The aim of this study was to determine the effect of different doses and combinations of benzylaminopurine (BAP) and Putrescine elicitor on some plant characteristics of summer snowflake (Leucojum aestivum L.). The experiment was conducted for two years between 2017-2019 in the greenhouse of Uşak University, Faculty of Agriculture and Natural Sciences. Bulbs with ~7 cm circumference and ~9 g weight were used as a material of this study, and was constructed with randomized blocks design with 3 replications. The bulbs were treated for 24 hours before planting with 5, 10 and 15 mg/l BAP; 5, 10 and 15 mg/l Putrescine elicitor in different combinations (16 different combinations). Thereafter, all bulbs were planted in crates. In the first year, only plant height, number of leaves per bulb were recorded and at the end of the second year, the plant height, number of leaves per bulb, number of leaves per daughter bulb, number of bulbs, leaf weight, root length and weight, bulb weight, unit bulb weight, alkaloid contents were measured after removal of bulbs from the soil. According to the results, plant height ranged 19,3-30,0 cm; the number of leaves ranged 6.5 to 12.6, and the number of bulbs ranged 0.9 to 4.6. Root weight was determined between 13.4-47.1 g/parcel, fresh leaf weight ranged 12.4-49.2 g/parcel, and one bulb weight was between 3.5-14.6 g. It was determined that the bulb plant was influenced by different treatments. The maximum growth was noted with 5 mg/l Putrescine elicitor treatment that increased plant height, number of leaves per bulb each year and number of bulbs.

During the growing seasons between 2009 and 2010, totally 213 shoot and leaf samples were collected from the vineyards in Manisa, Denizli, Nevşehir, Elazığ, İzmir, Ankara, Çanakkale, Tekirdağ, Edirne and Kırklareli, which are commercially important viticulture production areas of Turkey. All grapevine samples were serologically investigated for the presence of Grapevine leafroll-associated viruses (GLRaVs) using GLRaV-1, GLRaV-2, GLRaV-3, GLRaV 4-9, GLRaV-6 and GLRaV-7 DAS-ELISA kits. In 143 of total, (67.14%) single or multiple infections were detected. GLRaV4-9, -7, -3, -1, -2 and -6 were detected as 53.52%, 36.15%, 34.74%, 32. 86%, 32.39% and 3.28%, respectively in the surveyed area. Eastern Anatolia Region had the highest infection rate (100%), followed by Marmara, Aegean, and Central Anatolia Region (69.74%, 75%, 62% and 26.47%, respectively). While the highest infection rates were obtained in Marmara Region for GLRaV-1, -2 and -3 as 43.42%, 44.74% and 50% respectively, GLRaV4-9 found as 100% in Eastern Anatolia Region. The highest infection rate was detected in Marmara Region for GLRaV-6 as 3.95%. The most common multiple infection was determined as GLRaV-1, -2, -3, 4-9 and -7 with the rate of 36.17%.

Çalışmada ülkemizde en çok yetiştirilen sebzeler arasında yer alan domates bitkisi araştırmanın konusu olarak seçilmiştir. Domates üretiminde Çukurova yöresi son yıllarda giderek artan bir üretim potansiyeline sahiptir. Dolayısıyla çalışma alanı olarak Çukurova yöresi seçilmiştir. Çalışmada araştırma alanındaki illere ait uzun yıllık sıcaklık ve yağış değerleri çalışmanın materyalini oluşturmuştur. Çalışmada Büyüme Derece-Gün (BDG) yöntemi kullanılmıştır. Domates bitkisinin gelişim evreleri için denge sıcaklıkları seçilmiş, gelişim dönemlerindeki denge sıcaklık değerlerine göre BDG değerleri hesaplanmıştır. Hesaplanan bu değerler irdelenerek araştırma alanındaki illerin yetiştiricilik açısından uygunluğu belirlenmeye çalışılmıştır. Çalışmadan elde edilen veriler doğrultusunda Mersin ilinin ön plana çıktığı kanısına varılmıştır. Bitkisel üretim alanlarının önceden belirlenmesi ve bu alanlara göre üretim yapılması verimi olumlu yönde etkileyecektir. Dolayısıyla üreticinin gelirinin artması ülke ekonomisine de olumlu yönde katkı sağlayacaktır. Ayrıca, domates bitkisinin gelişim evreleri için seçilen temel sıcaklık değerlerine göre çoklu doğrusal olmayan regresyon denklemleri geliştirilmiştir. Sonuç olarak, geliştirilen bu denklemler kullanılarak domates bitkisinin BDG değerlerini etkileyen değişkenler sayesinde domatesin gelişimi hakkında önceden bilgi sahibi olunacağı kanısına varılmıştır.

