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Articles 1891 - 1920 of 2171
Full-Text Articles in Life Sciences
A Research On Evaluating For Recreation And Tourism Potential Of Natural Resource Values At Çoruh Watershed Area (Yusufeli Region), Öner Demi̇rel
A Research On Evaluating For Recreation And Tourism Potential Of Natural Resource Values At Çoruh Watershed Area (Yusufeli Region), Öner Demi̇rel
Turkish Journal of Agriculture and Forestry
The watershed area of Çoruh River in Yusufeli Region with its untouched landscape values is one of the distinguished potential areas where recreational and nature tourism activities can be carried out. In this research, the natural and cultural potentials of the area have been studied. In addition, recreational and touristic areas as well as the general recreational tendencies of people in the study area have been determined. A total of 500 questionnaire forms, which were prepared in the light the data gathered from this preliminary research, were applied to people living in the research area at both residential and temporary …
Investigation On Agronomical And Quality Characteristics Of Improved Clonnes In Origanum (Origanum Onites L.) Breeding, Ayhan Ceylan, Emi̇ne Bayram, Hati̇ce Geren
Investigation On Agronomical And Quality Characteristics Of Improved Clonnes In Origanum (Origanum Onites L.) Breeding, Ayhan Ceylan, Emi̇ne Bayram, Hati̇ce Geren
Turkish Journal of Agriculture and Forestry
Flora of west and southwest Anatolian regions are very rich in terms of Origanum species. A large amount of Origanum onites L. plants collected from the flora is consumed in Turkey and exported. In order to determine agronomical and technological characteristics of 14 improved clonnes by selection of Origanum onites L. populations collected flora of İzmir, Muğla and Antalya regions this study was conducted under Bornova ecological conditions. According to two years averages; drog herbage and drog leaf yield were obtained 12760 kg/ha, 7420 kg/ha, respectively. Essential oil rate varied from 2.61 % to 5.12 %, carvacrol rate varied from …
Volume Equations And Volume Tables For Black Pine In Taşköprü, Hakki Yavuz
Volume Equations And Volume Tables For Black Pine In Taşköprü, Hakki Yavuz
Turkish Journal of Agriculture and Forestry
In this study, single, double and multiple-entry tree volume equations were constructed according to six performance criteria (average residuals or bias, average absolute residuals, standard deviation of residuals or presicion, coefficient of determination, percent total error and percent absolute mean error) for black pine (Pinus nigra Arn. Subs. Pallasiana) in Taşköprü Forest District. The results indicate that the best volume equations chosen from each equation systems can be used for black pine in Taşköprü Forest District at the 0.05 significant level.
Changes In The Stability Of Frozen Puff Pastry Doughs During The Shelf Life, Orhan Dağlioğlu, Murat Taşan, Bariş Tunçel
Changes In The Stability Of Frozen Puff Pastry Doughs During The Shelf Life, Orhan Dağlioğlu, Murat Taşan, Bariş Tunçel
Turkish Journal of Agriculture and Forestry
In this research changes in the free fatty acidity (%) and peroxide values, fatty acid composition, specific height and sensory properties of puff pastry doughs were investigated during the shelf-life (12 months) by storing them at -18 °C after being frozen at -40°C. Samples were made of puff pastry margarines belong to three different company. Free fatty acidity (%) and peroxide values were slightly increased with duration of shelf-life while the changes in the free fatty acid composition have remained at limited level. Spesific height that is an important quality criteria of baked puff pastries decreased gradually in all samples. …
Investigations On A Frost Hollow, İdri̇s Oğurlu, Mustafa Avci
Investigations On A Frost Hollow, İdri̇s Oğurlu, Mustafa Avci
Turkish Journal of Agriculture and Forestry
The study area, in Isparta-Pürenova, is covered by a plantation with seven-year-old Anatolian Black Pine Pinus nigra and Lebanon Cedar Cedrus libani trees. In the plantation which is subject to frost damage, there are widely failed planting patches. Since it has known that the fact that the area is a frost hole is the cause for failing with planting, in the study, effects of frost on different parts of the area and on both tree species were observed. For the purpose, several observations and measurings were carried out on transects covered failed areas as well as partly and fully successfull …
