خيارات البحث
النتائج 2061 - 2070 من 5,301
Molecular Survey of the Toxoplasma gondii and Neospora caninum in brain tissue of aborted fetuses of Morkaraman sheep in Muş, Türkiye النص الكامل
2023
Davut Koca | Burçak Aslan Çelik | Özgür Yaşar Çelik | Adnan Ayan | Özlem Orunç Kılınç | Ali Osman Turgut | Özge Oktay Ayan
Toxoplasma gondii and Neospora caninum are obligate intracellular protozoan parasites that can affect different warm-blooded species worldwide. In this study, it was aimed to detect T. gondii and N. caninum using PCR method in brain tissues of aborted sheep fetuses. Brain specimens were collected from 50 Morkaraman sheep fetuses that had undergone abortion at various stages of pregnancy, within the lambing seasons of 2023 in Muş. Approximately 1 cm³ of brain tissue from the right cerebral hemisphere was excised and subsequently frozen at -20°C for DNA extraction. DNA extraction and PCR amplification were then performed. As a result of this study, 11 (22%) of 50 brain tissues were positive. All brain samples examined in this study were negative for Neospora caninum. Based on the results of this study, it is possible to say that T. gondii is an important abortion agent in sheep in this region. Although N. caninum was not detected in this study, larger scale studies are recommended. Moreover, this study provides important information to breeders and veterinarians in the field in the evaluation and management of abortion.
اظهر المزيد [+] اقل [-]Investigation of the Effect of Pumpkin (Cucurbita pepo L.) Seed Oil on Pentylenetetrazole-induced Neuronal Damage in HT-22 Cell Line النص الكامل
2023
Ahmet Taskiran | Tuğba Yıldız Asdemir
Recent studies have shown the positive effects of Cucurbita pepo L. (pumpkin) seed oil (PSO) in different disease models. However, the effect of PSO on neurological diseases has not been clarified yet. Therefore, this study aims to elucidate the effects of BBS on pentylenetetrazole (PTZ)-induced neuronal damage and the possible roles of oxidative and nitrosative stress in this effect in vitro. The HT-22 hippocampal neuronal cell line was used in the study. Cell survival after PTZ-induced neuronal damage was evaluated with the XTT test in the groups. While the effects of BBS on total antioxidant status (TAS) and total oxidant status (TOS) after PTZ were measured with colorimetric commercial kits, its effects on neuronal nitric oxide synthase (nNOS) and nitric oxide (NO) levels were also determined by ELISA kits. In light of the data obtained, it was found that pre-treatment with PSO prevented the decrease in cell survival after exposure to PTZ. In addition, it has been found that PSO normalizes the increase in TOS, nNOS, and NO in neuronal cells after PTZ. As a result, it was determined that the treatment of neuronal cells with PSO prevented neuronal damage caused by PTZ and showed neuroprotective properties. It is thought that PSO may achieve these effects through oxidative and nitrosative systems. Enrichment of a daily diet with PSO might be beneficial in reducing the risks of neurological diseases.
اظهر المزيد [+] اقل [-]Leblebi Tozu İlaveli Glütensiz Bisküvi Üretimi: TOPSIS Uygulaması النص الكامل
2023
Ali Cingöz | Mehmet Güldane
Geleneksel atıştırmalıklarımızdan biri olan leblebi yüksek besleyicilik özellikleri ile ön plana çıkmaktadır. Leblebi üretiminde yan ürün olarak kırık leblebi ve leblebi tozu açığa çıkmaktadır. Ticari değeri düşük olan bu yan ürünlerin alternatif gıdalarda kullanılması katma değerini yükseltecektir. Bu çalışmada, leblebi tozu/unu beş farklı oranda (%0, 10, 20, 30 ve 50) glütensiz un ile ikame edilmiş ve elde edilen karışımlardan glütensiz bisküvi üretimi gerçekleştirilmiştir. Üretilen bisküvilerin fiziksel (çap, yükseklik, yayılma oranı, renk vb), kimyasal (protein, yağ, kül vb), fonksiyonel (toplam fenolik madde, toplam antioksidan kapasite), tekstürel ve duyusal özellikleri tespit edilmiştir. Ayrıca örneklerin duyusal analiz sonuçları çoklu karar verme yöntemi (TOPSIS) ile de değerlendirilmiştir. Yapılan analizler sonucunda glütensiz una leblebi tozu/unu ilave edilmesi örneklerin protein, kül, toplam fenolik madde ve antioksidan kapasite değerlerini yükseltmiştir. Bisküvi örneklerinin kabarma dereceleri düşmüş, yayılma dereceleri ise artış göstermiştir. Ayrıca leblebi tozu/unu ilavesi örnekleri daha sert bir yapıya dönüştürmüş, %30 ve üzerinde leblebi tozu/unu ilave edilen örneklerin fiziksel özelliklerinin olumsuz etkilendiği belirlenmiştir. Yapılan duyusal değerlendirme de %20 leblebi tozu/unu ilaveli örneklerin kontrol örneğine en yakın genel beğeni puanı aldığı, çoklu karar verme yöntemi (TOPSIS) ile değerlendirilen duyusal analiz verilerinin de benzer sonuçlar verdiği tespit edilmiştir. Bu çalışma protein ve fonksiyonel bileşenlerce zengin glütensiz bisküvi üretiminde leblebi tozu/ununun alternatif ürün olarak kullanılabileceği göstermektedir.
