A Cytotaxonomic Study On Dianthus L. Species In North Eastern Iran

Jafari, Ali; Behroozian, Maryam

doi:10.3923/ajps.2010.58.62

Cited by 9 publications

(3 citation statements)

References 13 publications

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“…Karyotype studies have been successfully conducted in Dianthus spp. (Jafari and Behroozian 2010); genus Iris (Xiao Fang et al 2009) and Daucus spp. (Lovene et al 2008, Xiao Fang et al 2009).…”

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Karyotype Analysis and Ploidy Determination Using Flow Cytometry in African Bitter Milk Plant “Utazi”, <i>Gongronema latifolium</i> Benth

2012

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Summary Availability of basic genetic information on a plant species is the first pre-requisite in designing any genetic improvement programme for the species. This study was therefore carried out to determine the karyotype of Gongronema latifolium to obtain basic knowledge on ploidy level and karyotype as a first step in understanding the genetics of this spice plant. Karyotype and flow cytometry (FCM) studies were carried out on 4 accessions of G. latifolium collected from the humid forest vegetation in Abia, Akwa Ibom, Cross River and Imo States of Nigeria. Chromosome number of Abia accessions were 2n=20 and 22 with karyotype formulae, 3m+4sm+2a+1t and 2m+4sm+ 2a+3t, respectively; Akwa Ibom accessions, 2n=18 with formula: 3m+5sm+1a; Cross River accessions, 2n=18 and 22 with formulae: 2m+4sm+2a+1t and 3m+4sm+3a+1t, respectively; Imo accessions, 2x=22 and 24 with formulae: 1m+5sm+3a+2t and 2m+7sm+2a+1t, respectively. Results obtained revealed cytotype variation and the occurrence of 4 cytotypes, 2n=18, 20, 22 and 24. We therefore conclude that G. latifolium is a diploid species with variable basic numbers. Four basic numbers, n=9, 10, 11 and 12, were therefore proposed for G. latifolium. FCM showed the presence of 2C and 4C DNA content and provided evidence for endoreduplication, a likely evolutionary survival mechanism in this climbing vegetable plant species. This is the first report of karyotype analysis in Gongronema latifolium, an important indigenous African vegetable spice plant with huge medicinal value.

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Karyotype Analysis and Ploidy Determination Using Flow Cytometry in African Bitter Milk Plant “Utazi”, <i>Gongronema latifolium</i> Benth

2012

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“…Karyological data of D. crinitus subsp. turcomanicus, which is published in previous study (JAFFARI & BEHROOZIAN 2010), are included in the current study to reveal its karyological relationship with the unknown taxon. One individual of this unknown taxon, however, is sampled to investigate its karyological characteristics.…”

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confidence: 99%

A karyological study of some Dianthus L. species (Caryophyllaceae) in Northeast of Iran

2012

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This study focuses on karyological investigation of four taxa of Dianthus (Caryophyllaceae) including D. crossopetalus, D. orientalis subsp. stenocalyx, D. orientalis subsp. gorganicus, and Dianthus sp. distributed in Northeast of Iran. The karyotype asymmetry/symmetry was evaluated using two methods: 1) CVCL (coefficient of variation of chromosome length) and CVCI (heterogeneity of the centromeric index); and 2) MCA (mean centromeric asymmetry). The karyotype asymmetry was also used to investigate the relationships among the taxa. Results obtained from the current study revealed that there are two different ploidy levels (2n = 2x = 30 and 2n = 4x = 60) among the investigated taxa. The indices CVCL and MCA described karyotype asymmetry correctly based on variation in chromosome length. Diagram of CVCL vs. MCA seems to be appropriate for karyological delimitation and taxonomic relationships among the Dianthus taxa under study. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…Polyploidy in Dianthus is associated with genetic, phenotypic, physiological, and ecological diversification (Balao et al, 2010(Balao et al, , 2011López-Jurado et al, 2019;Domínguez-Delgado et al, 2021). On the other hand, some morphologically similar taxa can have different chromosome numbers (Jafari & Behroozian, 2010).…”

Section: Introductionmentioning

confidence: 99%

A cytosystematic study of the Dianthus virgineus complex (Caryophyllaceae) in the Central Mediterranean

Franzoni,

Astuti,

Bacchetta

et al. 2023

J of Sytematics Evolution

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European wild carnations (Dianthus) are represented by a high number of taxa organized in unresolved taxonomies. In particular, taxa belonging to the Dianthus virgineus L. complex in the Central Mediterranean have been delimited mainly with qualitative morphological data and still await quantitative investigations, which are vital to understand boundaries and relations among plant diversity groups. Here, we examine the phenotypic features of nuclear genome organization testing for species boundaries in this complex. We have studied the chromosome number, the total haploid length (THL), and the relative genome size (RGS) in 122 populations belonging to 25 out of 33 taxa of the complex. All the studied populations have 2n = 2x = 30 chromosomes, and the THL ranges from 14.09 to 20.71 μm. Genome size estimations support the absence of polyploidization events, but show a certain degree of variation (0.318–0.423 arbitrary units). The RGS variation is not in agreement with current taxonomic treatment, but rather shows a geographical pattern, with higher values in Sicily and Sardinia. No correlation between the THL and the RGS was detected, possibly due to the stable chromosome number and the small size of chromosomes. A number of evolutionary unique groups lower than the number of currently accepted taxa may be hypothesized.

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A Cytotaxonomic Study On Dianthus L. Species In North Eastern Iran

Cited by 9 publications

References 13 publications

Karyotype Analysis and Ploidy Determination Using Flow Cytometry in African Bitter Milk Plant “Utazi”, <i>Gongronema latifolium</i> Benth

Karyotype Analysis and Ploidy Determination Using Flow Cytometry in African Bitter Milk Plant “Utazi”, <i>Gongronema latifolium</i> Benth

A karyological study of some Dianthus L. species (Caryophyllaceae) in Northeast of Iran

A cytosystematic study of the Dianthus virgineus complex (Caryophyllaceae) in the Central Mediterranean

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