A Biological Research On The Single Cell Protein Yeast (Paprin) Grown On Liquid Paraffin Medium, Sahibe Çalişkaner, Yusuf Konca, Necmettin Ceylan, Muzaffer Çördük, Ramazan Demi̇rel, Koray Ceyhan, Mustafa Mamak
A Biological Research On The Single Cell Protein Yeast (Paprin) Grown On Liquid Paraffin Medium, Sahibe Çalişkaner, Yusuf Konca, Necmettin Ceylan, Muzaffer Çördük, Ramazan Demi̇rel, Koray Ceyhan, Mustafa Mamak
Turkish Journal of Agriculture and Forestry
The aim of this research is to find out the effects of yeast-ie one of the single cell protein, grown on liquid paraffin media (paprin) to be replaced instead of fish meal for protein quality and quantity. The experiment was designed according to Randomized Plots Design and applied on 3 generations using 72 Swiss Albino Laboratory Mice (12 male and 60 females) consisting 4 main groups with 3 replicates and 6 mice in each replicates. The experimental period of the first generation was 281 days, the second 218 days and the third 99 days. Dietary treatments were 0.0, 2.5, 5.0 …
Effect Of Phosphorus Fertilizers And Application Methods On The Yield Of Wheat Grown Under Dryland Conditions, Sabri̇ Gökmen, Özer Sencar
Effect Of Phosphorus Fertilizers And Application Methods On The Yield Of Wheat Grown Under Dryland Conditions, Sabri̇ Gökmen, Özer Sencar
Turkish Journal of Agriculture and Forestry
This study was conducted to investigate the efficiency of diammonium phosphate (DAP) and triple superphosphate (TSP) as phosphorus (P) sources and the effect of fertilizer application methods on the grain yield, yield components and other characteristics of winter wheat. The research was conducted in the ecological conditions of Tokat-Kazova during the 1990-1991 and 1991-1992 growing seasons. Bezostaja-I and Kirkpinar-79 cultivars were used as the plant materials. DAP and TSP fertilizers were applied according to four different methods, i. e., broadcasting, with seed, application 5 cm to the right and left of the seed and 5 cm below the seed. The …
Structural Relations Between Cotton Production And The Textile Industry In The Southeastern Anatolia Project (Gap) Region, Haydar Şengül, Onur Erkan
Structural Relations Between Cotton Production And The Textile Industry In The Southeastern Anatolia Project (Gap) Region, Haydar Şengül, Onur Erkan
Turkish Journal of Agriculture and Forestry
The structure and structural interdependency of the cotton and textile industries were analyzed using an input-output model in the Southeastern Anatolia Project (GAP) Region. GAP is the most comprehensive integrated regional development project ever carried out in Turkey. Data were obtained from surveys of 72 cotton farms and 103 textile companies. In the GAP Region, gross value added as a percentage of gross output was found to be 85 % for the cotton, 38 % for the ready-made, 35% for the spinning 34 % for the weaving and 25 % for the ginning sectors. As an indicator of labour productivity, …
Development And Fecundity Of Aphis Gossypii Glover (Homoptera: Aphididae) On Three Malvaceae Hosts, Serdar Satar, Ulrich Kersting, Nedi̇m Uygun
Development And Fecundity Of Aphis Gossypii Glover (Homoptera: Aphididae) On Three Malvaceae Hosts, Serdar Satar, Ulrich Kersting, Nedi̇m Uygun
Turkish Journal of Agriculture and Forestry
Aphis gossypii Glover (Homoptera, Aphididae) obtained from cotton fields near Adana in the east Mediterranean region of Turkey were colonized on Gossypium hirsutumL. Çukurova 1518 in a climatic room. The effect of host transfer from cotton to common mallow, Malva sylvestris L., and okra, Abelmoschus esculentus (L.) Moench 'Bamya 501', on performance of A. gossypii was studied at constant 25 ± 1°C, 60 ± 5 % relative humidity and 16 h of artificial light (5000 lux) in temperature cabinets. Three subsequent generations of A. gossypii from cotton were additionally tested on okra. Fecundity tables were constructed to compare the performance …
The Effect Of The Duration Of Alkali Treatment On The Solubility Of Polyoses, Mualla Balaban, Güneş Uçar
The Effect Of The Duration Of Alkali Treatment On The Solubility Of Polyoses, Mualla Balaban, Güneş Uçar
Turkish Journal of Agriculture and Forestry
