New or rare chromosome counts in the genera Artemisia L. and Mausolea Bunge (Asteraceae, Anthemideae) from Uzbekistan

Abstract

Seventeen chromosome counts of 14 Artemisia and one Mausolea species are reported from Uzbekistan. Five of them are new reports, two are not consistent with previous counts and the remaining are confirmations of very scarce (one to four) previous data. Two basic chromosome numbers (x=8 and x=9) and two ploidy levels (2x and 4x) were found. Some correlations between ploidy level, morphological characters and distribution are noted.

Polyploidy variation in some species of the genusArtemisiaL. (Asteraceae) in Iran

“…8). Several counts have been carried out on different wild population of this species; which showed their chromosome number as 2n = 2x = 16 (HINDAKOVA and MAJOVSKY 1976;KAUL and BAKSHSI 1984;KUZ-MANOV et al 1986;VALKOVA and BOYKO 1986;MENDELAK and SCHWEIZER 1986;KRASNIKOV and LOMONOSOVA 1990;WANG 2000;RABIE et al 2003;VALLLÈS et al 2003;RO-TREKLOVA et al 2004;SAEDI et al 2006), n = x = 8 (KHATOON andALI 1993;VALLÈS et al 2008). But only in two populations two different chromosome number were counted as 2n = 2x = 16 and 18 (Table 1, Figs.…”

New or rare data on chromosome numbers and karyomorphology of some taxa in the subgenusSeriphidium(Bess.) Rouy. (Artemisia, Asteraceae) in Turkey

“…Karyotype asymmetry was estimated using the mean centromeric index, the ratio of the shortest-to-longest pairs, and the intrachromosomal asymmetry (A1) and interchromosomal asymmetry (A2) indices (Romero 1986). To assess the existence of previously published chromosome counts in the taxa studied, we used the most common indexes of plant chromosome numbers Vallès, Torrell, Garcia-Jacas and Kapustina 2001 and references therein), previous publications (Vallès et al 2005 and references therein), as well as online chromosome number databases, the chromosome number databases 'Index to Plant Chromosome Numbers' (Missouri Botanical Garden, http://mobot.mobot.org/W3T/Search/ipcn.html) and 'Index to Chromosome Numbers in the Asteraceae' (Watanabe 2014).…”

“…Over the last five or six decades, many karyological and cytological studies have been performed in the genus Artemisia (Kawatani and Ohno 1964;Torrell et al 1999;Vallès and McArthur 2001;Vallès, Torrell and GarciaJacas 2001;Vallès, Torrell, Garcia-Jacas and Kapustina 2001;Kreitschitz and Vallès 2003;Rabiei et al 2003;Hoshi et al 2006;Pellicer, Garcia, Garnatje, Hidalgo, et al 2007;Naseri et al 2009;Chehregani and Hajisadeghian 2009;Chehregani et al 2010;Pellicer et al 2010;Tabur et al 2011Tabur et al , 2012Dolatyari et al 2013;Jalili et al 2013). Chromosome number is the most basic of all karyological and cytogenetic data, but is still a source of relevant information in plant systematics and evolution (Stebbins 1971;Stace 2000;Stuessy 2009;Garbari et al 2012).…”

Variation of chromosome numbers in 14 populations of Tanacetum parthenium and eight populations of T. polycephalum in Hamedan Province, Iran

“…Therefore it seems that there are two different ploidy levels, tetraploid and hexaploid, in populations of this species. In Anthemideae, polyploidy is very common, particularly in genera such as Chrysanthemum (Zhao et al2009), Ajania (Garcia et al 2006 and Artemisia (Valles et al 2008;Chehregani et al 2010).…”