https://hdl.handle.net/20.500.12809/33 2026-04-20T03:37:28Z 2026-04-20T03:37:28Z Altunlu, Hakan Aydöner Çoban, Gökçe Gül, Ayşe Özaktan, Hatice https://hdl.handle.net/20.500.12809/11066 2023-10-31T12:26:37Z 2023-01-01T00:00:00Z

Effect of Rhizobacteria On Drought Stress Tolerance of Tomato Plants at Vegetative and Fruiting Growth Stages Altunlu, Hakan; Aydöner Çoban, Gökçe; Gül, Ayşe; Özaktan, Hatice This study including two successive experiments was conducted to evaluate the effect of native rhizobacteria (RB) strains on drought tolerance of tomato plants at the vegetative and fruiting growth stages. The first experiment was conducted in the growth room by growing plants in nutrient solution under polyethylene glycol induced drought stress, which initiated 7 days after planting and lasted 8 days by increasing the osmotic stress gradually every 48 h from Ψs = −0.25 to −1.00 MPa. Among the 12 RB tested, RB isolates 113 (Bacillus megaterium isolate NUC) and 377 (Bacillus cereus strain BBS7) were selected according to principal component analysis for testing in long term plant production. The second experiment was conducted in the greenhouse by growing plants in perlite filled pots for 128 days after transplanting. Irrigation was based on the water consumption of the plants, and the plants were irrigated to cover well-watered (100% FC) or drought (50% FC) of this amount. For both experiments, seeds were inoculated with the RB strains before sowing. RB inoculation increased plant growth, leaf pigment contents, antioxidant enzyme activities and ascorbic acid level, but reduced malondialdehyde levels in tomato plants under drought stress. The marketable yield was increased 8.7 and 10.6% in the absence of water stress, and 70.2 and 59.9% under water stress by RB 113 and RB 377, respectively.

2023-01-01T00:00:00Z Toker, İlayda Atabey, Selma https://hdl.handle.net/20.500.12809/10907 2023-08-22T13:56:27Z 2023-01-01T00:00:00Z

Determining the Amount and Types of Wastes Generated in Vocational School Cooking Programs and Educational Kitchen Applications and Environmental Recommendations in Education: Example of Ortaca Vocational School Toker, İlayda; Atabey, Selma It is possible to find waste classification and waste management studies related to the food and beverage industry in the literature. Waste classifications and counts have been made in restaurants, hotel kitchens or production areas of mass nutrition systems. However, there is no waste management study related to educational kitchens in the literature. Educational kitchens differ from other kitchen applications interms of purpose and content. In educational kitchens, there is a variety of products, a variety ofproduction, and a small amount of production. Studies in these kitchens are carried out not for one type,but for the products of all different types of production. There are lessons in Ottoman cuisine, Turkish cuisine, regional cuisines, world cuisine, pastry, bread and many other fields. In addition, it is possible to increase the amount of waste due to mistakes and wrong applications during production. In educational kitchens, which are different for these and other reasons, information should be given not only on food production; but also on how to make production without waste andhow to reduce waste. Bringing this awareness to kitchen workers of the future at the beginning of their studies will be beneficial in the sectoral sense. For these purposes, the tools and equipment used in all applications and wastes produced in the application kitchen of Mugla Sitki Kocman University Ortaca Vocational School Cooking Program were counted, classified and recorded over a period of two weeks. According to the data obtained, it was concluded that the highest waste was production waste, while the second highest waste was food waste at the end of the day. Suggestions were made for the recycling of production and food waste; and for waste-free production practices training.

2023-01-01T00:00:00Z Güneri, Murat https://hdl.handle.net/20.500.12809/10756 2024-04-04T08:41:06Z 2023-01-01T00:00:00Z

Effects of Salicylic Acid Application on Germination, Growth and Development of Rough Lemon (Citrus jambhiri Lush.) Under Salt Stress Güneri, Murat Rough lemon (Citrus jambhiri Lush.) - RL, is used as a rootstock for citrus plants in saline conditions. NaCl causes an osmotic stress on plants mainly preventing the water uptake by the roots and thus reducing the plant growth. The objective of this study was to determine the effects of salicylic acid (SA) on germination of seeds and the growth and development of seedlings of RL rootstock under salt stress. For seed germination, a study was conducted in a completely randomized design in a 4 x 4 factorial scheme (SA at 0.00, 0.25, 0.50, or 1.00 mM and NaCl at 0, 50, 100, or 200 mM) with 4 repetitions, totaling 64 plots, of 25 seeds per plot. RL seeds were incubated in SA solutions for 24 h. Then, they were treated with NaCl-containing water in Petri dishes and incubated in the growth chamber at 25 degrees C. For greenhouse experiment, a study was conducted in a randomized complete block in a 4 x 4 factorial scheme (SA at 0.0, 0.5, 1.0, or 2.0 mM and NaCl at 0, 50, 100, or 150 mM) with 3 repetitions, totaling 48 plots, of 2 plants per plot. Some morphological and physiological characteristics were determined. While germination time was extended, germination ratio and radicle extension were decreased in seeds under salt stress compared to control. Moreover, in these conditions the leaf membrane permeability and leaf falling were increased. In turn, plant height, diameter, root and shoot dry weight, leaf relative water content, and leaf chlorophyll were decreased in seedlings. Salt stress had negatively affected seed germination from 97.5% in control to 23.5% in 200 mM NaCl. However, SA treatments significantly decreased plant height to 67.8 cm in 2.0 mM compared to 80.1 cm in control in RL rootstock.