Holocelluloses from the wood of pine and oak species growing naturally in Turkey were extracted with 5% KOH solution under specified conditions, and soluble polyoses and lignin were examined. The extractions of both pine and oak wood holocelluloses followed the mechanism of second order reaction. While the glucomannan of pine was poorly dissolvable during the extraction, xylan, the main polyose of hardwoods, was removed very efficiently upto almost 90 %. The solubility of xylane also obeyed the some kinehes. By the equation [ A ] 1- n - [ A 0 ] 1-n = ( n-1) kt, where n=2, for …
Effects Of Coating With Melamine Impregnated Papers On Technical Properties Of Particleboard, Gökay Nemli̇, Hülya Kalaycioğlu
Effects Of Coating With Melamine Impregnated Papers On Technical Properties Of Particleboard, Gökay Nemli̇, Hülya Kalaycioğlu
Turkish Journal of Agriculture and Forestry
Boards of 18 mm and 12 mm thickness with a specific gravity of 0.70 g/cm^3 were used in this study. Some of these boards were coated with melamine-impregnated papers. The bending strength, modülus of elasticity, bonding strength, screw holding and formaldehyde emission of boards stored for, in turn, one day, one week, one month and three months were recorded during the experiments. It was concluded that coating with melamine impregnated papers improved the mechanical properties of particleboards and that formaldehyde emission was remarkably reduced. Board thickness was found to have an effect on all mechanical properties of particleboard except for …
The Effects Of Grafting Times And Types On The Quality Of Grafted Vine Production Under The Nursery Conditions, Hüseyi̇n Çeli̇k, Ferhat Odabaş
The Effects Of Grafting Times And Types On The Quality Of Grafted Vine Production Under The Nursery Conditions, Hüseyi̇n Çeli̇k, Ferhat Odabaş
Turkish Journal of Agriculture and Forestry
In this study, carried out during 1992-1994, Aphonse Lavallee, Cardinal, Çavuş and Hafızali grape CVs were grafted on the Vitis berlandieri x Vitis riparia Kober 5BB and S04 rootstocks by omega and chip-budding grafting types under nursery conditions. The rootstock cuttings were planted into nursery plots in spring time and they were grafted on the August, 15; September, 15; October, 15 and November, 15; after the cuttings were fully rooted and had well-developed shoots. The shoot length and growth rate, number of roots and fresh root weight per vinegraft determined to the aim of establishing the effects of grafting time …
Use Of Peak Discharges In Flood Frequency Analyses, Fati̇h Topaloğlu, Ali̇ Yücel, Kazim Tülücü, Mahmut Çeti̇n
Use Of Peak Discharges In Flood Frequency Analyses, Fati̇h Topaloğlu, Ali̇ Yücel, Kazim Tülücü, Mahmut Çeti̇n
Turkish Journal of Agriculture and Forestry
Hydrological data such as daily, monthly, and yearly peak discharge rates, ... etc., are being used in flood frequency analyses. Because the phenomena have inherent random character, the value to be observed in the future can only be determined by probabilistical and statistical laws. This kind of data should show independent, homogeneous and random behavior so that it can be used in the simulation and frequency analyses. In this study, initial stage studies needed to be done and some simple basic statistical analysis techniques have been examined so that observed discharge data in an example river basin could be used …
Determination Of Some Cytological Characters Of Wild Orchardgrass (Dactylis Glomerata L.) Growing In Erzurum District, Meti̇n Tosun, İlknur Akgün, Sevi̇m Sağsöz
Determination Of Some Cytological Characters Of Wild Orchardgrass (Dactylis Glomerata L.) Growing In Erzurum District, Meti̇n Tosun, İlknur Akgün, Sevi̇m Sağsöz
Turkish Journal of Agriculture and Forestry
In this study, some cytological characters of orchardgrass were examined naturally growing in Erzurum. Plants assessed for their chromosome number were tetraploid (2n=28). In metaphase I stage the most prevalent pairing was bivalents (avg. 8.37). This was followed by quadrivalent (avg. 2.81), univalent (avg. 0.04) and trivalent (avg. 0.015) pairings. All combinations of bivalents and quadrivalents were recorded. In most of anaphase l cells examined chromosomes distribution to poles were even (14: l4), however some cells had laggings and bridges. In addition, 95. 17% of observed tetrads had no micronucleus.
