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Öğe Biomass and seed yield stability of pea genotypes(WFL PUBL, 2009) Tamkoç, Ahmet; Üstün, Ali; Altınok, Suzan; Açıkgöz, EsvetSeed and biomass yield and yield components in eight-leafed and semi-leafless pea (Pisum sativum L.) genotypes were evaluated under dry and irrigated conditions at two locations (Ankara and Konya) in 2003 and 2004. The main concern was the adaptability and phenotypic stability of investigated genotypes. Experiments were carried out in a split plot design with 3 replications. Water status and genotypes significantly affected most yield components, biomass and seed yield in individual years and over years at both locations. Differences among conventionally leafed and semi-leafless lines for biomass and seed yield were not consistent between years and water status treatments. However, overall means of biomass yield and stability analysis showed that two semi-leafless genotypes, P57B and P57K, were superior to leafed genotypes in this study. The highest seed yield was obtained from semi-leafless genotypes P57B and P57K and the leafed genotype P 104. Stability analysis with data of both locations suggested that P57B was adapted to irrigated conditions, P57K and P104 were adapted to dry conditions.Öğe Comparative Effects of Drought and Salt Stress on Germination and Seedling Growth of Cephalaria Syriaca as a New Oilseed Crop(2012) Ada, Rahim; Tamkoç, AhmetCephalaria syriaca seed and oil are utilized for medical, agricultural and as forage crops in animal nutrition and oil for biodiesel. The seeds of Cephalaria syriaca from Sivas-Turkey population were used for this study. The study was conducted in a seed laboratory of the Department of Field Crops, Selcuk University, Konya-Turkey. Germination and early seedling growth were studied using distilled water (control) and under osmotic potentials of -2, -4 and -6 bar for salt (NaCl) and drought (PEG: Polyethylene glycol 6000), respectively. According to the data, it is estimated that Cephalaria syriaca is able to adapt NaCl and PEG 6000 stress conditions. Our results showed that all of characters rate were affected by NaCl and PEG 6000. Our findings in Cephalaria syriaca revealed that inhibition of germination at an equivalent water potential of NaCl and PEG resulted from osmotic effect rather than salt toxicity. © Sila Science.Öğe Comparison of root and shoot traits of different wheat species and wild wheat relatives: Does feature of shoot biomass have positive and significant relationships with grain yield and root traits?(UNIV ZULIA, FACULTAD AGRONOMIA, 2017) Akman, Hayati; Akgün, Necdet; Tamkoç, AhmetThis study targeted to investigate some root and shoot traits and their relationship in 47 different genotypes such as cultivars, lines, landraces, ancient wheat species and wild wheat relatives belonging to 14 different species at long tubes of PVC under field weather conditions. It was found significant differences between genotypes in terms of root and shoot traits (P < 0.01). The investigated traits varied among the genotypes, ranging from 0.97 to 6.88 g for root biomass, 0.07 to 0.34 for root to shoot ratio, 5.9 to 25.0% for root to total biomass ratio, 4.3 to 34.7 for tiller number and 7.5 to 52.6 g for shoot biomass. Ancient wheat species such as Triticum monococcum (Kelycras), T. turgidum, T. spelta, a landrace (Vanli), and cultivars (Daws High PPO, ARS Amber and AK 702) had large root biomass among the genotypes. Therefore, these genotypes could be helpful forimproving genotypes with large root system in breeding programs. The study also showed that shoot biomass had significant and positive relationships with root biomass (0.572**), root length (0.441**) and crown root number (0.245**) as well as grain yield (0.911**). Accordingly, feature of shoot biomass might be used as selection criteria in breeding program to improve genotypes with superior root system and high grain yield.