Browsing by Author "Zencirci, Nusret"

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Phylogenetic and Taxonomic Relationship of Turkish Wild and Cultivated Emmer (Triticum Turgidum Ssp. Dicoccoides) Revealed by Ipbs-Retrotransposons Markers
(Friends Science Publishers, 2019) Aktaş, Hüsnü; Nadeem, Muhammad Azhar; Aktas, Husnu; Yeken, Mehmet Zahit; Zencirci, Nusret; Nawaz, Muhammad Amjad; Baloch, Faheem Shehzad
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. Karacadag 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. (C) 2019 Friends Science Publishers
Stripe Rust Partial Resistance Increases Spring Bread Wheat Yield in South-eastern Anatolia, Turkey
(WILEY-BLACKWELL, 2016) Aktaş, Hüsnü; Zencirci, Nusret
Stripe rust caused by Puccinia striiformis f.sp. tritici is the most serious disease of wheat globally including south-eastern Anatolia of Turkey, where wheat originated. In this study, 12 spring wheat genotypes were artificially inoculated and preserved in two locations, Diyarbakr and Adyaman, during the 2011-2012 season to investigate loss in yield and yield components. Genotypes were evaluated at the adult plant stage using two partial resistance parameters: final disease severity and area under the disease progress curve (AUDPC). AUDPC ranged from 14.8 to 860 in Diyarbakr, and 74 to 760 in Adyaman. Yield loss ranged from 0.6 to 68.5% in Diyarbakr and 9.8 to 56.8% in Adyaman. Genotypes G1, G5, G7 and G8 were found to lose less yield, while higher yield loss was observed in G3, G4 (Nurkent), G5 and G9 (Karacada-98). The highest loss in thousand kernel weight was observed in a susceptible cultivar Karacada-98 in Diyarbakr followed by 43.4 and 24.4% in Adyaman. Test weight loss reached 8.89% in Diyarbakr and 20.8% in Adyaman. Yield loss and AUDPC had a positive significant relationship. Based on the values of AUDPC, final disease severity and yield loss, three major clusters were formed for 12 wheat genotypes. Partially resistant genotypes were found to lose less grain yield and seemed to be stronger against severe stripe rust pressure.