{"title":"Üniversite Öğrencilerinin Akademik Başarısını Etkileyen Faktörler: Tarım Ekonomisi Bölümü Örneği","authors":"Görkem Örük, Sait Engi̇ndeni̇z","doi":"10.19159/tutad.885812","DOIUrl":"https://doi.org/10.19159/tutad.885812","url":null,"abstract":"","PeriodicalId":32452,"journal":{"name":"Turkiye Tarimsal Arastirmalar Dergisi","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67793580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study aims to determine the antioxidant activities of fruit, leaf, and branche extracts of Morus alba L. and Morus nigra L. species collected from Diyarbakir. Different in vitro methods such as Total Phenol Content (TPC), Total Flavonoid Content (TFC), Copper (II) Ion Reducing Antioxidant Capacity (CUPRAC), 2,2´-diphenyl-1-pikrilhidrazil (DPPH), and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging methods were used to evaluate the antioxidant activities of the two Morus species. The highest total phenolic amount belongs to acetone extract (257.5±0.05 μg gallic acid equivalent mg-1) obtained from M. nigra branches, while the highest total flavonoid content was found in acetone extract (185.8±0.15 μg catechin equivalent mg-1) obtained from M. nigra leaves. In the CUPRAC test, the highest activity was observed in methanol extracts from M. alba branches (IC50 values is 35.63±0.22 μg mg-1). The IC50 values of the DPPH radical scavenging activity of the extracts are between 128.1±0.13 and 2494.7±0.30 μg mg-1, the best radical scavenging activity was demonstrated by acetone extract (128.1±0.13 μg mg-1) prepared from the M. alba branche. The highest ABTS radical scavenging activity belongs to the methanol extract (75.5±0.25 μg mg-1) obtained from the M. alba branches. The results prove that both Morus species possess antioxidant properties, not only in leaves and fruits but also in the branches. At the end of the study, it was determined that M. alba and M. nigra have medicinal usage value which can be used as natural antioxidants.
本研究旨在测定采自迪亚巴克尔地区的桑(Morus alba L.)和桑(Morus nigra L.)果实、叶和枝提取物的抗氧化活性。采用总酚含量(TPC)、总黄酮含量(TFC)、铜(II)离子还原抗氧化能力(CUPRAC)、2,2′-二苯基-1-吡唑肼(DPPH)和2,2′-氮基-双(3-乙基苯并噻唑啉-6-磺酸)(ABTS)自由基清除方法对两种桑树的抗氧化活性进行了评价。总酚含量最高的是黑枝丙酮提取物(257.5±0.05 μg没食子酸当量mg-1)，总黄酮含量最高的是黑叶丙酮提取物(185.8±0.15 μg儿茶素当量mg-1)。在CUPRAC实验中，白刺枝甲醇提取物的活性最高(IC50值为35.63±0.22 μg -1)。各提取物对DPPH自由基清除能力的IC50值在128.1±0.13 ~ 2494.7±0.30 μg mg-1之间，其中以白枝丙酮提取物(128.1±0.13 μg mg-1)的清除能力最强。对ABTS自由基清除活性最高的是白刺枝甲醇提取物(75.5±0.25 μg mg-1)。结果表明，两种桑树不仅在叶片和果实中具有抗氧化性，而且在树枝中也具有抗氧化性。研究结果表明，白檀和黑檀具有一定的药用价值，可作为天然抗氧化剂使用。
{"title":"Investigation of antioxidant activities of fruit, leaf and stem extracts of white (Morus alba L.) and black (Morus nigra L.) mulberry species of Diyarbakır","authors":"Mizgin Abay, Nuraniye Eruygur","doi":"10.19159/tutad.841557","DOIUrl":"https://doi.org/10.19159/tutad.841557","url":null,"abstract":"This study aims to determine the antioxidant activities of fruit, leaf, and branche extracts of Morus alba L. and Morus nigra L. species collected from Diyarbakir. Different in vitro methods such as Total Phenol Content (TPC), Total Flavonoid Content (TFC), Copper (II) Ion Reducing Antioxidant Capacity (CUPRAC), 2,2´-diphenyl-1-pikrilhidrazil (DPPH), and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging methods were used to evaluate the antioxidant activities of the two Morus species. The highest total phenolic amount belongs to acetone extract (257.5±0.05 μg gallic acid equivalent mg-1) obtained from M. nigra branches, while the highest total flavonoid content was found in acetone extract (185.8±0.15 μg catechin equivalent mg-1) obtained from M. nigra leaves. In the CUPRAC test, the highest activity was observed in methanol extracts from M. alba branches (IC50 values is 35.63±0.22 μg mg-1). The IC50 values of the DPPH radical scavenging activity of the extracts are between 128.1±0.13 and 2494.7±0.30 μg mg-1, the best radical scavenging activity was demonstrated by acetone extract (128.1±0.13 μg mg-1) prepared from the M. alba branche. The highest ABTS radical scavenging activity belongs to the methanol extract (75.5±0.25 μg mg-1) obtained from the M. alba branches. The results prove that both Morus species possess antioxidant properties, not only in leaves and fruits but also in the branches. At the end of the study, it was determined that M. alba and M. nigra have medicinal usage value which can be used as natural