Investigation of chromosome variation in four Aegilops L. (Poaceae) species and populations in Iran

Year 2015, Volume: 74 Issue: 2, 9 - 16, 19.03.2017

Sara Sadeghian

Abstract

The genus Aegilops is one of the most important genera of the Poaceae family. It belongs to the tribe
Triticeae with 12 species in Iran. The research karyological analyzed in 12 populations of 4 Aegilops
species: A. umbellulata Zhuk., A. tauschii Coss., A. columnaris Zhuk. and, A. triuncialis L. were done.
We used fresh grown root tips. Then α-bromonaphtaline, formaldehyde and chromium trioxide (1:1), 1
N NaOH and hematoxiline were used for pre- treatment, fixative, hydrolyser and chromosome staining
agent, respectively. We used video Analysis system for each species with Micromeasure software. All
populations in the secondary basic numbers were x=7. The ploidy levels were different. In A. tauschii
and A. umbellulata were found 2n=14, and A. columnaris and A. triuncialis were found 2n=28. Detailed
karyotype analysis allows us to group the different species and to postulate relationships among them. 

Keywords

Aegilops, Chromosome, Karyology, Poaceae, Populations

References

• Ahmadabadi M.T., Ahmadian Tehrani P., Omidi M and Davoodi D. (2005). Cytogenetic studies of wild wheat relatives (Aegilops) of the North West of Iran. Iranian Journal of Agriculture Science, 36(4): 969-77.
• Sadeghian et al. / IUFS Journal of Biology 2015, 74(2): 9-16
• 15
• Al-Mashhadani A. N., Al-Shehbaz I. A. and Soliman A. S. (1980) Karyotype analysis for ve tetraploid Aegilops species native to Iraq. Caryologia, 33(4): 495-502.
• Badaeva E. D., Badaev N.S., Gill B.S. and Filatenko A.A. (1994) Intraspeci c karyotype divergence in Triticum araraticum (poaceae). Pl. Syst. Evl., 192: 117-45.
• Boissier, P. E. (1844). Flora orientalis: Vol. 5. Basel, Geneva, Switzerland.
• Bor N.L. (1968). Gramineae. In: Townsend, C. C., Guest, E. & Al-Rawi, A. (eds.), Flora of Iraq: Vol. 9. Iraq ministry of agriculture. Baghdad, Iraq.
• Chennaveeraiah M.S. (1960) Karyomorphologic and cytotaxonomic studies in Aegilops. Acta Hort. Goteburg, Sweeden, 23: pp. 85-178.