Volume 1, Issue 2 (4-2011)                   NCMBJ 2011, 1(2): 49-54 | Back to browse issues page

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Ferdousi University of Mashhad, Biology Department , Bakhshi@pnu.ac.ir
Abstract:   (22996 Views)

Aim and Background. The genus Cirsium is one of the genera in Compositae w hich includes 250-300 species distributed all over the world. They are herbaceous, perennial or rarely annual and usually distributed in Africa, Europe and America.

Materials and Methods. In cytogenetical studies, 4 different species were studied. The methods that were used in the chromosomal studies are as are as follows: pretreatment, fixation, hydrolyzation, staining and mounting. Also chromosome number and ploidy level were recorded.

Results. The somatic chromosome number in C. congestum and C. turkestanicum was 2n=34 and was 2n=68 in C. vulgare and C. respectively.

Conclusion. Based on this study C. congestum and C. turkestanicum are diploid and somatic chromosome number in both species is 2n=2x=34 and C. vulgare and C. arvense are tetraploid and somatic chromosome number is 2n=4x=68 Respectively.

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Type of Study: Research Article | Subject: Genetics
Received: 2011/05/5 | Accepted: 2014/04/23 | Published: 2014/04/23

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