antioxidants.","PeriodicalId":32452,"journal":{"name":"Turkiye Tarimsal Arastirmalar Dergisi","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67793154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Farklı Tuz Konsantrasyonlarının Bazı Tatlı Sorgum Sorghum bicolor var. saccharatum (L.) Mohlenbr. Çeşitlerinin Çimlenme Özellikleri Üzerine Etkileri","authors":"M. A. Özyazıcı, S. Acikbas","doi":"10.19159/TUTAD.769463","DOIUrl":"https://doi.org/10.19159/TUTAD.769463","url":null,"abstract":"","PeriodicalId":32452,"journal":{"name":"Turkiye Tarimsal Arastirmalar Dergisi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49424080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cennet Yaman, S. Uranbey, Hussein Abdullah Ahmed Ahmed, Dilek Başalma
: In this study, it was aimed to test the seed viability of Alkanna orientalis and endemic Alkanna sieheana species rich in Alkannin/Shik onin (A/ S ) and to determine the germination percentage and callus regeneration suitable for in vitro A/S production. The viability rates of seeds collected from nature were determined by the tetrazolium method. The germination rates of the seeds of both species were tested with three different applications (on filter paper, MS nutrient medium with agar, in peat). The seed coats of both species were removed, and their embryos were cultivated in Murashige and Skoo g (MS) media containing plant growth regulators in various proportions. The viability rates of the seeds were found at 98.3% for A. orientalis and 96.0% for A. sieheana . Germination rates were determined only on filter paper as 8.3% for A. orientalis and 5 .0% for A. sieheana , no germination was observed in other applications. The highest zygotic shoot and root formation rate were obtained from A. orientalis with 91.6% and 40.3%, respectively. But, the highest callus formation rate was observed on A. siehenea with 75.0%. As a result, it was determined that although the viability rates were high in both species, the germination rates were low, but in vitro reproducibility was possible.
{"title":"Bazı Alkanna Türlerinin Tohum Canlılık Testi, Çimlenme Oranı ve in vitro Rejenerasyonu","authors":"Cennet Yaman, S. Uranbey, Hussein Abdullah Ahmed Ahmed, Dilek Başalma","doi":"10.19159/tutad.892928","DOIUrl":"https://doi.org/10.19159/tutad.892928","url":null,"abstract":": In this study, it was aimed to test the seed viability of Alkanna orientalis and endemic Alkanna sieheana species rich in Alkannin/Shik onin (A/ S ) and to determine the germination percentage and callus regeneration suitable for in vitro A/S production. The viability rates of seeds collected from nature were determined by the tetrazolium method. The germination rates of the seeds of both species were tested with three different applications (on filter paper, MS nutrient medium with agar, in peat). The seed coats of both species were removed, and their embryos were cultivated in Murashige and Skoo g (MS) media containing plant growth regulators in various proportions. The viability rates of the seeds were found at 98.3% for A. orientalis and 96.0% for A. sieheana . Germination rates were determined only on filter paper as 8.3% for A. orientalis and 5 .0% for A. sieheana , no germination was observed in other applications. The highest zygotic shoot and root formation rate were obtained from A. orientalis with 91.6% and 40.3%, respectively. But, the highest callus formation rate was observed on A. siehenea with 75.0%. As a result, it was determined that although the viability rates were high in both species, the germination rates were low, but in vitro reproducibility was possible.","PeriodicalId":32452,"journal":{"name":"Turkiye Tarimsal Arastirmalar Dergisi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48795700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