The Effect Of Interesterification Reactions On The Tocopherols And The Sterols In Fats, Azi̇z Teki̇n, Muammer Kayahan
The Effect Of Interesterification Reactions On The Tocopherols And The Sterols In Fats, Azi̇z Teki̇n, Muammer Kayahan
Turkish Journal of Agriculture and Forestry
In this study, interesterification which has been used in developed countries for years and tried in Turkey recently, was applied to a sunflower oil and beef tallow blend (80:20). 25 sample fats were obtained by applying interestification at different temperatures and times by adding 0.3% sodium methoxide. The changes in the tocopherols and sterols of these fats were investigated. It was determined that the reaction was completed at 70°C in 45 minites and at higher temperatures and longer times using lipase hydrolysis. In conclusion tocopherols and sterols were esterified more quickly as time and temperature increased. Therefore, they were more …
A Study Of The Propagation Of The Hardwood Cuttings Of Some Rose Hips, Sezai̇ Erci̇şli̇, Muharrem Güleryüz
A Study Of The Propagation Of The Hardwood Cuttings Of Some Rose Hips, Sezai̇ Erci̇şli̇, Muharrem Güleryüz
Turkish Journal of Agriculture and Forestry
In this study, the rooting abilities of hardwood cuttings from ten rose-hip types collected in Gümüşhane in 1994-1995 were evaluated. The cuttings, taken in November, December and January, were planted in a perlit medium under a mist unit. In order to stimulate rooting, IBA doses of 1000, 2000, and 4000 ppm were used. The results showed that type 29-To-16 of Rosa canina had the highest rooting rate (86.25%), while type 29-Ke-27 of Rosa foetida had the lowest (3.33%). According to the average values of all the types, the best dose of IBA was 2000 ppm, and the best rooting time …
The Effect Of Water Content On The Penetration Resistance Of Different Soils, And Regression Models, Cevdet Şeker
The Effect Of Water Content On The Penetration Resistance Of Different Soils, And Regression Models, Cevdet Şeker
Turkish Journal of Agriculture and Forestry
The purposes of this study were to determine the relationships between soil water content and soil penetration resistance, and to develop regression models for comparing penetration resistance in different soils. A field study was conducted on four different soils in Entisol on the Konya plain. Significant relationships were found between soil water content and soil penetration resistance (r^2= 0.77 to 0.99). The results of regression analysis showed that the regression equation was Y=a+bX^3, in which Y was penetration resistance (kPa) and X was soil water content (%), a and b were constants changing with soil and different layers of the …
The Effect Of Cutting On The Yield And Yield Components Of Bread Wheat (Triticum Aestivum L.) Cultivars, A. Esen Çelen, Hi̇kmet Soya
The Effect Of Cutting On The Yield And Yield Components Of Bread Wheat (Triticum Aestivum L.) Cultivars, A. Esen Çelen, Hi̇kmet Soya
Turkish Journal of Agriculture and Forestry
