خيارات البحث
النتائج 331 - 340 من 395
Effect of Drought Stress on Morphological and Physiological Traits at Panicle Initiation Stage in Six Rice Genotypes (Oryza sativa L.) النص الكامل
2023
Sharifunnessa Moonmoon | Solaiman Ali Fakir | Tariqul Islam
Drought is one of the most prevalent forms of abiotic environmental stress that reduce crop productivity. A pot experiment was performed in two Aman seasons under drought (40% field capacity, FC) and control (100% field capacity, FC) irrigations to study drought tolerance mechanism(s) based on morphological and physiological traits in six aromatic rice genotypes. Twelve treatments (6 genotypes × 2 irrigations) were arranged in Complete Randomized Design and experiment was carried out at Bangladesh Institute of Nuclear Agriculture, Bangladesh Agricultural University, Mymensingh. In the experiment, drought was imposed at panicle initiation stage where morphological and physiological data were recorded. Important morphological (stem and root dry weight) and physiological (photosynthesis and chlorophyl content) attributes were significantly (P>0.05) decreased at 40% FC in both the years. Compared to control, relative reduction at 40% FC in above parameters, genotypes were classified into tolerant (Binadhan-13 and NERICA mutant) and sensitive (RM-100-16, Ukunimodhu, Kalizira, and BRRI dhan34) categories. Tolerant genotypes had smaller reduction in shoot and root dry mater (av. 7.73 and 5.56 %, respectively) than sensitive ones (av. 19.32 and 21.80%, respectively). Low reduction percentages of the traits under drought stress to that of the control discriminated Binadhan-13 and NERICA mutant genotypes consistently as drought tolerant.
اظهر المزيد [+] اقل [-]Evaluation of Some Agro-morphological Characteristics of Dwarf Snap Bean Genotypes Collected from Erzurum Province النص الكامل
2023
Raziye Kul | Ertan Yıldırım
The study was conducted in the trial area of the Department of Horticulture at Atatürk University during the 2022 cropping season to evaluate some agro-morphological characteristics of the dwarf-type snap bean genotypes collected from Erzurum along with the commercial cultivars SARIKIZ and GINA have been widely cultivated there. The genotypes tested in the study showed statistically significant variations in terms of all parameters examined. Genotypes ERZ PA 28 and ERZ UZ 36 reached the earliest fresh maturity time by 58 days. The genotype with the longest pod was ERZ NR 104 (17.35 cm); the genotypes with the widest pod were ERZ UZ 36 (15.29 mm) and ERZ TO 49 (15.43 mm); and the genotype with the thickest pod was ERZ İS13 (8.75 mm). The ERZ TO 49 genotype had the most pods per plant (32.41), the highest yield per plant (217.73 g), and the highest yield per square meter (1360.79 g/m2), while the ERZ UZ 35 genotype produced the heaviest average pod weight (8.63 g). Additionally, in terms of the number of pods per plant, yield per plant, and yield per square meter, ERZ PA 28 has been determined to produce the results that are closest to ERZ TO 49. According to the study’s findings, ERZ IS 13, ERZ PA 28, ERZ UZ 32, ERZ UZ 35, ERZ UZ 36, ERZ TO 48, ERZ TO 49, ERZ NR 104, ERZ PS 111, ERZ PS 115, and ERZ PS 116 genotypes yields per square meter was founded that higher than commercial cultivars and other genotypes, can offer the producer a sufficient level of yield.
اظهر المزيد [+] اقل [-]Characterization of Lactose-Free Dulce de Leche النص الكامل
2023
Olcay Mercan | Zerrin Yüksel
The aim of the study is to be determine the effect of lactose hydrolysis and sugar content on physicochemical properties, sensory profile and HMF (5-hydroxymethylfurfural) content in Dulce de Leche (DL). Lactose free (lactose-hydrolysed) dairy products as well as low sugar products have been developed to supply consumer demand. Two different sucrose concentrations, 16% and 20%, were used in milk jam samples produced by the traditional method. For the formation of desired colour and flavour in the Dulce de Leche, Maillard reaction products are mainly responsible. HMF is Maillard reaction indicator analysed in this work. Fat, protein, solid content, ash, lactic acid and pH analysis were carried out. Sucrose, glucose, fructose and lactose concentrations were determined. Lightness, yellowness and redness as colour parameters of DL samples were evaluated and sensory analyses were also performed. It has been revealed that lactose hydrolysis causes significant changes in the color parameters and sensory profile of the samples. In this study, less or no HMF was detected in the lactose hydrolyzed DL samples compared to the control samples.