: This study was conducted in the pasture of Aslançayırı village (41°00'52" N, 35°38'59" E, 800 m altitude), Havza district of Samsun province, located in the Central Black Sea Region of Turkey, to determine the changes in pasture vegetati on caused by improvement and management applications. The rangeland has been divided into two different sections depending on the destruction level caused by its use, and a holistic program has been implemented for improvement. Fertilization, cleaning clipping, and alternating grazing system were applied throughout the pasture and in addition, seeding was applied to the 1st section ( Destroyed by plowing pasture), and mechanical aeration was applied to the 2nd section (Base pasture). The alterations in the pasture were determined by the modified wheeled loop method before and after the improvement applications. The improvement applicat ions have increased the ratio of legumes and grasses, decreased the ratio of other families in the pasture, and contribute to the formation of balanced vegetation. Before the improvement, the rates of annual, invasive, and decreasing species 45.02%, 46.54% respectively. In the pre -improvement peri od, while Lotus corniculatus , Hordeum murinum , Taraxacum officinale , Bellis perennis , Carex acuta , Cyndon dactylon and Scariola viminea species were dominant in the pasture, it was observed that decreasing species such as Trifolium repens , Poa pratensis , Lolium perenne became dominant after the improvement. The improvement and management applications increased the plant- covered area throughout the pasture from 91.0% to 98.4% and grazing capacity from 10.17 AU (Animal Unit) to 18.01 AU and enhanc ed the pasture condition and health category from medium -healthy to good- healthy. It has been concluded that the prevention of excessive and untimely grazing is the most decisive factor in ensuring the progress achieved, and it is recommended to continue t he grazing plan implemented in terms of sustainability.
{"title":"Mera Islah ve Amenajman Uygulamalarının Vejetasyon Üzerine Etkileri","authors":"Tamer Yavuz, Kadir Ispirli","doi":"10.19159/tutad.875860","DOIUrl":"https://doi.org/10.19159/tutad.875860","url":null,"abstract":": This study was conducted in the pasture of Aslançayırı village (41°00'52\" N, 35°38'59\" E, 800 m altitude), Havza district of Samsun province, located in the Central Black Sea Region of Turkey, to determine the changes in pasture vegetati on caused by improvement and management applications. The rangeland has been divided into two different sections depending on the destruction level caused by its use, and a holistic program has been implemented for improvement. Fertilization, cleaning clipping, and alternating grazing system were applied throughout the pasture and in addition, seeding was applied to the 1st section ( Destroyed by plowing pasture), and mechanical aeration was applied to the 2nd section (Base pasture). The alterations in the pasture were determined by the modified wheeled loop method before and after the improvement applications. The improvement applicat ions have increased the ratio of legumes and grasses, decreased the ratio of other families in the pasture, and contribute to the formation of balanced vegetation. Before the improvement, the rates of annual, invasive, and decreasing species 45.02%, 46.54% respectively. In the pre -improvement peri od, while Lotus corniculatus , Hordeum murinum , Taraxacum officinale , Bellis perennis , Carex acuta , Cyndon dactylon and Scariola viminea species were dominant in the pasture, it was observed that decreasing species such as Trifolium repens , Poa pratensis , Lolium perenne became dominant after the improvement. The improvement and management applications increased the plant- covered area throughout the pasture from 91.0% to 98.4% and grazing capacity from 10.17 AU (Animal Unit) to 18.01 AU and enhanc ed the pasture condition and health category from medium -healthy to good- healthy. It has been concluded that the prevention of excessive and untimely grazing is the most decisive factor in ensuring the progress achieved, and it is recommended to continue t he grazing plan implemented in terms of sustainability.","PeriodicalId":32452,"journal":{"name":"Turkiye Tarimsal Arastirmalar Dergisi","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67793390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparative Evaluation of Two Commercial Propolis Extracts as Plant Defense Activator and Antimicrobial Agent Against Pseudomonas syringae pv. tomato (Pst) strain DC3000","authors":"M. Ateş, N. Özkurt, Y. Bektas","doi":"10.19159/tutad.890935","DOIUrl":"https://doi.org/10.19159/tutad.890935","url":null,"abstract":"","PeriodicalId":32452,"journal":{"name":"Turkiye Tarimsal Arastirmalar Dergisi","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47105136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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