New or rare chromosome counts in the genus Artemisia L. (Asteraceae, Anthemideae) from Armenia and Iran

Twenty‐two chromosome counts of 19 taxa (21 populations) in the tribe Anthemideae and one member (one population) of the tribe Inuleae of the family Asteraceae are reported. The Anthemideae studied belong to the subtribes Artemisiinae (14 Artemisia taxa, and one species each of the genera Dendranthema, Filifolium and Neopallasia) and Tanacetinae (one species each of the genera Lepidolopha and Tanacetopsis). From the Inuleae, we studied one Inula species. Five counts are new reports (including two at generic level), six are not consistent with previous counts and the remainder are confirmations of very limited (one to four records) previous data. Most of populations of Anthemideae studied have the basic chromosome number x = 9, with ploidy levels ranging from 2x to 10x. Dysploidy is also present, with two x = 8 diploid taxa. The species of Inuleae studied is a diploid with x = 10, also indicating dysploidy, other members of the same genus Inula having basic numbers of x = 9 or 8. © 2005 The Linnean Society of London, Botanical Journal of the Linnean Society, 2005, 148, 77–85.

Section: Discussionmentioning

confidence: 98%

“…The Inuleae, of which we have studied only one representative, is smaller, with approximately 500 species. Within the Anthemideae, we concentrate on a group of genera related closely to Artemisia (Torrell et al ., 2001; Vallès, Torrell & Garcia‐Jacas, 2001a; Vallès et al. , 2001b, 2003).…”

Section: Introductionmentioning

confidence: 99%

Chromosome numbers in the tribes Anthemideae and Inuleae (Asteraceae)

Vallès¹,

Garnatje²,

Garcia³

et al. 2005

“…Sheidai, Nasirzadeh & Kheradnam (2000) proposed that changes in chromosome number in Iranian Echinops have occurred via centric fusion or fission. Descending dysploidy has also been reported to be an active evolutionary mechanism in other genera of the Asteraceae (Fernández Casas & Susanna, 1986; Garcia‐Jacas, Susanna & Ilarslan, 1996; Siljak‐Yakovlev, 1996; Vallès & Siljak‐Yakovlev, 1997; Torrell et al ., 2001).…”

Section: Discussionmentioning

confidence: 98%

Contribution to the karyological knowledge of Echinops (Asteraceae, Cardueae) and related genera

Garnatje

Vilatersana

Susanna

et al. 2004

Twenty‐six chromosome counts were made of several genera of the tribe Cardueae from various European and Asian provenances: Acantholepis (one species studied), Amphoricarpus (1), Chardinia (1), Echinops (14 species, 15 populations), Siebera (1), Staehelina (3) and Xeranthemum (4). Eleven of the reports are made for the first time, ten confirm previous counts, while the remainder report disparities with earlier records. The existence of different basic chromosome numbers and ploidy levels suggests dysploidy and polyploidy as the main mechanisms of chromosomal evolution in the taxa considered. © 2004 The Linnean Society of London, Botanical Journal of the Linnean Society, 2004, 145, 337−344.

“…These include monographs on large groups (Ward, 1953;Ehrendorfer, 1964;Korobkov, 1972;Persson, 1974;McArthur & Sanderson, 1999) and papers concerning fewer taxa or reporting chromosome counts in several species of the genus (Khoshoo & Sobti, 1958;Arano, 1963;Kawatani & Ohno, 1964;Koul, 1964Koul, ,1965Estes, 1969;Rousi, 1969;Martinoli & Ogliotti, 1970;Filatova, 1971Filatova, , 1974aMcArthur et al, 1981;Ouyahya & Viano, 1981, 1988Mendelak & Schweizer, 1986;Valles, 1987a,b;Valles & Seoane, 1987;Stahevitch & Wojtas, 1988;Tavassoli & Derakhshandeh-Peikar, 1993;Oliva & Valles, 1994;Valles & Torrell, 1995;Valles & Siljak-Yakovlev, 1997;Torrell et al, 1999aTorrell et al, , 2001. In addition, many other isolated reports of chromosome numbers in this large and widespread genus have been published.…”

Section: Introductionmentioning

confidence: 99%

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Vallès

Torrell

Garcia‐Jacas

2001

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and nLraniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x=9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.