اظهر المزيد [+] اقل [-]Effect of Drought and UV-B Stress on Leaf Morphology of Ash-Leaved Maple and Sycamore Maple النص الكامل
2023
Hatice Çobanoğlu | Şemsettin Kulaç
Global climate change continues to leave irreversible effects worldwide. With the increase in the effects of climate change, especially in recent years, the amount of UV-B radiation reaching the earth's surface is also likely to increase. With increasing temperatures, the amount of precipitation in the world has decreased, and the drought has started to alarm. This study is tried to understand how plants can respond to these stresses using ash-leaf maple (Acer negundo L.) and sycamore maple (Acer pseudoplatanus L.) species. The effects of these stress factors on plant leaf morphology were investigated by applying certain intensities of drought (moderate [T2] and severe drought [T3]) and UV-B (8 kJ m-2 h-1 [T4] and 12 kJ m-2 h-1 [T5]) stresses on these two species with T1 (control) treatment. As a result, leaf width in A. pseudoplatanus species was at the lowest levels in individuals exposed to T3 and T9. In A. negundo species, leaflet length in T1, T2, T3, T4 T5, T6 (modarete+T4), T7 (modarete+T5), T8 (severe drought+T4), and T9 (severe drought+T5) treatment were 8.800, 8.704, 8.075, 8.792, 8.823, 8.516, 8.317, 7.993, and 8.605 cm, respectively. According to these values, it was observed that the leaflet length was the shortest in T8 (7.993 cm) treatment. On the other hand, the leaflet length in T9 was close to the T1 group. As a result, individuals exposed to T4 were more affected than T5 in applications applied to UV-B stress and T3. Therefore, the increase of UV-B radiation positively affects the plant's resistance to drought stress.
اظهر المزيد [+] اقل [-]Katı Atık Düzenli Depolama Tesislerinde Peyzaj Onarım Yaklaşımı: Burdur İli Örneği النص الكامل
2023
Selinay Cerit | Latif Gürkan Kaya | Hüseyin Samet
Sanayi devriminden sonra hızlı kentleşmeye paralel olarak ortaya çıkan atıklar ve bu atıkların yönetimi kentler için önemli bir sorun teşkil etmektedir. Ülkemizde kentsel atıklar için gelişigüzel uzaklaştırma yöntemi ve düzenli depolama yöntemi kullanılmaktadır. Düzenli depolama yöntemi atık üretiminin zararlılığının önlenmesi ve azaltılması amacıyla uygulanmaktadır. Fakat düzenli depolama tesisleri kentsel çevre içerisinde yer aldığında yaşam ortamının kalitesinde düşme ya da kentsel ekolojide bozulmalar gibi çevresel sorunlar meydana getirmektedir. Çevresel sorunlardan biri olan kirleticiler Burdur kentinde yer alan Katı Atık Düzenli Depolama Tesisi ve yakın çevresinde görülmektedir. Katı Atık Düzenli Depolama Tesisi potansiyel kentsel yapılaşma alanında yer almaktadır. Bu sebeptendir ki çevredeki görüntü ve hava kirliliği en aza indirgenmelidir. Tesise peyzaj onarım tekniği kullanılarak peyzaj tasarım projesinin hazırlanması, minimum değişiklikle çevresel sorunların giderilebileceğini göstermektedir. Bu kapsamda; Burdur kentinde yer alan Katı Atık Depolama Tesisinin sebebiyet verdiği kirleticilerin önüne geçilmesi ve potansiyel kentsel yerleşim alanlarının çevresel kalitesini artırmak amacı ile öneri projesi hazırlanmıştır.