In the research conducted in the fields of Field Crops Department of Faculty of Agriculture of Ege University, Bornova, İzmir, Turkey in 1993-94 and 1994-95, the effects of cutting treatments [a. uncut control, b. cutting at Zadoks stage 25 (main stem and 5 tillers), c. cutting at Zadoks stage 30 (at the end of tillering, pseudostem erection), and d. cutting at Zadoks stage 31 (first node detectable) ] on the seed yield and some yield components of two bread wheat cultivars (Cumhuriyet-75 and Menemen-88) were investigated. There weren't significant differences on the spike numbers per square meter, seed numbers per …
Karyotype Analysis In Hexaploid Triticale, Meti̇n Tosun
Karyotype Analysis In Hexaploid Triticale, Meti̇n Tosun
Turkish Journal of Agriculture and Forestry
In this study, morphology of chromosomes was determined via karyotype and idiogram analysis in Nutria 7272 line of hexaploid (2n=42) triticale obtained from CIMMYT. On the bases of the presence or absence of satellites and the arm ratio, the chromosome complement was divided into four groups; satellited, median, submedian and subterminal chromosomes. Of the 42 chromosomes present in Nutria 7272 karyotype, 4 were satellited, 14 median, 18 submedian and 6 subterminal. The chromosome length and the arm ratio were 4.844 \mu (M_7) - 8.066 \mu (SM_1) and 1.091 (M_7) - 2.125 (SM_1), respectively. The satellite length of SAT_1 and SAT_2 …
Effects Of Surface Coating Materials On The Physical And Mechanical Properties Of Particleboard Used For Kitchen Cabinets And Surface Quality Properties: Part 1. Effects Of Physical Properties, Turgay Özdemi̇r, Hülya Kalaycioğlu, Abdulkadi̇r Malkoçoğlu, Gökay Nemli̇
Effects Of Surface Coating Materials On The Physical And Mechanical Properties Of Particleboard Used For Kitchen Cabinets And Surface Quality Properties: Part 1. Effects Of Physical Properties, Turgay Özdemi̇r, Hülya Kalaycioğlu, Abdulkadi̇r Malkoçoğlu, Gökay Nemli̇
Turkish Journal of Agriculture and Forestry
In this study, the effects of surface coating materials on the physical and mechanical properties of particleboard used for kitchen cabinets and surface quality properties were investigated. But, in this part, effects of these on the physical properties on particleboard were investigated. 18 mm thickness particleboard were obtained from four different sources belong to private sector for producing test samples. Coated and varnished veneer , lacquer coating, continious pressure laminate, high pressure laminate and polivinylchloride coating were applied on these samples. The following were recorded during the experiments: Spesific gravity, water absorbtion and thickness swelling. As a result of this …
The Determination Of Fitness Of Various Isotherm Equations To Moisture Sorption Data Of Kırık, Lancer Barley, Rye, Oat And Corn, Fati̇h Ertugay, Muharrem Certel
The Determination Of Fitness Of Various Isotherm Equations To Moisture Sorption Data Of Kırık, Lancer Barley, Rye, Oat And Corn, Fati̇h Ertugay, Muharrem Certel
Turkish Journal of Agriculture and Forestry
In this research, the fitness of Halsey, Henderson, Harkins-Jura, BET, Smith and Freundlich isotherm equations to moisture sorption data at 20, 25, 35, 50 and 70°C of Kırık, Lancer, barley, rye, oat and corn were investigated. Isotherm equations, fitted quite well to obtained sorption data, were determined and parameter constants of the equations were calculated by regression using the lineer form of the isotherm equation. The best fitness was seen in Henderson equation as low fitness was seen for BET equation.