Öğe Determination of protein degradability of alfalfa hay via buffer or protease(TAYLOR & FRANCIS LTD, 2018) İnal, Fatma; Tamkoç, Ahmet; Alataş, Mustafa Selçuk; Kahraman, Oğuzhan; Özbilgin, Abdullah; Coşkun, BehiçThis study was conducted to determine the effect of different vegetative periods on protein fractions of alfalfa hay and to compare two different methods for estimation of its protein degradability. In this study, 44 alfalfa hay samples cut in late vegetative, late bud, early bloom and late bloom were used. Crude protein decreased with advancing maturity (p<.05), but neutral detergent insoluble nitrogen and acid detergent insoluble nitrogen were similar. Protein degradability of the samples was estimated using Streptomyces griseus protease or borate-phosphate buffer, kinetic model, as described in Cornell Net Carbohydrate Protein System (CNCPS). Alfalfa hay samples were subjected to proteolysis for 30h with 0.115 U/mL or 0.230 U/mL of the protease at pH 6.8. There was a moderate correlation (0.66, 0.72) between enzymatic and buffer method estimates with protein degradation. As vegetation progresses, rapidly degradable fraction (A) decreased (p < .05) and undegradable fraction (C) increased (p < .05), while potentially degradable fraction (B) was unchanged. Rumen degradable protein content decreased (p < .05) with advancing maturity. The enzyme/duration limits should be standardised and investigated whether the protease enzyme alone is sufficient for all forages.Öğe Effect of Temperature and Storage Time on Germination in Forage Peas(Selçuk Üniversitesi, 2022) Türker, Cafer; Tamkoç, AhmetThis research was carried out in 2016 in order to determine the most suitable germination temperatures of the seeds of 4 different forage pea varieties (Furkan, Bilgehan, Özkaynak, Taşkent) stored in paper bags for 7 years and 8 years at room temperature, and the damage that may occur on plants at subzero temperatures after germination were carried out. In the experiment, which was established with 4 replications in the "Random Plots in Factorial Experiment Design" under laboratory conditions; Number of germinated seeds on the 4th, 7th and 10th days at 5°C, 15°C, 25°C and 35°C temperatures, and after the 10th day, frost damage in plants kept at -5°C for 3 days, root length, stem length, root length/stem length ratio was determined. According to the findings of the research, while the best germination took place at 25°C, the most suitable germination temperature was determined between 15°C and 25°C. In addition, it was revealed that the seeds produced in 2008 germinated more than the seeds produced in 2016. On the other hand, among the plants kept at -5°C, it was determined that the varieties named Taşkent and Özkaynak, which were germinated at 15°C and 25°C, suffered the least damage, and the highest average in the comparison of the total height values was found in the Taşkent variety germinated at 25°C.Öğe Introgression of salt tolerance genes in Turkish wheat genotypes using marker-assisted backcross breeding(ELSEVIER SCIENCE BV, 2018) Khan, Mohd Kamran; Pandey, Anamika; Hamurcu, Mehmet; Gezgin, Sait; Topal, Ali; Tamkoç, Ahmet; Akgün, Necdet[Abstract not Available]Öğe Kayseri yoncasından seçme elçi klonlarının Konya şartlarında diğer varyetelerle karşılaştırılması(Selçuk Üniversitesi Fen Bilimleri Enstitüsü, 1992-12-25) Tamkoç, Ahmet; Elçi, ŞahabettinBu Araştırma, Konya şartlarında, Kayseri yoncasından seçme Elçi klonlarının serbest tozlaşmalarından elde edilen numuneler (K-5, K-7, K-26, K-29, K-41 ve K-M) ile bazı tescilli varyetelerin (Ranger, Caliverde-65, Bilensoy-80 ve Kayseri yoncası) karşılaştırılması amacıyla yapılmıştır. Sulu şartlarda yürütülen bu araştırmada, ot verimi, tohum verimi ve bazı agronomik özellikler incelenmiştir. Araştırma iki ayrı deneme halinde yürütülmüştür. Denemeler tesadüf blokları deneme tertibine göre dört tekrarlamalı olarak kurulmuştur. Ekim, 1987 yılında yapılmış ve araştırma sonuçları 1988 ve 1989 yıllarında alınmıştır. Ot verimi ile ilgili denemede, her yıl dört biçim yapılmıştır. Burada; yeşil ot (4093.54 kg/da), kuru ot (972.64 kg/da), protein verimi (172.84 kg/da), bitki boyu (77.84 cm) ve protein oranı (%17.81) tespit edilmiştir. Yeşil