and harvested in the South-Eastern part of Dobrogea (Tulcea and Constanţa counties), area in the South-Eastern part of Romania, situated between the Danube and the Black Sea. Individuals from two populations of Allium flavum and Allium saxatile, respectively from Tulcea county (Turcoaia town) and Constanţa county (from Cheile Dobrogei) were analyzed. In the case of Silene compacta and Silene supina, plants of one population in Tulcea county, Turcoaia town, were used. The aim of the analysis was the quantification and comparison of the somatic chromosomes of plants from the same species but different populations, as is the case of the two Allium species, but also to relate them to results from specialty literature, reported by others. The chromosome number was determined in the roots of the small plants that were obtained from seeds collected in their natural habitat. Except the case of Silene supina species, where only diploid forms were identified (2n=24), when in specific literature tetraploid forms are mentioned (2n=48), found in other areas, all other analyzed taxa register similar data to that reported in other geographic regions. Respectively, 2n= 16 in the case of Allium flavum and Allium saxatile and 2n= 24 in the case of Silene compacta.

show abstract

Chromosome numbers of North African phanerogams. VIII. More counts inCompositae

Cited by 26 publications

References 12 publications

A rare case of a natural contact zone in Morocco between an autopolyploid and an allopolyploid of Centaurea aspera with sterile tetraploid hybrids

A rare case of a natural contact zone in Morocco between an autopolyploid and an allopolyploid of Centaurea aspera with sterile tetraploid hybrids

Biological Flora of Central Europe: Baldellia ranunculoides (Alismataceae)

Analysis of Chromosome Number in Some Allium and Silene Wild Species with Ornamental Use

Contact Info

Product

Resources

About