اظهر المزيد [+] اقل [-]Transmission of Flower Traits and Fertility in Black Rose x Hybrid Tea Rose Cross Combination النص الكامل
2023
Tuğba Kılıç | Soner Kazaz
Breeding studies of scented cut roses have gained significance recently. The Black rose, a naturalized old garden rose in Türkiye, is a valuable genetic resource for breeding programs due to its pleasant scent. This study investigated the fertility of the Black rose (Rosa odorata cv. Louis XIV, Halfeti rose) as a seed parent and its ability to transmit flower traits to offspring. Four commercial cut rose varieties with known pollen germination rates were used as pollen parents. Each combination underwent at least 33 pollinations, and the fruit set rate, the average seed number per fruit, and the seed germination rate were examined. Both parents and one-year-old F1 progeny were evaluated for petal number, scent, and flower color traits during two flowering periods. Cross-pollination resulted in fruit set rates ranging from 70.21% to 100.0%, average seed numbers per fruit ranging from 5.0 to 10.0, and seed germination rates ranging from 4.42% to 21.69%. Morphological characterization revealed that 5.05% of the progeny exhibited moderate to intense scent, 42.42% had sour cherry-colored petals, and petal numbers ranged from 9 to 54. Considering the overall efficiency of rose breeding programs, the findings demonstrate the promising fertility of the Black rose and its relative success in forming efficient combinations with hybrid tea roses. However, it also suggests that the Black rose is not as successful in transmitting the scent to its offspring as in transmitting the flower color.
اظهر المزيد [+] اقل [-]The Preliminary Study on the Biology of An Invasive Species, Halyomorpha halys (Hemiptera: Pentatomidae) in Northwest Türkiye النص الكامل
2023
İsmail Oğuz Özdemir | Furkan Doğan | Celal Tunçer
The Brown marmorated stink bug (BMSB) [Halyomorpha halys (Hemiptera: Pentatomidae)] is a polyphagous pest causing significant damage to approximately 300 crops, such as nuts, vegetables, and ornamentals. In 2017, the BMSB was discovered for the first time in Türkiye. There is currently no published data available on the biology of the pest in Türkiye. This preliminary study was carried out in Sakarya province, where the BMSB has observed a low population since 2021. In this study, some biological parameters such as voltinism, mortality rates, egg hatching rates, and egg-adult developmental times of the 1st and 2nd generations of the insect populations were determined. The study was carried out under semi-field conditions and laboratory. Considering the BMSB's minimum temperature threshold, which has yet to be determined in Turkey, the accumulation of degree days was calculated using the references to four possible thresholds (DD12, 12.5, 13, 13.5) and was determined to be between 536.91 - 608.69 DD. The average egg-adult developmental time was 47.85 days for the 1st generation at naturally fluctuating temperatures and 47.13 days for the 2nd generation under laboratory conditions at 25 ֯C. The hatching rate of egg masses was determined to 90.63% in the 1st generation and 57.75% in the 2nd generation. Total mortality in the first generation was 22.97% and 90.24% in the second generation. It was revealed that the insect could produce two generations in Türkiye, but the number of egg-producing adults and eggs laid in the second generation was significantly lower than that in the first. This preliminary study was carried out with a limited number of samples due to the initial infesting in the region and, therefore more comprehensive research is needed to reveal the the biology of BMSB in the country.
