37 research outputs found

    Phenology, Morphology, Yield and Quality Characteristics of Mustard Species (Brassica spp.) Suitable for Energy Sector

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    <p>There is a need to identify new renewable, sustainable and clean energy sources in the world. This study was conducted to determine the genotypes of different Brassica species suitable for the energy sector. A total of 21 genotypes, consisting of 19 lines (B. juncea, B. nigra, Sinapis alba and B. rapa ssp. oleifera) and two standards (ISCI-99 and Excalibur used as control) were evaluated in the study. The research was carried out during 2019-20 and 2020-21 growing seasons at Tokat, Turkey. The parameters related to yield and yield components (days to emergence, days to rosette formation, winter survival percentage, days to 50% flowering, days to 50% capsule formation, days to maturation, plant height, number of lateral branches per plant, number of capsules per plant, number of seeds per capsule, thousand seed weight, seed yield), crude oil percentage, crude oil yield, fatty acid components, biodiesel production and their technical properties for appropriateness to bioenergy production were investigated. The results showed that the yield, yield components, oil content, fatty acid components and biodiesel technical properties of lines were significantly dissimilar. Seed yields varied between 37 and 1195 kg ha(-)(1) and the maximum seed yield was obtained in the second year of the study from the line 5. Oleic acid (C18:1; 17.12-26.8%), linoleic acid (C18:2; 13.15-24.60%), and erucic acid (C22:1; 12.13-42.76%) were the predominant fatty acids of the lines. The excess of monounsaturated fatty acids in the oils indicated that the fatty acid components are suitable for biodiesel production. Water content, cold filter plugging point, ester percentage, flash point, acid number, iodine number, and glyceride values of oils in all lines are within acceptable limits for biodiesel production according to TS EN 14214 standards. The yield and quality data of the species revealed that B. juncea and B. rapa lines have higher potential as a raw material source for biodiesel production.</p&gt

    Effects of Heterosis on Agronomically Important Traits of Oriental Tobacco (Nicotiana tabacum L.) Hybrids

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    Bu araştırma, farklı oriental tütün tipleri arasındaki melezlerin heterosis üzerine etkilerini belirlemek için Türkiye’de Tokat ilinde yürütülmüştür. Hibrit hatlar, Xanthi-2A, Nail, Gümüşhacıköy, Taşova, Katerini, Canik ve Erbaa genotiplerinden yarım diallel melezleme ile 2012 yılında elde edilmiştir. Çalışma 2013-2014 yılları tütün vejatasyon sürecinde Kazova/ Tokat şartlarında 7 ebeveyn (Р1 ve Р2) ve onların 21 F1 populasyonu kullanılarak yürütülmüştür. Araştırmada, bitki boyu, yaprak sayısı, yaprak eni, yaprak boyu, yaprak verimi, nikotin ve şeker oranları incelenmiştir. Çalışma sonucunda melezler kuru yaprak veriminde ortalama %28,4 ve bitki boyunda ortalama %4,4 heterosis etkisi göstermiştir. Hibritler ortalama olarak ebeveynlere göre kuru yaprakta %16,6 daha az şeker oranına sahip olurken %10 daha fazla nikotin içeriğine sahip olmuşlardır

    Reporting evidence on the environmental and health impacts of climate change on Indigenous Peoples of Atlantic Canada: a systematic review

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    While evidence of Indigenous Peoples’ climate knowledge and adaptation practices is readily available in Canada, regional variations are poorly understood, and proper representation and recognition in academic and planning contexts is scarce. Much less still is known about the health and environmental impacts of climate change on these communities. This review sought to report and assess the evidence of such impacts on Indigenous Peoples in Atlantic Canada over the past two decades. Current published studies focused on Indigenous Peoples’ knowledge and perceptions and highlight government policy for adaptation measurements. We systematically searched publications between January 2002 and March 2022 from the Web of Science, PubMed, Google Scholar, and Science Direct databases, screening for (1) environmental and (2) health impacts of climate change on Indigenous Peoples. Fifty-six articles were selected and thoroughly reviewed using the GRADE approach to assess the quality of the evidence. The quality of evidence ranged from low to moderate, and the evidentiary foundation for links between climate change and health effects was weak. We thus find an opportunity for future research to focus on climate-related effects on the health and lands of Indigenous Peoples within Atlantic Canada, especially concerning impacts on mental health

    Assessing the potential impacts of climate change on current coastal ecosystems—A Canadian case study

