Yazar "Ozturk, M." seçeneğine göre listele
Listeleniyor 1 - 10 / 10
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Alliums, an Underutilized Genetic Resource in the East Mediterranean(Int Soc Horticultural Science, 2012) Ozturk, M.; Gucel, S.; Altay, Volkan; Altundag, E.The east mediterranean is the ecoregion overlapped by the fertile crescent, which is regarded as among one of the specific and vulnerable ecosystems. The region is also known as the cradle of civilizations and possesses a rich biodiversity. It has served as a land-bridge for the present day distribution of old world flora and fauna. One of the taxa represented widely in its flora is the genus Allium. The taxa distributed in the east mediterranean are; 27 in Syria; 32 in Lebanon; 8 in Jordan; 25 in Lebanon and Syria; 2 endemics from Lebanon and Palestine; one endemic from Syria, Lebanon and Turkey and 42 in Israil. There are two edible taxa in Cyprus namely Allium neopolitanum and A. ampleoprasum both consumed in large quantities and evaluted as medicinal plants too. It is one of the largest genera of Turkey with 188 taxa, 3 being cultivated and 73 are endemic. Latter include Irano-Turanian (47), mediterranean (72-49 east mediterranean), Euro-Siberian (17) phytogeographical elements, with nearly 61 taxa in danger of extinction. In spite of this rich diversity the genus is an underutilized genetic resource in the region. An attempt will be made here to present some general features of the wild Alliums in the region in order to put forward stratagies for the development of a germplasm centre for Alliums, which can serve as a basis for more productive new introduction studies.Öğe Clustering of halophytic species from Cyprus based on ionic contents(Tech Science Press, 2019) Ozturk, M.; Gucel, S.; Altay, V; Ahmad, M. S. A.; Ashraf, M. Y.; Ashraf, M.This paper presents the work conducted on the chemical constituents of some common and widely distributed halophyte taxa from Cyprus with the aim that these studies will help in the evaluation of halophytes for different economical purposes. The plant species of Crithmum maritimum L., Limbarda crithmoides (L.) Dumort, Atriplex portulacoides L., Salsola kali L., Atriplex halimus L., Limonium oleifolium Mill., L. meyeri (Boiss.) Kuntze; and Tetraena alba (L.f.) Beier & Thulin were collected in the middle of July. The shoot tissue and leaf samples were collected from the natural habitats and left for drying under air circulation followed by placing them in oven at 60 degrees C for 96 hours. The material was crushed using mortar and pestle and subjected to an analysis of macro- and micro-nutrients and biochemical compounds. K+/Na+ in the leaf tissues of the dicot species showed relatively high values depicting their behavior as Na+ includes but very low Cl- levels were recorded. Out of the species investigated here in 4 TFAA content was rather high. Values ranging from 0.5% to 1% dry weight were exhibited in one species. However, only 3 species showed very low TFAA values. Later may be due to low nitrogen availability in their environment. The phenetic analyses of eight halophyte species performed on the data matrix using Ntsys-pc program version 2.1 revealed that, cluster analysis of the overall results obtained here leads to 2 clusters. This discrimination appears to be as a result of their different abilities to accumulate either proline or glycine betaine.Öğe First report of pectobacterium betavasculorum associated with bacterial vascular necrosis and root rot disease of sugar beet in Turkey(British Society for Plant Pathology, 2019) Ozturk, M.; Eroglu, Z.; Soylu, Soner[No abstract available]Öğe Heavy metal stress and responses in plants(Springer, 2019) Ghori, N. -H.; Ghori, T.; Hayat, M. Q.; Imadi, S. R.; Gul, A.; Altay, Volkan; Ozturk, M.Heavy metals such as Fe, Mn, Cu, Ni, Co, Cd, Zn, Hg and arsenic are for long being accumulated in soils through industrial waste and sewage disposal. Although some of these metals are essential micronutrients responsible for many regular processes in plants, their excess, however, can have detrimental effects and can directly influence the plant growth, metabolism, physiology and senescence. Plants have different mechanisms