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Landraces are significant genetic resources for wheat breeding as they can adapt to their regions of origin. However, for this genetic resource to be used effectively in wheat breeding, it should be screened molecularly for some functional genes. The study used 123 landraces and modern bread wheat varieties grown in Turkey. We screened the genetic materials for the wbm , waxy genes, High Molecular Weight Glutenin Subunits (HMW-GS), and the Lr34 gene, which provides adult plant resistance to rust disease. There were three different alleles for the Glu-A1 locus, six different alleles for the Glu-B1 locus, and five different alleles for the Glu-D1 locus. For the Glu-A1 locus, a null subunit was found in 73 genotypes (59.3%) and that is the most common subunit. 7+8 subunit is the most common alleles (65.8%) in the Glu-B1 locus. In the Glu-D1 locus, 2+12 is the most common (63.4%) subunit associated with poor gluten quality, and 78 genotypes contain this subunit. When the three loci were evaluated, 23 combinations were found among all the genotypes screened. The two combinations include two new subunits (2+12ˈ and 2+12*) whose effects on bread quality have not yet been evaluated. Halbert and Gülümbür-Makas wheat cultivars contain the wbm gene, while six cultivars contain the Lr-34 gene. Six genotypes have only Wx-A1 and Wx-D1 alleles for waxy alleles. The results revealed that the landraces did not contain the genes screened within the scope of the study in terms of functional genes used in wheat breeding. The results indicated that we should use modern cultivars containing target genes in breeding programs when these landraces are used as the parent.

This study was conducted during two crop seasons to investigate the effect of nitrogen fertilizer quantity and application form on grain yield and quality in Eskisehir Transitional Zone Agricultural Research Institute by using seven bread wheat cultivars in rainfed and eight in irrigated conditions. In the study, urea as a source of nitrogen was applied in heading time (Zadoks 59) in granular and foliar form. In all treatments grain yield, some technological quality characteristics were determined of the genotypes. In both conditions while sedimentation value, protein content, aggregation energy (AGGEN) and maximum torque (BEM) values increased, peak maximum time (PMT) decreased with foliar urea applications. it was determined that there were statistically significant differences between the varieties in terms of SDS sedimentation values in both rainfed and irrigated conditions. In this study, In irrigated and rainfed conditions the values obtained from foliar urea applications compared to granular ones with relation higher bread quality in the genotypes which contain Glu-A1 locus 2* subunit; 9% for grain yield, 6.5% for protein content, 17.0% for sedimentation value and 3.8% increase of BEM, Glu-D1 locus; 5+10 subunit 8% for grain yield, 5.6% for protein content, sedimentation 16.0%, 6.4% for BEM increase, for Glu-B1 locus; 7+9 subunit 7.0% for grain yield, 6.0% for protein content, 19.6% for sedimentation value, and 7.2% for BEM value increase. This study was observed that the foliar application during the heading time provided the improvement of bread wheat grain yield and quality characteristics.

Rye introgressions are important contributors to the genetic diversity of wheat. In this study, we investigated the effects of a wheat-rye translocation 1RS.1BL in bread wheat on kernel and bran properties and mineral content. The plant material consisted of 147 recombinant inbred lines (RILs) and five control cultivars, including the parent. The genotypes were grown in Turkey at two different locations for two consecutive years.The protein, starch, fat, ash, dry matter, acid detergent insoluble fiber (ADF), neutral detergent insoluble fiber (NDF), potassium (K), phosphorus (P) and magnesium (Mg) contents of kernels and bran of the RILs were determined. Statistically significant differences were found between the genotypes in terms of all the examined characteristics except the amount of dry matter. The RILs carrying translocation 1RS.1BL had a higher average ADF, NDF, protein content, ash content, K, Mg, and P contents of kernels, as well as a higher average ADF, NDF, ash, and K bran contents than the RILs without the translocation. The bran of the RILs without the translocation had higher values in terms of fat, starch, and phosphorus content. The results indicate that wheat- rye translocation 1RS.1BL has a significant effect on both whole wheat kernel and bran content, and can be used to enrich the content of wheat bran.