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    Understanding how climate change affects coastal ecosystems is one of the most important elements in determining vulnerability and resilience for long-term ecosystem management in the face of the increasing risk of coastal hazards (e.g., sea level rise, coastal flooding, and storm surge). This research attempts to undertake a study on the ecosystem–climate nexus in the Canadian province of Prince Edward Island (PEI). Cloud-based remote sensing techniques with Google Earth Engine (GGE) are utilized to identify ecosystem changes over time. In addition, the effects of coastal flooding and storm surge ecosystems under different climate scenarios are examined. The results suggest a reduction in the forest (3%), open water or marsh component (9%), salt water (5%), no open water or marsh component (3%), and salt or brackish marsh (17%) ecosystems from 2013 to 2022. Dune and beach exhibit a non-uniform distribution across the period because of variations in natural processes, with an upward trend ranging from 0% to 11%. Approximately 257 km2 (9.4%) of PEI’s ecosystems would be affected by extreme coastal flooding (scenario 4), compared to 142 km2 (5.2%), 155 km2 (5.7%), and 191 km2 (7%) in scenarios 1, 2, and 3, respectively. Under a 4 m storm surge scenario, around 223 km2 (8.2%) of PEI’s ecosystems would be flooded, compared to 61 km2 (2.2%), 113 km2 (4.1%), and 168 km2 (6.1%) under 1 m, 2 m, and 3 m scenarios, respectively. The findings from this research would enable policymakers to take necessary actions to sustain ecosystem services in PEI while confronting the impacts of climate change

    Determining the Performance of Some Soybean Genotypes in Middle Black Sea Transitional Zone

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    This research was carried out in 2017 and 2018 to determine the agronomic and chemical quality characteristics of 18 soybean genotypes including seven advanced lines and eleven cultivars under Tokat-Kazova conditions. The feasibility of soybean production in the region has been determined to create a database that may contribute to the oilseed deficit in the future. The phenological (germination, first flowering and physiological maturity) and morphological characteristics (plant height, number of side branches, first pod height, number of pods per plant, number of grains per pod, 1000-seed weight, seed yield, oil ratio, oil yield, protein ratio and yield) were examined in the study. All properties except number of grains per pod were significantly (p<0.01 and p<0.05) different between genotypes. The seed yield varied between 1.82 and 3.00 t ha-1, oil ratio was between 19.73 and 25.20% and protein ratio was between 30.39 and 43.44%. The results of the study revealed that genotypes of 1, 2, 3 and 9 for the seed yield, 1, 7 and 8 for the oil yield and 1, 2 and 9 for the protein yield can be promising under Tokat-Kazova conditions. However, more efficient cultivars are needed due to the insufficient performances of the genotypes investigated

    Molecular Approaches on Biocontrol of Postharvest Fungal Plant Pathogens: Antagonistic Yeast Model

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    Postharvest decays limit storage life and cause significant losses on fruit and vegetables. For a long time, synthetic fungicides have been used successfully for controlling the postharvest pathogens. In recent years, due to their risks, studies on alternatives to the chemical fungicides on postharvest rots control have garnered high attention. In this concern, the uses of biological and physical methods have gained great importance. Yeasts are single-celled eukaryotic microorganisms that belong to Kingdom Fungi. As the epiphytic yeasts always exist on fruit and vegetable surfaces and compete with other microorganisms, they take attention on biological control. The management of postharvest pathogens with antagonistic yeasts, including pre- and postharvest uses, has gained great importance in the last 30 years. As a result of these studies some successful antagonist yeasts were found, and their formulations were carried out and commercialized. The use of antagonistic yeasts may differ with target pathogens and host; hence they can be applied at pre- or postharvest stages. After the 1990s, molecular methods have pioneered in providing very important developments in the biological control of fungi, as well as in all areas of plant pathology. To find a good antagonistic microorganism and deliver to conventional use is not easy and short process. These processes include isolation, identification, biology, ecology, physiology, biological efficacy-testing, commercial product development, and registration of yeasts for agricultural applications. Including all the steps, from the initial discovery to registration and product development, needs the work of specialist scientists from different disciplines together, including new technologies. In researches, genome sequencing is now commonly used for both identification and classification of pathogen and biocontrol agents for the control of the plant diseases. The interactions of the antagonist microorganisms with the pathogen and the host have been highly detectable and understandable by using omics technologies. This review supplies a summary of the usage of the molecular instruments for screening and identification of the antagonistic yeasts and comprehension of their mechanisms of action on postharvest biological control of fruit and vegetables. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023

    Meta-Thematic Analysis of Studies on Micro Teaching Techniques for Prospective Teachers

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    The aim of this research is to examine the qualitative studies, which include participants' views on the microteaching technique for prospective teachers, using the meta -thematic analysis process. In this research, in the context of studies on micro teaching technique; studies reached by using the keywords prospective teachers and micro teaching, prospective teachers and micro teaching technique, prospective teachers and micro teaching method, prospective teachers and micro teaching practices, studies written only in Turkish, master's thesis, doctoral thesis in the country and articles published in peer -reviewed academic journals, studies published between 1992-2020, studies conducted in relation to prospective teachers, studies using qualitative research methods and participant views, data were collected within the limits of the keywords and databases used during the literature review. In this study, meta -thematic analysis one of the qualitative research methods, was used. In the findings of the research, the effect of the studies on micro teaching technique on the cognitive dimension of prospective teachers, the professional development of prospective teachers, the problems faced by prospective teachers and their suggestions in the studies on micro teaching technique were examined.Dicle University [EBE.22.001]This article is derived from the doctoral thesis completed by the first author in 2023 at Dicle University Institute of Educational Sciences and financial supported by the Dicle University Scientific Research Projects Coordinatorship with the project numbered EBE.22.001
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