to fight stress, and they are responsible to maintain homeostasis of essential metals required by plants. These mechanisms also focus on prevention of plants exposure to heavy metals present in the soil or providing tolerance to the plant by detoxifying the metals. Other mechanisms are specific and are initiated when the respective stress is encountered. The first line of defense provided by a plant is to reduce the uptake of metals when stimulated with toxicity of heavy metals and includes the help offered by cellular and root exudates that restricts metals from entering the cell. Many plants have exclusive mechanisms for individual metal ions and are involved in sequestering these ions in compartments avoiding their exposure to sensitive components of the cells. As a second line of defense, other mechanisms for detoxification of these metals are introduced that chelates, transports, sequesters and detoxifies these metal ions in the plant's vacuole. During the time of metal toxicity, oxidative stress is pronounced in the cells and production of stress-related proteins and hormones, antioxidants, signaling molecules including heat-shock proteins synthesis is initiated.Öğe Honey - Pollen - Health: Palinochemical Analysis of Honey from Turkey(Int Soc Horticultural Science, 2014) Ozturk, M.; Dalgic, R.; Guvensen, A.; Altay, Volkan; Gucel, S.Honey is one of the oldest known medicines used even today in folk medicine. It has been used in the treatment of wounds, burns, ulcers and also in the prevention of infection. The major antimicrobial factors determined in the honey are osmotic effect, acidity, hydrogen peroxide and plant-derived substances such as flavonoids. The total amount of pollen in the honey is one of the criteria for the selection of real honey, because the quality is correlated with the plants visited by bees. Turkey is exporting honey to many countries. Therefore this paper presents an overview of the pollen spectrum of honey samples in Turkey.Öğe Honey - pollen -health: Palinochemical analysis of honey from Turkey(International Society for Horticultural Science, 2014) Ozturk, M.; Dalgic, R.; Guvensen, A.; Altay, Volkan; Gucel, S.Honey is one of the oldest known medicines used even today in folk medicine. It has been used in the treatment of wounds, burns, ulcers and also in the prevention of infection. The major antimicrobial factors determined in the honey are osmotic effect, acidity, hydrogen peroxide and plant-derived substances such as flavonoids. The total amount of pollen in the honey is one of the criteria for the selection of real honey, because the quality is correlated with the plants visited by bees. Turkey is exporting honey to many countries. Therefore this paper presents an overview of the pollen spectrum of honey samples in Turkey.Öğe Preservation and ecology of a living relict shrub in South Caucasus as a eco-genetic heritage from Tertiary: Epigaea gaultherioides (Boiss. & Bal.) Takht(Triveni Enterprises, 2020) Ozturk, M.; Altay, V; Kucuk, M.; Altundag, E.; Severoglu, Z.; Yalcin, I. E.Aim: Epigaea gaultherioides is an euxine element with a tertiary origin as a relict species facing threat of extinction. In this study, an attempt was made to explore the ecological characteristics by taking into consideration the soil-plant interactions of this taxon. Methodology : Soil and plant samples were collected and analysed using Kjeldahl, Spectrophotometer, Flame photometer and ICP-OES. Results : The findings showed that generally grows on sandy and/or clayey soils, of strong acidic nature, non-calcified, non-saline and high in organic matter. The plant samples collected from the study area were thin iron, aluminium, zinc and nickel; but their percentage in the soils was low. Interpretation : The findings of this study will assist to better understand the ecological requirements of this relict taxon for its possible future successful conservation programs.Öğe Preservation and ecology of a living relict shrub in South Caucasus as a eco-genetic heritage from Tertiary: Epigaea gaultherioides (Boiss. & Bal.) Takht.