The Effects Of Sowing Date And Row Spacing On Yield And Quality Of Some Sugarbeet (Beta Vulgaris L.) Varieties In Hatay Ecological Conditions, Mehmet Emi̇n Çalişkan, Necmi̇ İşler, Erol Günel, Mutlu Buket Güler
The Effects Of Sowing Date And Row Spacing On Yield And Quality Of Some Sugarbeet (Beta Vulgaris L.) Varieties In Hatay Ecological Conditions, Mehmet Emi̇n Çalişkan, Necmi̇ İşler, Erol Günel, Mutlu Buket Güler
Turkish Journal of Agriculture and Forestry
The effects of different sowing dates (1st February and 1st March) and row spacings (30, 45 and 60 cm) on yield and quality characteristics of four sugarbeet cvs. (Evita, Sonja, Fiona and Anadolumono) were studied in Hatay ecological conditions in 1996 and 1997. Delayed sowings affected negatively all the yield and quality characteristics, and due to one month delaying of sowing root and sucrose yield decreased 8.06 % and 8.64% in 1996, and 37.7% and 40.4% in 1997, respectively. The highest root and sucrose yields obtained from 45 cm row spacing in 1996 (47.77 and 8.14 t/ha, resp.) and from …
A Study On The Relationship Of Yield With Stability In Lentil, Meti̇n Altinbaş, Bahatti̇n Tanyolaç
A Study On The Relationship Of Yield With Stability In Lentil, Meti̇n Altinbaş, Bahatti̇n Tanyolaç
Turkish Journal of Agriculture and Forestry
Two lentil ( Lens culinaris medic. ) populations, one of them were of large-seeded genotypes and other one were small-seeded genotypes, were tested at one location in 1990 and at two locations in the years of 1991 and 1992 and some stability statistics were estimated for grain yield. The relationship between yield and stability were studied in both populations using the simple correlations among mean yields and six stability parameters. The significant correlations between mean yield and stability statistics (b, r^2, s^2_d, W^2, \sigma^2) except S^2 occurred in large-seeded genotypes, while all stability parameters were not significantly correlated with mean …
Autocatalyzed Ethanol-Water Pulping Of Wheat (Triticum Aestivum L.) Straw, Hüseyi̇n Kirci, Mehmet Akgül
Autocatalyzed Ethanol-Water Pulping Of Wheat (Triticum Aestivum L.) Straw, Hüseyi̇n Kirci, Mehmet Akgül
Turkish Journal of Agriculture and Forestry
This study aimed possibility of organosolv pulp production by adding to the pulping liquor without any inorganic catalyzes from the wheat straw which is known as an important raw-material for pulp production in Turkey. To obtain optimum pulping conditions ethanol ratio to pulping liquor, temperature and cooking time at maximum temperature were changed systematically and 18 pulping trial were made. The results showed that the pulping temperature at 170ºC was critical for delignification and fiber liberation. Under the limit of 170ºC sufficient delignification and chemical defibration were not observed. However, fast fiber liberation occured by applying 180-190ºC pulping temperatures. Increasing …
Determination Of Effective Heat Summation Reqirement Of Stone Fruits Grown In Ankaraconditions, Hülya Ünver, Mensure Çeli̇k
Determination Of Effective Heat Summation Reqirement Of Stone Fruits Grown In Ankaraconditions, Hülya Ünver, Mensure Çeli̇k
Turkish Journal of Agriculture and Forestry
This experiment was carried out to determine heat accumulation requirements of stone fruits. 7 o C for stone fruits was considered as critical temperature (base temperature) to calculate effective heat summation in degree-days or heat units. The length of growth periods in Ankara were 258 days in 1992 and 267 days in 1993. Effective heat summations in Ankara were 2307 (1992) and 2428 (1993) degree-days above 7 o C. It can be said that the effective heat summation of Ankara is enough of for commercial growing of stone fruit cultivars studied in this experiment.
