Chromosome numbers in Compositae. XVIII.

Carr, Gerald D.; King, Robert M.; Powell, A. Michael; Robinson, Harold

doi:10.2307/2656618

Cited by 66 publications

(56 citation statements)

References 19 publications

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“…The present count of the 2n= 18 ( Fig. 1 and 2 D) is convenient with previously reported count of G. coronaria (Bhattacharyya 1977;Pavone et al 1981;Razaq et al 1988;Nirmala and Rao 1986;Vogt and Oberprieler 1993;Ruíz de Clavijo 1993;Oberprieler and Vogt 1993;Kaul and Kaur 1995;Strother and Watson 1997;Carr et al 1999;, and of G. coronaria var. discolor .…”

Section: Resultssupporting

confidence: 69%

Karyomorphological studies of some species of Chrysanthemum sensu lato in Egypt

El-Twab¹,

Mekawy²,

El‐Katatny³

2008

Chromosome Botany

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ABSTRACT. Chromosome numbers and karyotypes are presented in eight taxa in Chrysanhemum senu lato (Asteraceae).Achillea santolina, Cotula barbata and Co. cinerea had new counts for the first time. The chromosome complement of Artemisia arborescens (2n=18) consists of 14 median and four sub-median chromosomes. Achillea fragrantissima (2n=18) consists of 14 median and four sub-median chromosomes; Ach. santolina (2n=36) consists of 26 median-and ten submedian-centromeric chromosomes. Glebionis coronaria (2n=18) consists of 18 median-centromeric chromosomes; while G. coronaria var. discolor (2n= 18) has 16 median-and two submedian-centromeric chromosomes. Cotula barbata (2n=16) consists of 12 median-and four sub-median-centromeric chromosomes, while Co. cinerea (2n=18) has 14 median-and four sub-median-centromeric chromosomes. The chromosome complement of Matricaria recutita (2n=18) consists of 14 median-, two submedian-and two subterminal-centromeric chromosomes.The longest chromosome complement was Artemisia arborescens while the shortest was Cotula barbata. The length of the tetraploid chromosome complement of Ach. santolina was approximately one third shoter than the diploid Artemisia arborescens, and equal to G. coronaria.

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Section: Resultssupporting

confidence: 69%

Karyomorphological studies of some species of Chrysanthemum sensu lato in Egypt

El-Twab¹,

Mekawy²,

El‐Katatny³

2008

Chromosome Botany

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“…Philips (1982) recognized two sections for the N American species. In spite of the accumulating molecular data, chromosome information continues to be important in assessing phylogenetic relationships (Carr et al 1999). Although the cytological data on Parnassia is not complete, it was concluded that the basic chromosome numbers for the genus are x=7, 8 and 9.…”

Section: Discussionmentioning

confidence: 99%

Cytological studies of 14 Chinese species ofParnassiaL. (Par-nassiaceae) and its phylogenetic implications

Ding

Hong

et al. 2005

Caryologia

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-The chromosome numbers and karyomorphology of 14 Chinese species of the genus Parnassia were investigated. The chromosome numbers of 11 species were reported for the first time. The report of 2n=48 for P. monochrofolia Franch was new to the Chinese species of the genus. There are about 30 species cytologically studied up to now. From the available data, the species of Parnassia with the basic chromosome numbers of x=7, 8 and 9 were found in China and the Himalayas, in which the more species with x=9, as well as mainly in western N America, while x=8 was only found in eastern N. America. Polyploidization was common in the genus, more extensively in Northern America. Based on our results and the previously reported data, the basic chromosome numbers and polyploidization are discussed. Combined with gross morphology and geographical distribution of Parnassia, the phylogenetic implications of the cytological data are also discussed. It is suggested that eastern Asia and western N America are probably the modern divergent centers of the genus.

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“…16 '' and ''ca. 34'' (Robinson et al, 1981), and ''2n ϭ 32 II'' (Carr et al, 1999). Stenocarpha filiformis (Hemsl.)…”

Section: Methodsmentioning

confidence: 99%

Chromosome studies: Mexican Compositae

Strother

Panero

2001

American J of Botany

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Chromosome observations reported here from 70 collections representing 65 species from 40 genera of Compositae (mostly Heliantheae) provide taxonomically useful information. First counts for 28 species, including the first count for Psacaliopsis, may prove to be especially interesting in relation to phyletic and taxonomic alignments of the taxa. Of special interest among first reports is 2n ϭ 5 II for Stevia lita; other stevias have x ϭ 11, 12, or 17. Thirteen of our counts differ from prior reports and may also be of particular interest in phyletic and taxonomic contexts.

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Chromosome numbers in Compositae. XVIII.

Cited by 66 publications

References 19 publications

Karyomorphological studies of some species of Chrysanthemum sensu lato in Egypt

Karyomorphological studies of some species of Chrysanthemum sensu lato in Egypt

Cytological studies of 14 Chinese species ofParnassiaL. (Par-nassiaceae) and its phylogenetic implications

Chromosome studies: Mexican Compositae

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