The Genetic Diversity of Iranian and Foreign Aegilops tauschii Accessions using SSR Markers

Niko, Nessa; Ahmadi, Jafar; Fabriki-ourang, Sedigheh; Mehrabi, Aliashraf

Volume 19, Issue 1 (5-2024) MGj 2024, 19(1): 49-60 | Back to browse issues page

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Niko N, Ahmadi J, Fabriki-ourang S, Mehrabi A. The Genetic Diversity of Iranian and Foreign Aegilops tauschii Accessions using SSR Markers. MGj 2024; 19 (1) : 5
URL: http://mg.genetics.ir/article-1-1845-en.html

The Genetic Diversity of Iranian and Foreign Aegilops tauschii Accessions using SSR Markers

Nessa Niko

, Jafar Ahmadi ^*

, Sedigheh Fabriki-ourang

, Aliashraf Mehrabi

Abstract: (407 Views)

Agilops is one of the most important genetic ancestors of wheat, which is a valuable genetic resource for wheat breeders due to its tolerance to various biotic and abiotic stresses. The main goal of this research was to evaluate the genetic diversity in 89 Aegilops tauschii accessions collected from different regions of Iran and the countries of Turkey, Afghanistan, Armenia, Sweden and Azerbaijan using 32 microsatellite primer pairs. The averages of polymorphic information content (PIC), Marker index (MI), Resolution (RP) indices were equal to 0.81, 1.82 and 1.88, respectively, which indicated that the primers used are suitable with high efficiency for investigating relationships among the accessions of this species. The results of principal coordinate analysis (PCoA) showed that the first three components explained 41.88% of the total genetic variance changes. Cluster analysis classified the evaluated accessions into four main groups, which was confirmed by the results of principal coordinate analysis (PCoA). According to the cluster grouping pattern, in some cases the accessions with the same geographical origin were placed in separate groups and also the presence of non-Iranian accessions in the group of Iranian accessions was observed. The results of population structure analysis confirmed the populations genetic exchanges and showed that the classification of the studied accessions is independent of their geographical origin. In general, the results showed high genetic diversity among the studied accessions of Ae. tauschii, therefore, the high genetic diversity leads to finding new allelic sources and introducing desirable alleles, which will be of great value to wheat breeders for use in breeding programs.

Article number: 5

Keywords: Aegilops, Genetic diversity, Microsatellite, Wild wheat.

Full-Text [PDF 727 kb] (135 Downloads)

Type of Study: Applicable | Subject: Subject 01
Received: 2023/12/11 | Accepted: 2024/05/28 | Published: 2024/08/25