1,720,964 research outputs found
Characterization of some safflower genotypes and their hybrids, and development of advanced breeding lines
No full textTekirdağ Namık Kemal Üniversitesi Ziraat Fakültesi Tarla Bitkileri Bölümü araştırma ve uygulama arazisinde 2018, 2019 ve 2020 yıllarında yürütülen bu araştırmada, line (5) × tester (9) çoklu dizi yöntemiyle elde edilen 45 F1 melez kombinasyonu ve ebeveynlerinin bazı tarımsal ve teknolojik özellikleri ile bu genotiplerin genetik çeşitliliğinin belirlenmesi amaçlanmıştır. Gibberellik asit kullanılarak kısırlaştırılan genotiplerin melezlemesinden elde edilen 45 F1 melez kombinasyonu ve 14 ebeveyn (line ve tester) ile yürütülen deneme tesadüf blokları deneme desenine göre üç tekerrürlü olarak kurulmuştur. Bu amaçla, çıkış gün sayısı, çiçeklenme gün sayısı, olgunlaşma gün sayısı, bitki boyu, dal sayısı, tabla sayısı, tabla çapı, tabladaki tohum sayısı, 1000 tane ağırlığı, tohum verimi, kabuk oranı, ham yağ oranı, yağ verimi, linoleik ve oleik yağ asidi içeriği gibi özellikler incelenmiştir. Çalışma kapsamında ebeveynlerin (line ve tester) genel kombinasyon yetenekleri ve melez genotiplerin özel kombinasyon yetenekleri belirlenmiş, melez genotiplerin heterosis ve heterobeltiosis oranları hesaplanarak ümitvar döller belirlenmeye çalışılmıştır. Araştırma sonuçlarına göre hem F1 hem de F2 kademesinde yüksek tohum verimi ve yağ içeriğine sahip genotipler BA12, BA18, BA24, EC4, EC5, EC6, EC11, EC18, EC20 ve EC21 melezleri olmuştur. Belirlenen bu 10 ümitvar melez genotip yeterli varyasyonun sağlanabilmesi amacıyla diğer melez genotiplerle birlikte ileri kademelere taşınacak ve seleksiyona F2 kademesinden sonraki kademelerde (F3-F4) başlanacaktır. Çalışmada genetik çeşitliliği belirlemek amacıyla kullanılan 10 SSR markerden 6'sının polimorfik olduğu belirlenmiş ve toplamda 28 allel tespit edilmiştir. Ortalama efektif allel sayısı (Ne) 3.172, gözlenen ortalama heterozigoti (Ho) 0.548, beklenen ortalama heterozigoti (He) 0.680, ortalama kendileme katsayısı (Fit) 0.187, ortalama toplam genetik varyans (Fst) 0.593, ortalama polimorfik bilgi içeriği (PIC) 0.664 ve ortalama Shannon bilgi indeksi (I) 1.251 olarak hesaplanmıştır. Markerlerin ortalama PIC değerlerine bakıldığında gelecekte yapılacak olan aspire özgü moleküler çalışmalarda kullanılabileceği görülmektedir. Ayrıca gelecekte yapılacak ıslah çalışmalarında, özellikle birbirine genetik olarak uzak mesafede bulunan melez genotipler arasında yapılacak olan çift melezlemelerle genetik varyasyon artırılarak daha üstün performans sahip hatların elde edilme olasılığı yükseltilmiş olacaktır.The objectives of this study were to determine some agricultural and technological traits of 45 F1 hybrid combinations obtained by line (5) × tester (9) method and their parents at the experimental field of Field Crops Department, Faculty of Agriculture, Tekirdağ Namık Kemal University, in 2018, 2019 and 2020 and investigate genetic diversity among them by using SSR method. The field experiment including 45 F1 hybrid and their 14 parents was established based on randomized complete plot design with three replications. Fifteen agronomic and technological characters such as days to emergence, days to flowering, days to maturity, plant height, branch number, head number, head diameter, number of seeds per head, 1000 seed weight, seed yield, hull ratio, oil content, oil yield, linoleic and oleic acid content were investigated in the study. Furthermore, the general combination abilities for the parents (line and tester) and the special combination abilities, heterosis and heterobeltiosis for the hybrids were calculated and those values were used to speculate promising lines for the future breeding projects. Based on the results of the study, genotypes with high seed yield and oil content in both F1 and F2 generations were BA12, BA18, BA24, EC4, EC5, EC6, EC11, EC18, EC20 and EC21 hybrids. The promising genotypes will be grown in the next generations together with the other hybrid genotypes in order to ensure sufficient variation, and the selection will be started in the later generations such as F3 and F4. Six out of 10 SSR markers used in the study to determine genetic diversity were found polymorphic. It was calculated as the total number of alleles 28, average effective alleles (Ne) 3.172, observed mean heterozygous (Ho) 0.548, expected mean heterozygous (He) 0.680, mean coefficient of self-realization (Fit) 0.187, mean total genetic variance (Fst) 0.593, mean polymorphic information content (PIC) 0.664 and mean Shannon information index (I) 1.251 within polymorphic 6 SSR markers. Considering the average PIC values of the markers, it is seen that they can be used in future molecular studies for safflower. In addition, in future breeding studies, promising lines can be created by crossbreeding among genotypes that are genetically distant from each other in order to provide genetic variation