2023-01-01T00:00:00Z Altunlu, Hakan Gül, Ayşe Çoban, Gökçe Aydöner https://hdl.handle.net/20.500.12809/10562 2023-02-28T11:50:55Z 2022-01-01T00:00:00Z

Domates genotiplerinin kuraklık stresine tolerans açısından tohum çimlendirme ve vegetatif gelişme aşamalarında hızlı taranmasına uygun testlerin optimizasyonu Altunlu, Hakan; Gül, Ayşe; Çoban, Gökçe Aydöner Objective: This study was conducted to determine the suitability of drought stress induced by PEG-6000 for rapid screening of tomato genetic resources against drought stress. Material and Methods: Two cultivars; M28 F1 and Alyans F1 known as tolerant and sensitive, respectively; were tested. In seed germination test, two different PEG concentrations (4% and 6%) were compared with the control. The seedling stage test was performed in water culture. In this experiment, (1) bare rooted seedlings of which rooting medium were removed and (2) seedlings with rooting medium were used. Drought dose was Ψs= -1.0 MPa (full dose) and gradually increased (-0.25, -0.50, -0.75 and -1.0 MPa) every 48 hours from 7 days after planting. Results: In seed germination test, the decrease in vigour index under drought stress was lower in M28 variety. In water culture, stress symptoms appeared slowly if the seedlings with rooting medium were used. The decrease in plant growth characteristics, and chloropyll, carotenoid and relative water content and increase in proline content under stress were lower in M28 Conclusion: It was concluded that the seed germination test by 4% PEG-6000 and water culture in which the drought stress was created by PEG-6000 (Ψs= -1.0 MPa) can be used to screen tomato genetic matierials for drought stress tolerance.; Amaç: Bu çalışma, domates genetik kaynaklarının kuraklık stresine karşı hızlı taranması için PEG-6000'in neden olduğu kuraklık stresinin uygunluğunu belirlemek amacıyla yapılmıştır. Materyal ve Yöntem: Çalışmada, kurağa toleransı yüksek (M28) ve düşük (Alyans) olduğu bilinen iki çeşit test edilmiştir. Çimlendirme testinde iki farklı PEG konsantrasyonu (%4 ve %6) denenmiştir. Fide aşamasındaki test su kültürü tekniği ile gerçekleştirilmiştir. Denemede (1) kökleri yetiştirme ortamından temizlenmiş çıplak köklü veya (2) kökleri yetiştirme ortamından temizlenmemiş fideler kullanılmıştır. Su kültürüne alınan fidelere 7 gün sonra kuraklık stresi (Ψs= -1.0 MPa) kademeli olarak (-0.25, -0.5 -0.75 ve -1.0 MPa) her 48 saatte bir artırılarak uygulanmıştır. Araştırma Bulguları: Tohum çimlenme testinde, vigor indeksinde kuraklık stresi altında kontrole kıyasla meydana gelen azalma, M28 çeşidinde daha az olmuştur. Su kültüründe, kökleri yetiştirme ortamından temizlenmemiş fideler kullanılması durumunda stres belirtileri beklenen sürede ortaya çıkmamıştır. Kuraklık stresi altında bitki gelişimi, klorofil a ve b, karotenoid içeriği ve yaprak oransal nem içeriğinde meydana gelen azalış ile prolin içeriğinde meydana gelen artış M28 çeşidinde daha düşük olmuştur. Sonuç: Domates genetik kaynaklarının kuraklık stresine tolerans açısından taranmasında; tohum çimlendirme aşamasında %4’lük PEG-6000, vegetatif gelişme aşamasında durgun su kültüründe PEG-6000 ile Ψs= -1.0 MPa osmotik stres yaratılmasının uygun olduğu sonucuna varılmıştır

2022-01-01T00:00:00Z