اظهر المزيد [+] اقل [-]Assessment of the Effect of Covid-19 Pandemic Lockdown Dietary Diversity among Urban Households in Jos, Plateau State, Nigeria النص الكامل
2023
Solomon Taiwo Folorunso | Ruth Alabi | Omolola Stephen-Adamu | Godfrey Onuwa
Dietary diversity became a global concern in improving health conditions through the habit of food group consumption by adding health dimension to the issue of food calorie consumption. Access to nutritionally adequate and good quality diet is essential to human health, productivity and work output. However, despite the various concerns by governments all over the world on ensuring that every household can at least provide three square meals per day, food insecurity continues to be a major development problem across the globe. This study assessed the effect of COVID-19 pandemic lockdown on households’ dietary diversity in Jos Metropolis, Plateau State, Nigeria. A multistage sampling technique was used to select 265 households. Data was collected using well-structured questionnaire. The analytical techniques were; Descriptive statistics, Dietary Diversity index and Z-Statistics Test. Gender, age, household size, education, marital status, cooperative membership and access to credit were the socioeconomic characteristics described. Result indicate that 86% of the households had low food dietary diversity while 14% of the households had high food dietary diversity before and after the pandemic lockdown. Similarly, 18% of the households had low calorie consumption while 82% of the households had high dietary diversity before and after the pandemic lockdown. Cereals, legumes/grains, oils/fat, roots and tubers, sugar and honey and meats were the most common food consumed by the households daily before and after the COVID-19 pandemic lockdown. Result further indicate that the pandemic lockdown had effect on the dietary diversity and food consumption patterns of the urban households. It can be concluded that the understanding of the effect of the COVID-19 pandemic lockdown on dietary diversity and food consumption patterns of households is important in developing policy measures such as social safety nets, home feeding programmes, the school feeding programme, conditional cash transfers schemes and improved marketing channels that will help mitigate against households falling into food insecurity during similar pandemic in the future.
اظهر المزيد [+] اقل [-]The Effect of Remote Teleconnection Patterns on Temperature and Precipitation of the Euphrates-Tigris Basin النص الكامل
2023
Beyza Reyyan Bensiz | Hakan Aksu
The Euphrates-Tigris Basin is the most important water source in the Middle East. The present study examined the relationship between the precipitation and temperature characteristics of the basin using remote teleconnection patterns on a monthly time scale. The effects of the North Atlantic, Arctic Oscillations, North Sea Caspian Pattern, and Western Mediterranean indices were examined. The relationship between teleconnection patterns and precipitation/temperature was investigated by adopting Spearman’s Correlation test. All of the remote teleconnection patterns had significant effects on the temperature and precipitation characteristics of the basin. However, the North Sea Caspian Pattern significantly affected the temperatures of the entire basin. Similarly, the Western Mediterranean index had a significant effect on the average temperatures for four months (February, April, November, and December) in almost the entire basin. Also, the Western Mediterranean Index corralates positively with the precipitation of the basin in January, while the correlation is negative in October, and November. Especially, the Western Mediterranean Index and the North Sea Caspian Pattern showed one-month and two-month delayed relationships in monthly total precipitation in some months. At the extremes of the index values, relationships often became strong and distinct. The study results may be useful for seasonal temperature and precipitation forecasts of the Euphrates-Tigris basin.
اظهر المزيد [+] اقل [-]Organic Aquaculture and Organic Feeds النص الكامل
2023
Oğuz Taşbozan
Environmental awareness is increasing around the world, however, the production of eco-friendly food products has started to gain importance in order to protect nature and reduce dependence on it. In addition, due to the awareness of people, it increases the demand for healthy foods. As a result, organic farming is developing and the number of organic product farms is increasing. Organic aquaculture products have also started to take their place in this big market. Although many of the rules and standards applied in organic agriculture are similar, the rules of organic aquaculture products contain differences on the basis of species. Significant progress has been made with the organic aquaculture production standards determined by international organizations and each country. Organic aquaculture defines organic aquatic organisms that are fed with organic feeds approved by authorized organizations and grown in accordance with all organic farming standards. The main principles of organic culture; health, ecology, fairness and care. Therefore, these basic principles are adhered to when determining organic aquaculture standards. In this review, general and current information were given about the organic aquaculture and organic feeds.