Identification of cold tolerance and some agronomic traits of advanced safflower genotypes developed by hybridization
No full textThe development of winter-tolerant safflower genotypes is crucial for the improvement of global safflower agriculture. The aim of the present study was to determine the cold tolerance abilities and some agricultural characteristics of advanced safflower genotypes. For this purpose, 10 advanced safflower genotypes were used in four different locations. The experimental design was a randomized complete block design with three replications. Winter survival and agricultural characteristics were significantly affected by growing season, location and genotype. Winter survival varies between 86.43% and 93.91% among the genotypes which is promising for winter sowing. As the average of 2 years, the highest oil content (36.25%) was observed in genotype EC21 and it was followed by genotypes EC11 (35.51%) and EC20 (35.49%). As with the seed yield, the high winter survival of genotypes with high oil content is highly promising in terms of winter sowing. Safflower should be grown in winter with mild temperature regions for high seed yield and sustainable safflower production. Therefore, this study focused on winter-tolerant genotypes that are superior one in terms of seed yield and oil content
Effects of applications gibberellic acid and salicylic acid on seed yield and quality traits of safflower (Carthamus tinctorius L.)
No full textBu araştırma 2014 yılında Namık Kemal Üniversitesi Ziraat Fakültesi Tarla Bitkileri deneme alanında yürütülmüştür. Deneme ‘Tesadüf Bloklarında Bölünen Bölünmüş Parseller Deneme Deseni’ne göre 3 tekrarlamalı olarak kurulmuştur. Araştırmada gibberellik asit ve salisilik asidin aspirde verim ve kalite özelliklerine etkilerinin belirlenmesi amaçlanmıştır. Çalışmada metaryal olarak iki aspir çeşidi (Dinçer ve Balcı) kullanılmıştır. Denemede salisilik asidin kontrol, 0.1, 0.5 ve 1 mM dozları ile gibberellik asidin kontrol, 100, 200 ve 300 ppm dozları kullanılmıştır. Belirtilen bu dozlar çiçeklenme öncesi dönemde bitkiye püskürtme yoluyla uygulanmıştır. Bu amaçla denemede bitki boyu, dal sayısı, tabla sayısı, tabladaki tohum sayısı, tabla çapı, çiçeklenme gün sayısı, olgunlaşma gün sayısı, tane verimi, 1000 tane ağırlığı, kabuk oranı, iç oranı, yağ oranı, protein oranı ve yağ verimi gibi karakterler incelenmiştir. Elde edilen verilere göre, tane verimi ve yağ oranı bakımından çeşitler ile hormonlar arasındaki farklılıkların yanı sıra çeşit x hormon ve hormon x doz interaksiyonları da önemli bulunmuştur. Dekara en yüksek tane verimi (120,496 kg/da) SA uygulamasıyla Dinçer çeşidinden, en düşük verim ise (55,111 kg/da) GA3 uygulamasıyla Balcı çeşidinden elde edilmiştir. 300 ppm GA3 uygulamasıyla yağ oranı %34,3’ten %41,2’ye kadar artmış, SA uygulaması yağ oranına önemli bir etkide bulunmamıştır.This research was conducted at Applying Research Field, Faculty of Agriculture University of Namik Kemal in 2014. The research was conducted using a randomized complete block, split block design with three replicates. The aim of this research was to determine of effects of gibberellic and salicylic acid on seed yield and quality traits of safflower. The two cultivars of safflower (Dincer and Balcı) was used as a material of this research. In this research different doses of salicylic acid (SA) (control, 0.1, 0.5 and 1 mM) and gibberellic acid (GA3) (control, 100, 200 and 300 ppm) were used. The doses of SA and GA3 were applied by spraying to plants before flowering stage. In the study plant height, branch number, capsule number, number of seeds per capsule, capsule diameter, flowering days number, maturity days number, seed yield, 1000 seed weight, husk ratio, inner ratio, oil ratio, protein ratio and oil yield were investigated. According to the results of this research, differences between cultivars and growth regulators as well as cultivar x growth regulators and growth regulators x doses interactions were significant in terms of seed yield and oil rate. Dincer cultivar has showed the highest seed yield (120,496 kg/da) with SA application, Balcı cultivar has showed the lowest seed yield (55,111 kg/da) with GA3 application. Although oil rate were not change with SA application, oil rate increased from 34,3% to 41,2% with application of 300 ppm GA3