ot, kuru ot ve protein verimi arasında % 1 seviyesinde önemli ilişkiler (korelasyon) bulunmuştur. Tohum verimi denemesinde; bitki boyu (94.19 cm), anadaldaki salkım (17.37 adet), salkımdaki çiçek (27.95 adet) ve salkımdaki meyve sayısı (16.22 adet) bulunmuştur. Ayrıca meyve- çiçek oram (% 60.31), meyvedeki kıvrım (2.00 adet), meyvedeki tohum (4.86 adet) ve kıvrımdaki tohum sayısı (2.44 adet) ile tohum verimi (49.63 kg/da) tespit edilmiştir. Salkımdaki çiçek sayısı ile; salkımdaki meyve ve meyvedeki tohum sayısı ve meyve-çiçek oram arasında % 1 seviyesinde önemli ilişkiler bulunmuştur. Bundan başka, salkımdaki çiçek sayısı ile meyvedeki kıvrım sayısı arasında % 5 seviyesinde önemli bir ilişki belirlenmiştir. Salkımdaki meyve sayısı ile meyvedeki tohum sayısı arasında da % 1 seviyesinde önemli bir ilişki olduğu ortaya çıkmıştır. Meyve-çiçek oranı ile meyvedeki tohum sayısı; meyvedeki tohum sayısı ile meyvedeki kıvrım ve kıvrımdaki tohum sayısı arasında ise % 5 seviyesinde önemli ilişkilerin olduğu tespit edilmiştir.Öğe Screening for root and shoot traits in different wheat species and wild wheat relatives(SOC BOTANICA MEXICO, 2017) Akman, Hayati; Akgün, Necdet; Tamkoç, AhmetBackground: Definitive comparison on root traits of wheat landraces, ancient wheats and wild wheat relatives are scarce. Those adaptive genetic resources with superior root and shoot traits can be utilized in breeding programs. Questions: Do modern wheats have more superior root and shoot traits than ancient wheat species and wild wheat relatives? Studied species: We performed large-scale screening for significant root and shoot traits of 47 different genotypes including cultivars, lines, landraces, ancient wheat species and wild wheat relatives belonging to 14 different species. Study site and years: was carried out in Central Anatolian Conditions of Turkey from October, 2013 to July, 2014. Methods: This study was conducted at 200 cm long tube under field weather conditions where plants can translate superior performance. Results: A wide range of variations in terms of root and shoot traits were observed among the screened wheat cultivars, lines, landraces, ancient wheat species and wild wheat relatives. The grain yield per plant and root length per plant varied from 2.11 to 12.30 g and 134.7 to 250.7 cm in the cultivars, lines and landraces, respectively, while they ranged from 0.23 to 6.49 g and 170.0 to 240 cm in the ancient wheat species and wild wheat relatives. Conclusions: The superior genotypes that had longer root system and high grain yield can be considered in breeding programs to improve high yielding genotypes and deep-rooted system.Öğe Th e application of ISSR-PCR to determine the genetic relationship and genetic diversity between narrow leaved bluegrass (Poa angustifolia) and rough bluegrass (Poa trivialis) accessions(2011) Arslan, Emine; Tamkoç, AhmetBu çalışmada basit diziler arası tekrarlar (ISSR) markerlar kullanılarak Poa angustifolia ve Poa trivialis türleri arasındaki genetik akrabalığı ve tür içi genetik çeşitliliği belirlemek amaçlanmıştır. ISSR amplikonlarının dar yapraklı salkımotu ve adi salkımotu aksesyonlarının ayırımında uygulanabilirliği değerlendirilmiştir. Yirmi seçilmiş ISSR primeri kullanılarak 363’ü polimorfi k (% 90,52) olan toplam 401 bant üretilmiştir. Poa türlerine ait aksesyonlar arasındaki genetik benzerlik Nei’nin genetik benzerliği kullanılarak hesaplanmıştır ve UPGMA (unweighted pair group method with arithmetic) kümeleme analizi bir dendrogram oluşturmak için kullanılmıştır. UBC836, M6 primerleri türler arasında ayrımı sağlamak için en elverişli primerler olduğu görülmüştür. Özellikle tür içi farklılıklar ıslah çalışmalarında büyük önem taşıdığı için M5 ve UBC812 primerleri sırasıyla P. trivialis ve P. angustifolia aksesyonlarının ayırımında idealdir. UBC856 primeri hem tür içi hem de türler arası ayırımda ideal olduğu görülmüştür. ISSR parmakizi tekniğinin kullanımı, bitki ıslahı için doğru başlama materyalini belirlemek için ve Poa aksesyonlarının ayırımı çalışmaları için duyarlı ve tekrarlanabilir olduğu doğrulanmıştır.
