Browsing by Author "Aktaş, H."

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Investigating the Impact of Salt Stress on Wild Wheat Germplasm Collected From Turkey
(Pakistan Botanical Society, 2025) Aktaş, H.
Wheat is among the staple crops providing daily food requirements for millions of people all over the world. However, wheat production is being to limited to various biotic and biotic stresses resulting through climate change. It is believed that if climate change activities continue at this pace, present and upcoming generations will pace a huge food crisis. Wheat wild relatives provide a cushion to the research community by acting a source of novel variations that can be used for the development of new cultivars. Wild wheat accessions belonging to various polyploidy levels i.e., T. boeoticum, T. dicoccoides and T. durum landraces collected from different locations of Fertil Crescent were used as plant material and were screened against salinity stress at the seedling stage. The ANOVA results showed significant differences between genotypes, stress treatments, and their interaction. The results indicate that T. dicoccoides genotypes were found more tolerant to salinity than other species for seedling weight. The results reveal that T. boeoticum genotypes were more tolerant to salinity than other species for seedling root length. The results indicate that T. dicoccoides genotypes were found more tolerant to salinity than other species for root weight. Regarding shoot length, T. dicoccoides genotypes performed better compared to others. T. durum genotypes had the highest STI value (0.53) for seed germination percentage. Thus, T. durum landraces were found to be more tolerant to salinity in terms of various studied traits and may serve as potential genetic sources for the development of salinity tolerance wheat cultivars. © 2025, Pakistan Botanical Society. All rights reserved.
Phylogenetic and Taxonomic Relationship of Turkish Wild and Cultivated Emmer (Triticum Turgidum Ssp. Dicoccoides) Revealed by Ipbsretrotransposons Markers
(Friends Science Publishers, 2019) Arystanbekkyzy, M.; Nadeem, M.A.; Aktaş, H.; Yeken, M.Z.; Zencirci, N.; Nawaz, M.A.; Baloch, F.S.
Wild emmer (Triticum turgidum ssp. dicoccoides) is the progenitor of cultivated wheat. Turkey is the main center of wheat and plays a vital role in the spread of various crops among the continents. Karacadağ region is considered as the domestication center of wheat and still, hundreds of landraces are prevalent. A total of 29 wild emmer landraces, 4 cultivated emmer wheat (T. turgidum ssp. dicoccum) and five durum wheat (T. turgidum ssp. durum) cultivars were investigated for the genetic diversity and phylogenetic relationship using the iPBS-retrotransposons markers. Mean polymorphism and polymorphic information contents (PIC) were 87.85% and 0.660, respectively. Mean effective numbers of alleles (1.961), Shannon's Information Index (0.682) and gene diversity (0.489) reflected the occurrence of a great level of variations. T17 and Chermik- 1 genotypes were found much distinct and breeding valuable genotypes for wheat breeding. The unweighted pair-group method with arithmetic means (UPGMA) divided all genotypes by their genetic makeup and geographical locations. Among 3 species, UPGMA based clustering clearly separated the durum wheat from wild emmer and cultivated emmer wheat. Results are clearly supported by the principal coordinate analysis (PCoA) and model-based structure algorithm. Information provided herein comprehensively reflected the power of iPBS-retrotransposons for the diversity and phylogenetic relationship investigation and reflected that this marker system can be effectively applied to investigate phylogenetic and taxonomic relationship in any crop due to its universal nature. © 2019 Friends Science Publishers.