Farklı Yüksekliklerden Toplanan Pembe Ladenin (Cistus creticus L.) Uçucu Yağ Oranı ve Kimyasal Bileşenlerinin Belirlenmesi
Get PDFBu araştırma Tekirdağ ilinin Kumbağ, Yeniköy ve Uçmakdere mevkilerinde geniş bir alanda yayılış gösteren pembe laden bitkisinin (Cistus creticus L.) uçucu yağ oranı ve bu yağın kimyasal bileşimini belirlemek amacıyla 2019 yılında yürütülmüştür. Bu amaçla farklı yüksekliklerden toplanan (0, 50, 100 ve 150 m) pembe laden bitkisinin yaprakları oda sıcaklığında kurutulmuş ve numunelerden Clevenger cihazı yardımıyla uçucu yağ tayini yapılmıştır. Uçucu yağın kimyasal bileşimi GC/MS cihazı ile incelenmiştir. Araştırma sonucuna göre, uçucu yağ bileşiminin %73,03'ünü (? %1) temsil eden 13 bileşen tanımlanmış ve yağın ana bileşenlerini kamfen (%19,45) ve ?-pinen (%13,85) oluşturmuştur. Ülkemizin birçok bölgesinde yayılış gösteren Cistus türlerinin üretimi yapılıp, uçucu yağlarının aktif bileşen miktarı ve içeriği belirlenebilirse gıda katkı maddelerine, sentetik antioksidanlara ve ilaç etken maddelerine doğal bir alternatif ürün olabilecekledir
THE GENETIC DIVERSITY OF SAFFLOWER (Carthamus tinctorius L.) GENOTYPES DEVELOPED BY HYBRIDIZATION USING SSR MARKERS
Get PDFSafflower is an annual oilseed crop which has healthy edible oil containing high amount of unsaturated fatty acids in the world. In this study, we investigated safflower registered cultivars of Turkey (4), genotypes retrieved from USDA (10) and their hybrids (45) for genetic variation using 10 simple sequence repeat (SSR) loci. Genetic diversity calculated registered cultivars, genotypes and hybrids were as follows: mean number of alleles (4.67), expected heterozygosity (0.680), average effective number of alleles (3.172), and polymorphism information content (0.664). The dendrogram analysis revealed at least four possible major clusters in the parents and hybrids. High level of genetic diversity explained between the populations and Fst calculate (0.593) suggested that the clusters were differentiated to each other. Registered safflower cultivars of Turkey were distributed across all four clusters and the accessions from USA were defined in most of the clusters. The dendrogram based method analysis revealed two major clusters which corresponded to spiny and spineless safflower genotypes. It was suggested that the studied 6 SSR markers could be utilized for safflower breeding studies based on molecular analysis © 2022, Genetika.All Rights Reserved.The authors thank Dr. Raziye IŞIK and Dr. Nihan ŞAHİN for their contributions in laboratory techniques. The authors declare that they have no conflicts of interes
EFFECT OF SOWING DATES ON SEED YIELD, YIELD TRAITS AND OIL CONTENT OF SAFFLOWER IN NORTHWEST TURKEY
No full textThe aim of this research was to evaluate the effect of different sowing dates on some yield and quality traits of safflower varieties. The field experiments of this study were carried out in spring season of 2017 and 2018 under ecological conditions of the Suleymanpasa and Malkara districts of Tekirdag. Plots of the two safflower varieties (Dincer 5-18-1 and Balci) and four sowing dates (20 February, 5 March, 20 March and 5 April) were arranged in a Randomized Complete Block Design with three replications in both locations. Results showed that variation in sowing dates had a significant effect on seed yield, oil content and oil yield of safflower variety. While the highest seed yield was obtained from the 1st (20 February) sowing date (1442.67 kg ha-1), the lowest seed yield was obtained from the 4th (5 April) sowing date (961.13 kg ha-1). The seed yield was significantly affected by the sowing dates and it seriously decreased as sowing date was delayed (481 kg ha-1 higher in 20 February compared to 5 April over the average of two years). As a result, because of sowing dates is a crucial factor for seed and oil yield of safflower, sowing should be done as early as possible in the spring. © 2023, Society of Field Crops Science. All rights reserved
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
- …
