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    EFFECT OF SOIL CONDITIONERS APPLIED TO SEED ON GRAIN YIELD AND YIELD CHARACTERISTICS IN WHEAT
    (Soc Field Crop Sci, 2024) Yuksel, Orhan; Balkan, Alpay; Gocmen, Damla Balaban; Bilgin, Oguz; Baser, Ismet
    This study, researching the effect of seed treatment with liquid soil conditioners on yield properties of bread wheat varieties, was carried out during 2017 and 2018 years in the experimental field of Tekirdag Namik Kemal University Faculty of Agriculture, Department of Field Crops. The experiments were conducted with 3 bread wheat varieties and 4 soil amendments (control + 3 different liquid soil amendments) in 3 repetitions. In the experiment, 4 different treatments including 3 different soil regulators and 1 control (T1: Control; T2: 13-58+glycine betaine; T3: 15% organic matter, 15% humic and fulvic acid+0.03% potassium and T4: 25% organic matter + 65% humic acid + 6% potassium (T4) were made. Seeds treated with a spray and then dried were sown as split plot experimental design. In the study, the variations in the plant height (PH), spike length (SL), number of spikelets per spike (NSS), number of grains per spike (NGS), grain weight per spike (GWS), spike fertility index (SFI), harvest index (HI) and grain yield (GY) parameters were investigated for the bread wheat varieties. According to the research results, all soil conditioners applied to seeds were determined to affect the investigated characters at a statistically significant level. For the PH parameter, T3 treatment caused a significant increase, while for the SFI parameter, T2 treatment caused a significant increase. For the HI parameter, treatments T2 and T3 had the highest effect. Spike characteristics like SL, NSS and NGS increased compared to controls with all soil conditioner treatments, while parameters like GWS and SFI differed according to variety. Grain yield, the most important parameter for wheat, provided the highest results in different soil conditioner treatments depending on the varieties. T4 treatment caused clear increases in the SL, NSS, NGS, GWS and GY parameters. According to the data obtained was evaluated, soil conditioner applications caused a significant increase in the parameters examined in wheat. T4, which contains 25% organic matter + 65% humic acid + 6% potassium, was determined as the most effective soil conditioner for many parameters.
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    Heterotic grouping of wheat hybrids based on general and specific combining ability from line x tester analysis
    (Peerj Inc, 2024) Deviren, Birol; Bilgin, Oguz; Kutlu, Imren
    The most important step in plant breeding is the correct selection of parents, and it would be wise to use heterotic groups for this. The purpose of this study is to analyse yield and its components as well as genetic diversity in line x tester wheat populations. It also seeks to present a coherent framework for the isolation of early superior families and the development of heterotic groups in bread wheat. F1 1 and F2 2 generations of 51 genotypes, including 36 combinations between 12 lines and three testers and 15 parents, were evaluated for yield and its components in a three-replication experiment according to the randomized block design. Line x tester analysis of variance, general and specific combining abilities, heterosis, heterobeltiosis and inbreeding depression were calculated. Heterotic groups created based on general and specific combining abilities were compared with each other. The results showed that there was sufficient genetic variation in the population and that further genetic calculations could be made. The selections made based on general and specific combining abilities, heterosis values and average performance of genotypes without heterotic grouping indicated different genotypes for each feature. The creation of heterotic groups made it possible to select genotypes that were superior in terms of all the criteria listed. It was concluded that heterotic groups created based on specific combining abilities may be more useful for breeding studies.
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    Investigation of Grain Yield and Biscuit Quality Capacities of Soft Bread Wheat (T. aestivumL.) Advanced Lines
    (Univ Namik Kemal, 2024) Erenler, Sultan; Bilgin, Oguz; Balkan, Alpay; Gocmen, Damla Balaban; Baser, Ismet
    The study was carried out with a total of 24 bread wheat genotypes including 20 advanced lines and 4 check varieties (Gerek79, Carisma, Bayraktar2000, and Artico) with soft grain structure and four replications according to the randomized complete block design in Hamidiye and Karabay & imath;r locations of Eski & scedil;ehir during the 2014-2015 growing season. In the study, grain yield, thousand grain weight, test weight, kernel hardness, Zeleny sedimentation value, ash content and protein content were investigated in the genotypes. According to the results of the analysis of variance performed for the traits examined in the study, the differences between location, bread wheat genotypes and interaction averages were found to be statistically significant, except for Zeleny sedimentation value and protein content, respectively. It is understood that there is a wide variation between genotypes and locations for other traits, except for the protein ratio trait. While location effects are higher than genotype effects for thousandgrain weight, test weight, ash content and protein content, genotype effects are higher than location for single kernel characterization system and Zeleny sedimentation value. The mean grain yield of biscuit wheat genotypes ranged from 4425kg ha-1to 2000kg ha-1. Considering the trial quality results; it was observed that there was a high rate of variation between genotypes for thousand grain weight (32.67-48.61 g), test weight (82.40-75.25 kg hl-1), kernel hardness(17.08-39.68), Zeleny sedimentation value(20.63-33.00 ml) and ash content (0.478% -0.610%), respectively. While B & Idot;S-3, B & Idot;S-6, B & Idot;S-9, B & Idot;S-18, B & Idot;S-21 and B & Idot;S-22 were best-performed lines for grain yield, B & Idot;S-3, B & Idot;S-9, B & Idot;S-11, B & Idot;S-12, B & Idot;S-13 and B & Idot;S-19 were the prominent lines for biscuit-making quality trait. It was concluded that it would be appropriate to include these lines in yield trials before registration as a variety of candidates.
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    THE EFFECTS OF WATER STRESS ON GRAIN YIELD AND YIELD COMPONENTS IN BREAD WHEAT
    (Academic Publishing House, 2024) Başer, Ismet; Akseki, Seher Semerci; Göçmen, Damla Balaban; Balkan, Alpay; Bilgin, Oguz
    The study was carried out with 24 wheat genotypes at different drought levels. The 24 genotypes used in the study were determined based on data from 45 genotypes at drought levels created with PEG. The experiment was carried out in plastic tubes 30 cm wide × 70 cm high. In the study, plant height, spike length, number of spikelets per spike, number of grains per spike, grain weight per spike, root length and root weight were investigated. When the plants were grown in tubes with 100%, 75%, 50%, and 25% field capacity, the highest values for all properties, except plant height, were obtained in plants with 100% field capacity. According to the data obtained, Bora, NKU Ergene, Enola and Rumeli were least affected by drought, while LG 59, Adelaide and Kavlıca genotypes were most affected by drought. Root length increased with drought and the longest roots were at 25% field capacity, which was the highest level of drought. The root weight was highest at 100% field capacity and lowest at 25% field capacity. Spike length, number of spikelets per spike, number of grains per spike, and grain weight per spike decreased significantly as the level of drought increased. © 2024 Academic Publishing House. All rights reserved.