اظهر المزيد [+] اقل [-]Development of Homozygous Lines by In Vivo Doubled Haploid Technique in Hybrid Maize Breeding النص الكامل
2023
İbrahim Cerit | Gönül Cömertpay | Bülent Çakır | Rüştü Hatipoğlu | Hakan Özkan
The maize breeding programs focuses on the development of homozygous parental lines for hybrid breeding to obtain heterosis. The Improvement of homozygous lines in a effective time is crucial for hybrid maize breeding. Objectives of this research were to obtain homozygous lines of maize in a short time by using of in-vivo maternal haploid (DH) technique and characterizing them morphologically. The experiments were carried out at the Eastern Mediterranean Agricultural Research Institute(EMARI). Inducers, RWS, RWK-76 and their hybrid RWS X RWK-76 were used as male parent. As female parent, 56 F2 segregated material obtained by selfing of 66 F1 hybrids developed in maize breeding program of Eastern Mediterranean Agricultural Research Institute (EMARI) and 2 F2 segregated material selected from the open pollinated plants of 9 commercial maize variety. As a result of the experiment, 29 doubled haploid lines (DH) were developed. In the developed DH lines, days to tasseling, plant height, height of first ear , ear length, ear diameter, number of kernel per ear and thousand kernel weight varied as 57-78 days, 151-248 cm, 43-112 cm, 11.20-24.50 cm, 24-45 mm, 224-537 kernels/ear, and 180-320 g, respectively. In conclusion, in-vivo maternal DH technique is a highly effective method for obtaining homozygous lines
اظهر المزيد [+] اقل [-]Foliar Application of Different Levels of Zinc and Boron on the Growth and Yield of Mungbean (Vigna radiate L.) النص الكامل
2023
Mohammad Selim Reza Selim | Sourav Adhikary | Monjurul Alam Mondal | Kawsar Alam Nadim | Babul Akter
An experiment was conducted during Kharif-1 of 2022 at Bangladesh Institute of Nuclear Agriculture (BINA), Substation, Satkhira to know the effect of foliar application of micronutrients (zinc and boron) on the growth and yield of mungbean. There were three levels of zinc (Zn) (0.2%, 0.4%, 0.6%) and boron (B) (0.2%, 0.4%, 0.6%) along with a blanket dose of urea (35 kg ha-1, triple super phosphate (TSP) (80 kg ha-1), murite of potash (MoP) (40 kg ha-1) and Sulphur (60 kg ha-1). The growth and yield of mungbean was significantly affected by foliar application of different levels of Zn and B. Results revealed that foliar application of Zn at the rate of 0.6% and at the rate of B 0.6% along with recommended dose at 45 days after sowing increases the branches/plant, fresh weight (g), dry weight (g), chlorophyll content, flower/plant, pod/plant, seed/pod thereby increase seed yield. Therefore, the foliar spray of 0.6% Zn significantly increased and influenced 1000 seed weight (g), decreased days to flowering, increased number of seed/pod and yield ton/ha along with blanket dose of Urea, TSP, MoP, gypsum might be considered as suitable dose for mungbean production in southern region of Bangladesh.
اظهر المزيد [+] اقل [-]Bioactive Composition, Antioxidant, And Cytotoxic Activities of Rheum Ribes Extracts النص الكامل
2023
Sema Mısır | Mahmut Özbek | Ceylan Hepokur
The aim of the study is to evaluate the ethanol extract of Rheum ribes root (RTE), as well as the root and young shoots (RYSE), for its chemical composition, antioxidant properties and cytotoxic effects. Total polyphenols (TPC), total flavonoid (TFC), radical scavenging activity (DPPH), the ferric reducing antioxidant power (FRAP) of Rheum ribes extracts were determined using colorimetric methods. Mineral contents and vitamin values of samples were determined by ICP-MS and HPLC, respectively. The cytotoxic effect of Rheum ribes extracts was determined on different cells using XTT assay. The cytotoxic effects of RTE and RYSE on cancer cells were evaluated with regard to apoptosis. According to results, mineral contents, vitamine A and C values were very high in both samples. Ethanolic extracts of Rheum ribes young shoot exhibited a selective cytotoxic effect on all cancer cells compared to WI-38 cells, and the IC50 values of the extract in the cancer cells between 26.10 to 54.81 μg/mL. Ethanolic extracts of RTE and RYSE induced apoptosis on MCF-7 cells. The ethanolic extracts of Rheum ribes has effective cytotoxic and antioxidant activity. More research is needed to determine the cytotoxic effect mechanisms on cancer cells.