Climate change increases the odds of worsening drought in many parts of the World. Climate projections for the Mediterranean basin in which Turkey is located expresses alarming conclusions about severe droughts. Droughts are expected to prevail in different severities and periods throughout Turkey. Iğdır plain, which lies in eastern part of Turkey is convenient for cultivation of many agricultural products because of its fertile soils and micro-climatic properties. In this study, drought analysis were carried out for Iğdır by using Standardized Precipitation Index (SPI), Reconnaissance Drought Index (RDI) and Streamflow Drought Index (SDI). The data (precipitation and flow) were obtained in monthly intervals from Turkish institutions, namely General Directorate of Meteorology and General Directorate of State Hydraulic Works. Study was aimed to examine the integrated effect of low precipitations and high temperatures on hydrological and meteorological drought. Annual SPI results show that four severe and three moderate drought events whereas RDI detected four severe and four moderate drought events for the study period (47 years, 1971-2018). SPI index detected severe category droughts in the water years of 1980, 1989 and 1997. RDI detected severe category droughts in the mentioned years together with one more event in 2000. SDI identified 2002 as extreme drought year, and identified 1982, 1984, 1986 and 2002 as moderate drought years. The output of the study is aimed to serve for better understanding of droughts in the Igdir Plain.

In this study, the effect of supplementing amino acid-precursor of nitric oxide (NO) L-arginine were examined on sperm motility of rainbow trout Oncorhynchus mykiss. Different concentrations [0 mM (Control), 1 mM, 2 mM, 4 mM and 8 mM] of L-arginine were used in the study. To assess the effects on percentage of motile sperm and longevity, L-arginine was added to activation medium containing NaCl (52 mM). The higher L-arginine concentration (4mM) has promoting-effect on sperm motility. The treatments containing L-arginine caused significant effect on percentage of motile sperm and longevity. Overall, the findings of the present study indicated that supplementation of L-arginine may have improving effects on sperm motility of rainbow trout.

The aim of this study was to compare estimation methods: least squares method (LS), ridge regression (RR), Principal component regression (PCR) to estimate the parameters of multiple regression model in situations when the underlying assumptions of least squares estimation are untenable because of multicollinearity. For this aim, the effect of some body measurements on body weights (height at withers and rumps, body length, chest width, chest girth and chest depth, front, middle and hind rump width) obtained from totally 85 Karayaka lambs at weaning period raised at Research Farm of Ondokuz Mayis University was examined. Mean square error, R2 value and significance of parameters were used to evaluate estimator performance. The multicollinearity, between front and middle rump width which were used to estimate live weight, was eliminated by using RR and PCR. Although research findings showed that RR method had the smallest MSE and the highest R2 value, the estimates of PCR were determined to be more consistent when the importance tests of parameters were taken into account. The results showed that principal component regression approach should be used to estimate the live weight of Karayaka lambs at weaning period.

Dried products are widely used from the past because of their long shelf life, rich nutrient content and availability. Solar or shade drying methods have become the most widely used drying technique from past to date, due to no equipment requirement, cost and simplicity. However, this drying method has some disadvantages such as long drying time, contamination risk and requirement of large area and heavy labor. In this review, various drying methods applied in food are summarized. Then, solar energy assisted drying methods were examined in detail. Finally, solar energy-assisted drying methods involving energy storage are examined. Solar energy assisted drying is a very advantageous technique for economical production. The most important advantages of this technique are that the system can be designed in many different ways in order to provide the desired characteristics. In addition, the availability of various energy storage units contributes to the availability of the system.

