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Cereal Research Communications

, Volume 44, Issue 3, pp 453–460 | Cite as

Chromosome Variation and HMW Glutenins in Synthetic Hexaploid Wheats (Triticum turgidum ssp. dicoccum/Aegilops tauschii)

  • N. Daskalova
  • S. Doneva
  • P. SpetsovEmail author
Quality and Utilization

Abstract

Seven synthetic hexaploid wheats (Triticum dicoccum/Aegilops tauschii) were subjected for investigation. Numerical variation of chromosome number in F1 hybrids between three synthetics and common wheat varieties, was recorded. Hexaploid amphiploids (SHW) formed gametes with aneuploid chromosome number at a frequency of 13.2 and 14.8% as male and female parents, respectively. We speculated that the frequency of aneuploids in the generation might depend on variability of BAu- and D-genomes of synthetic parents, and could be used for increasing the genetic diversity in common wheat. The HMW-glutenins analysis divided two lines in SHW530 and 532 due to different genes present in the B-genome, and increased them to 9 synthetic lines. The subunits 1Dx1.5 + 1Dy10 was predominantly observed in the synthetics. Two other allelic variants 1Dx2 + 1Dy11 and 1Dx4 + 1Dy10.1 were found in four lines and appeared as new genes in SHW originated from Aegilops tauschii. The synthetic hexaploid lines could play a significant role as novel germplasm resources for improving the grain quality of bread wheat.

Keywords

Aegilops tauschii tetraploid wheat mitotic chromosomes glutenins synthetic amphiploids 

Abbreviations

SHW

synthetic hexaploid wheat

HMW-GS

high-molecular-weight glutenin subunits

IPGR

Institute for Plant and Genetic Resources - Sadovo, Bulgaria

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Notes

Acknowledgement

We thank Dr. J. Valkoun for providing the samples of emmer wheats from ICARDA-Syria and the IPGR, supporting the Aegilops tauschii accessions.

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© Akadémiai Kiadó, Budapest 2016

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.Plant Production DepartmentTechnical UniversityVarnaBulgaria
  2. 2.Dobroudja Agricultural InstituteGeneral ToshevoBulgaria
  3. 3.College of Konstantin Preslavsky University of ShumenDobrichBulgaria

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