اظهر المزيد [+] اقل [-]The Impact of Sowing Time and Biostimulant Application on Seed Production in Italian Ryegrass النص الكامل
2023
Nurbaki Akdağ | Süleyman Avcı
This research was performed to determine the effects of different sowing times (ST1, ST2, and ST3) and biostimulant (Pi-NFS) doses (0, 100, 250, 500 ml da-1) on seed yield components of Italian ryegrass ryegrass (Lolium multiflorum L.) in the continental condition of Eskişehir, Turkey. The results indicated that the main factors significantly affected the seed yield components except for the effect of sowing time on plant height, however, the interaction effect of these factors was significant only on the number of the reproductive tillers and seed yield. There was no significant difference between the ST1 and ST2 in terms of the number of the reproductive tillers, thousand seed weight, and seed yield. Likewise, the values of these components did not differ significantly in the doses of 250 and 500 ml da-1. The highest seed yield was derived from the dose of 500 ml da-1 at ST2 and the values obtained from the doses of 250 and 500 ml da-1 at the ST1 were in the high seed yield group. It was concluded that early sowing time and the doses of 250 to 500 ml da-1 biostimulant application resulted in high seed yield in Italian grass. On the other hand, the dose of 500 ml was more effective in case of delayed sowing time like ST2.
اظهر المزيد [+] اقل [-]Van İlinin 2000-2021 Yılları Arasında Su Ürünleri Üretiminin İncelenmesi النص الكامل
2023
Hatice Tekoğul
Türkiye; birbirinden farklı ekolojik özelliklere sahip olup akarsu ve göller bakımından zengin bir ülkedir. Bazı akarsularımız da yer altına sızarak veya sıcaklığın etkisiyle buharlaşarak kaybolur. En büyük gölümüz Doğu Anadolu'da yer alan sodalı Van Gölüdür. 2021 yılında Türkiye’de su ürünleri üretim miktarı yaklaşık 800 bin ton olup bu miktarın %59’u yetiştiricilik yolu ile elde edilirken %41’i avcılık yolu ile elde edilmektedir. Avcılığın %10’u iç sulardan karşılanırken, yetiştiriciliğin yaklaşık %29’unu oluşturmaktadır. Yapılan bu çalışmada, Van ilinin son 22 yıllık (2000-2021) su ürünleri üretim miktarının elde edilmesi hedeflenmektedir. Bu amaçla Türkiye istatistik Kurumu (TUİK, 2000-2021) veriler yardımı altında Van ilinde yapılan avcılık ve yetiştiricilik yoluyla elde edilen türlerin trend analizi ile 2050 yılına kadar üretim miktarının tahmin edilmesi amaçlanmıştır. Van ilinin 2000-2021 yılları arasında avcılık yoluyla en çok avlanan iç su balıkları türleri sırasıyla; İnci Kefali (Chalcalburnus tarichi), Sazan (Cyprinus carpio), Siraz (Capoeta Pestai), Alabalık (Salmo spp.). Yetiştiriciliği yapılan tür ise sadece Alabalık’tır. Sonuç olarak, Van ilinde avcılık yoluyla elde edilen tatlı su balıkları üretiminde yıllara bağlı olarak genel bir azalmanın varlığı gözlenmektedir. Hatta bu şartlar devam ederse Siraz balığının 2022 yılında üretim verilerinde, Sazan balığının ise 2024 yılında üretiminin sona ericeği tahmin edilmiştir. Bunun yanında yetiştiricilik yoluyla üretilen tek tür olan Alabalık üretiminin artacağı bulunmuştur.
اظهر المزيد [+] اقل [-]