The Relationships Among Grain Yield And Some Yield Components In Tir Wheat, Fahri Sönmez, Mehmet Ülker, Nuri Yilmaz, Hatice Ege, Betül Bürün, Rüstem Apak
The Relationships Among Grain Yield And Some Yield Components In Tir Wheat, Fahri Sönmez, Mehmet Ülker, Nuri Yilmaz, Hatice Ege, Betül Bürün, Rüstem Apak
Turkish Journal of Agriculture and Forestry
Field experiments were conducted in 1994 and 1995 in Van in order to study the relationships between grain yield and yield componets, and the interrelationships among these yield components and other characteristics in Tir wheat. In this research, heading duration, the number of spikes per m 2 , grain filling period, the number of grain per spike, grain weight, and grain yield were studied. Direct and indirect effects of the yield components (the number of spikes per m 2 , the number of grain per spike, and grain weight) on grain yield were found by Path coefficient analysis. Direct and …
The Possibilities At Entering Crop Rotation System Of Certain Annual Legume Plants In Antalya, Sadık Çakmakçi, Semiha Çeçen
The Possibilities At Entering Crop Rotation System Of Certain Annual Legume Plants In Antalya, Sadık Çakmakçi, Semiha Çeçen
Turkish Journal of Agriculture and Forestry
The research was done during 1994-95 and 1995-96 planting season with 3 replications in randomized complete block design, in Antalya to find the possibility of entering crop rotation system for the forage yield of 9 annual legume plant species. In this work, common vetch, hungarian vetch, hairy vetch, bitter vetch, field pea, chickling vetch, fenugreek, persian clover and berseem plant species were used. For every plant species plant dry matters obtained during harvesting season and days to harvesting stage were compared. As a result, for the dry matter yield, chickling vetch, hungarian vetch and fenugreek plant species gained the highest …
An Investigation On Pollen Viability, Germination And Tube Growth In Some Stone Fruits, İbrahi̇m Bolat, Lütfi̇ Pirlak
An Investigation On Pollen Viability, Germination And Tube Growth In Some Stone Fruits, İbrahi̇m Bolat, Lütfi̇ Pirlak
Turkish Journal of Agriculture and Forestry
In this study, the viability, germination and tube growth of pollen from apricot ( Prunus armeniaca L.) (in five cultivars), sweet cherry ( Prunus avium L). (in four cultivars) and sour cherry ( Prunus cerasus L.) (in one cultivar) were investigated. Three stain tests (TTC, IKI and safranin) and two in vitrogermination tests (hanging drop and agar-plate) were used to estimate pollen viability and germination in these species. The viability, germination and tube growth of pollens varied significantly according to species, cultivars and tests. However, pollen viability in the safranin test was generally higher than in the others. The highest …
Changes In Nitrogen Status Of Soybean Under Influence Of Symbiotically Fixed And Bound Nitrogen, A. G. Gadimov, P. M. Safaraliev, C. N. Troistskaya, Surhay Allahverdiev, S. Nafi̇si̇
Changes In Nitrogen Status Of Soybean Under Influence Of Symbiotically Fixed And Bound Nitrogen, A. G. Gadimov, P. M. Safaraliev, C. N. Troistskaya, Surhay Allahverdiev, S. Nafi̇si̇
Turkish Journal of Agriculture and Forestry
The contribution of different nitrogen sources (nitrate 15 N-NO 3 and symbiotic N-N 2 ) to the nitrogen status of soybean in ontogenesis was studied. Nitrate was assimilated effectively during the vegetative growth, whereas later on the nitrogen-fixation by root nodules became the basic source of nitrogen. The applying of a low dose of nitrate (22.2 mg N/plant) increased the total nitrogen content in the plant and did not depress the nitrogen fixation. Distribution of the symbiotic and nitrate nitrogen among organs of soybean was proportional.
Reduction By Natural Resin Of Water Uptake In Various Wood Species, Ahmet Ali̇ Var, Erol Öktem
Reduction By Natural Resin Of Water Uptake In Various Wood Species, Ahmet Ali̇ Var, Erol Öktem
Turkish Journal of Agriculture and Forestry
Straight and clear sapwood specimens of 3x3x1.5 cm were prepared from spruce ( Picea orientalis L.), pine ( Pinus sylvestris L.), beech ( Fagus orientalis L.), and alder ( Alnus glutinosa Geartn. L.). The specimens were impregnated in solution consisting of 10% natural resin and 90% cellulosic thinner, with dipping for periods of 1/3, 3, and 24 hours. Test and control specimens were soaked in distilled water for periods of 1/4, 1, 4, 16, and of 24 hours. Both tests were carried out under room conditions: 20±2°C temperature, 65±5 percent relative humidity and atmospherical pressure. Result showed that there were …