Browsing by Author "Zencirci, N."

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EVALUATION OF BREAD AND EINKORN WHEAT UNDER IN VITRO DROUGHT STRESS
(PAKISTAN AGRICULTURAL SCIENTISTS FORUM, 2017) Aslan, D.; Aktas, H.; Ordu, B.; Zencirci, N.
The purpose of this study was to investigate the resistance of bread and einkorn wheat genotypes under in vitro conditions against drought stress during germination. Twelve bread and ten einkorn wheat genotypes were used as plant material and seven drought stress levels were applied based on a three-replicate factorial restricted randomized block design in order to investigate their effects on germination rate (GR), germinating power (GP), coleoptile length (CL), shoot length (SL), root length (RL), shoot root length ratio (SRLR), root fresh weight (RFW), root dry weight (RDW), and root fresh dry weight ratio (RFDWR) during the year 2014-2015. PEG - 6000 was used to evaluate the effect of drought stress under in vitro conditions on the wheat genotypes. The values of all traits were decreased by the increased effect of PEG levels (p = 0.05). The results of the variance analysis showed that the genotypes had significant statistical differences for the examined traits under drought stress (p < 0.05). According to the results of the GGE biplot analysis, of the total variation between the genotypes and traits investigated under drought stress (75.97%), PC1and PC2 represented 51.51% and 24.47%, respectively. In addition, einkorn wheat populations were located in the sector of GR, GP, and SRL, which means that these populations had a greater performance for these traits under drought stress conditions. Bread wheat and einkorn genotypes behaved differently for the traits under drought stress. It is considered that the results of the field and in vivo experiments for cold and drought stress will contribute to producing reliable suggestions.
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.