(Triveni Enterprises, 2020) Ozturk, M.; Altay, Volkan; Kucuk, M.; Altundag, E.; Severoğlu, Z.; Yalçin, I.E.Aim: Epigaea gaultherioides is an euxine element with a tertiary origin as a relict species facing threat of extinction. In this study, an attempt was made to explore the ecological characteristics by taking into consideration the soil-plant interactions of this taxon. Methodology: Soil and plant samples were collected and analysed using Kjeldahl, Spectrophotometer, Flame photometer and ICP-OES. Results: The findings showed that generally grows on sandy and / or clayey soils, of strong acidic nature, non-calcified, non-saline and high in organic matter. The plant samples collected from the study area were rich in iron, aluminium, zinc and nickel; but their percentage in the soils was low. Interpretation: The findings of this study will assist to better understand the ecological requirements of this relict taxon for its possible future successful conservation programs. © Triveni Enterprises, Lucknow (India)Öğe Soil-plant interactions in the monumental plane trees (Platanus orientalis) grove-Canakkale-Turkey(Triveni Enterprises, 2017) Ozturk, M.; Uysal, I.; Yucel, E.; Altay, Volkan; Karabacak, E.Aim : To study ecological features of monumental plane trees. Evaluate soil-plant interactions and mineral nutrition status of 150 to 800 year-old-chosen trees. Methodology : Soil and plant samples were collected and analysed using Kjeldahl, spectrophotometer, Flame photometer and ICP-OES. Results : The pH, electrical conductivity, calcium carbonate, organic matter, total nitrogen, phosphorus, sodium, potassium, calcium, magnesium, iron, manganese, zinc and copper values in the soil samples ranged between 6.6-7.4, 0.58-1.26 (dS. m(-1)), 0.00-1.52%, 1.55-5.05%, 0.08-0.29%, 4-28 ppm, 20-33 ppm, 50-314 ppm, 1086-3041 ppm, 54-302 ppm, 3.57-15.30 ppm, 3.37-13.29 ppm, 1.84-4.17 ppm, and 0.411.48 ppm, respectively. The mineral element values in young root, young stem, elderly stern, stem bark and leaf showed normal range.A strong relation has been noted among the Mg, P, Na, Mn, Fe, total N and Zn. Interpretation : Excess amount of Fe and Ca get accummulated in different plant parts.Öğe Species composition of dry-temperate forest as an important habitat for wildlife fauna species(Triveni Enterprises, 2020) Rajpar, M. N.; Ozturk, M.; Altay, V; Ullah, S.; Ullah, A.; Martin, C. O.; Gucel, S.Aim: To determine the present species composition and diversity in dry temperate forest ecosystem, especially trees, shrubs, ground cover, birds, reptiles and mammals. Methodology: The vegetation composition and diversity of dry-temperate forest in Kumrat valley was determined through employing the 20x20 m (0.4 ha) quadrant method. In addition, fauna species were detected through direct visual observations. A total of 100 quadrant plots were randomly selected to determine the vegetation composition and diversity from July, 2017 to August, 2018. Results: A total of 7 tree species, 3 shrubs, and 12 grass species were identified, which were attracted into the study area. The highest tree density was determined for P wallichiana (3.375 tree ha(-1) and the lowest one for J. regia (0.300 tree ha(-1)). CAP tests indicated that the diversity indices, i.e., Shannon-Winner's Diversity Index (H-1=2.908 +/- 0.161), Margalefs Richness Index (R-1=3.26 +/- 0.112) and McIntosh Evenness Index (E=0.9746 +/- 0.0206) occured in Kumrat valley. Further, diversity indices of trees varied from species to species, e.g., the highest tree species diversity (H-1=2.248) and species richness (R-1=2.730) was recorded in Picea smithiana and the lowest one (H-1=0.297) and richness (R-1=0.4024) in Juglans regia. Taxus baccata (E=0.9763) showed even distribution in the study area as compared to other tree species. The direct observation observed a total of 11 mammal species (6 endangered, 3 data deficient, and 2 species least concern), 41 bird species (mostly least concern), and 6 reptile species (4 least concern, one data deficient, and one vulnerable) simultaneously within the same area where plant cover was determined. Interpretation: The results of this study demonstrated that plant cover structure and composition of dry-temperate forest is the most prominent factor that had formed a wide array of different habitats to attract the higher diversity of fauna.