Genetic diversity assessment is the principle component for conservation and characterization of germplasm. Genetic diversity study of Afghan bread wheat genotypes is a first step to identify and to select high performance genotypes and distribute to wheat breeding programs. The main objective of this study is to investigate of genetic diversity in 35 Afghan bread wheat genotypes by using Simple Sequence Repeat (SSR) and Amplified Fragment Length Polymorphism (AFLP) markers. DNA extraction according to Cetyl Trimethyl Ammonium Bromide (CTAB) method was conducted and the total genomic DNA was isolated from each variety. Sixty-four SSR primer markers were used and eighteen EcoRI+(N)/MseI+(N) primer combinations with their primer sequences were used for selective polymerase chain reaction (PCR) amplification. Every SSR and AFLP fragment was scored as present (1) or absent (0) within all genotypes under study. Marker/ Value ratio of pairwise genetic distance between genotypes according to the SSRs data was from 0.508 to 0.691 with an average distance of 0.599. Relatively different grouping pattern in comparison to AFLP data observed through cluster analysis. Both types of molecular markers (AFLP and SSR) used in this research proved to be suitable for investigating genetic diversity in the genotypes of Afghan bread wheat, however, AFLP markers gave better view of genetically relationships among genotypes than the SSR markers. The grouping generated by AFLP data showed a special agreement with the origin regions of genotypes (Ariana-07 and Mazar-99 originating from the north of Afghanistan, Lalmi-03 and Kabul-02. Large number of DNA bands identified with AFLP markers might provide a better estimation of genetic similarity than those of SSR markers.

Seafood are important in human nutrition due to being healthy and valuable proteins resources. Despite serious problems in balanced nutrition found in Turkey, seafood are not consumed sufficiently. In our country, it is necessary to review this situation regarding the consumption of fisheries and to produce solutions by considering the reasons. In this study, the consumption preference of seafood was analyzed in İzmir province, where the fishing and aquaculture production and consumption are made as common. The study was carried out as a questionnaire application to 700 individuals randomly selected in different districts in July 2012. It was determined that 33.8% of the respondents consumes white meat, 19.6% consumes red meat and 8.8% consumes fish. The most consumed fishes by the participants were observed as 40.4% sea bream, 34.2% sea bass, 32.4% horse mackerel, 31.8% anchovy, and 30.4% sardines, respectively. It was determined that 90.4% of the participants consume the fish freshly. As consumption style, frying (51.6%) and grilling (33%) was determined as major preferences. In the study, it was determined that the participants consume an average of 15 kg of fish per year.

The study was aimed to determine the anionic detergent pollution level and some physico-chemical parameters (pH, salinity, dissolved oxygen, total dissolved substance, conductivity, temperature, phosphate, oxidation reduction potential) seasonally in Sarıkum Lake, which is located in Sinop province between November 2016 and July 2017. According to one-year measurement data, the highest of anionic detergent concentration was 0.056 mg / L and the lowest value was 0.021 mg / L. The classification of the results was made in accordance with the Water Pollution Control Regulation (2008) and Surface Water Quality Regulation (2016). In the study, Water quality is equivalent to Class I (high quality) in terms of anionic detergent, pH and temperature values but are equivalent to Class II (a bit dirty) and III (dirty) in point of dissolved oxygen, total dissolved matter and phosphate phosphorus values. In addition, it is equivalent to Class IV (very dirty) with regard to conductivity value. Detergent pollution coming from the settlements of Sarıkum Lake is observed to be low in contrast to expectations, while the high phosphorus value shows that the ecosystem living in the lake is exposed to agricultural pollution especially in terms of environmental resources.