اظهر المزيد [+] اقل [-]Mısır Silajının Fermantasyon, Aerobik Stabilite Özellikleri Üzerine Aktifleştirilen Lactobacillus buchneri ve Üre İlavesinin Etkileri النص الكامل
2023
Caner Bağcık | Berrin Okuyucu | Fisun Koç
Bu çalışma, silolama öncesi aktifleştirilen Lactobacillus buchneri (NCIMB 40788 ˗ CNCM I-4323; Lalsil AS, Lallemand Inc., Canada) inokulantının mısır silajına üre ile ilavesinin fermantasyon ve aerobik stabilite üzerine etkilerini belirlemek amacıyla düzenlenmiştir. Mısır süt olum döneminde hasat edilmiştir. Hasat sonrası materyaller, 6 muamele grubuna bölünmüştür. Muamele grupları 1- Kontrol; 2- Lactobacillus buchneri (LB), 3×108 kob/g taze materyal; 3- Üre (Üre), %1 kuru madde; 4- Lactobacillus buchneri + Üre (LB+Üre); 5-Aktive edilen Lactobacillus buchneri (aLB), 3×108 kob/g taze materyal; 6- Aktive edilen Lactobacillus buchneri + Üre (aLB+Üre)’den oluşmaktadır. Katkı maddesi ilavesinden sonra silaj örnekleri her muamele grubunda 3’er tekerrür olmak üzere plastik torbalara vakumlanarak doldurulmuştur. Fermantasyonun 1., 3., 7., 14. ve 75. günü açılan silaj örneklerinde kimyasal ve mikrobiyolojik analizler yapılmıştır. Yetmiş beşinci gün açılan silajlara 7 gün süre ile aerobik stabilite testi uygulanmıştır. Bu çalışmada silolama öncesi aktifleştirilen Lactobacillus buchneri inokulantı ve üre ilavesi mısır silajlarının fermantasyonun ve aerobik stabilitesini olumlu yönde etkilemiştir. aLB grubundaki silajların ham protein (HP), laktik asit (LA) değerleri artarken, asetik asit (AA), propiyonik asit (PA), pH, nötral çözücülerde çözünmeyen lif (NDF), asit çözücülerde çözünmeyen lif (ADF), hemiselüloz (HSEL) ve maya içerikleri ise düşmüştür. Silajlara aLB+ Üre ilave edilmesi silajların aerobik stabilitelerinin gelişmesini sağlamıştır. Sonuç olarak aktifleştirilen Lactobacillus buchneri ve ürenin birlikte kullanılması mısırın fermantasyon profili, kimyasal bileşimini ve aerobik stabilitesini iyileştirebilir.
اظهر المزيد [+] اقل [-]Sürdürülebilir Beslenme Modellerinin Karşılaştırılması النص الكامل
2023
Aybuke Ceyhun Sezgin | Fatma Elif Eroğlu | Nevin Şanlıer
Küresel iklim değişikliği ve su yetersizliği nedeni ile besin talebini karşılamak için ekonomik yönü, çevresel-sosyal etkileri ve gıda güvenliği değerlendirmelerinin çoğunda sürdürülebilirlik konularına yer verilmemektedir. Gıda Tarım Örgütü (FAO) ve Dünya Sağlık Örgütü (WHO) sürdürülebilir sağlıklı diyetin tanımını “Sürdürülebilir diyetler düşük çevresel etkili, besin ve beslenme güvencesinin günümüzde var olmasını ve gelecek nesillere aktarılmasını sağlayan sağlıklı yaşamı hedefleyen diyetlerdir” şeklinde yapmıştır. Dünya’da sürdürülebilir diyetlerin insanlara ve doğal kaynaklara uygun, biyoçeşitliliğe ve ekosisteme karşı koruyucu, saygılı, duyarlı, ekonomik olarak ulaşılabilir ve beslenme açısından yeterli, güvenilir ve sağlıklı olması gerekmektedir. Çevresel bozulmaların sonucunda besin üretimi ve tüketimi olumsuz yönde etkilenmektedir. Mevcut küresel besin sistemi ve beslenme sürdürülebilirlik açısından değerlendirildiğinde yetersiz olduğu düşünülmektedir. Ancak gıda güvenliği ve sürdürülebilirlik için yapılan çalışmalarda sağlıklı beslenme durumunu sürdürmek için kritik olan diyet ve besin çeşitliliği ile mikro besin yeterliliğini ele alınmamıştır. Bu nedenle derlemede sürdürülebilir beslenme açısından farklı toplumların benimseyerek uyguladığı, sağlıklı ve sürdürülebilir olarak değerlendirilen bazı beslenme modellerinden olan Akdeniz, Dash, Yeni Nordik, Temiz Baltık, Vejetaryen, Paleotik ve Intermittent Fasting Diyet gibi beslenme modelleri irdelenerek sürdürülebilir diyetlerin hem insan sağlığı hem de çevreye olan etkileri üzerine odaklanılmıştır.
اظهر المزيد [+] اقل [-]