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Articles 1 - 30 of 49
Full-Text Articles in Agriculture
Genetic Transformation Of Citrus Paradisi With Antisense And Untranslatable Rna-Dependent Rna Polymerase Genes Of Citrus Tristeza Closterovirus, Bayram Çevi̇k, Richard F. Lee, Charles L. Niblett
Genetic Transformation Of Citrus Paradisi With Antisense And Untranslatable Rna-Dependent Rna Polymerase Genes Of Citrus Tristeza Closterovirus, Bayram Çevi̇k, Richard F. Lee, Charles L. Niblett
Turkish Journal of Agriculture and Forestry
Protein and RNA-mediated forms of pathogen-derived resistance (PDR) have been developed against many viruses in different plants. However, no resistance has been reported against Citrus tristeza virus (CTV), a closterovirus, in Citrus species transformed with coat protein genes or other sequences of CTV. The successful use of replication-associated genes in RNA-mediated resistance in other crops prompted the use of the RNA-dependent RNA polymerase (RdRp) gene of CTV for the development of RNA-mediated PDR in Citrus. The RdRP gene was amplified from CTV isolate DPI3800 from Florida and used to generate antisense (RdRp-AS) and untranslatable (RdRp-UT) constructs with point mutation consecutive …
Impact Of Impregnation With Imersol-Aqua On The Yellow Color Tone Of Some Woods And Varnishes, Mustafa Hi̇lmi̇ Çolakoğlu
Impact Of Impregnation With Imersol-Aqua On The Yellow Color Tone Of Some Woods And Varnishes, Mustafa Hi̇lmi̇ Çolakoğlu
Turkish Journal of Agriculture and Forestry
This study was performed to determine the effects of impregnation on the yellow color tone (YCT) of some woods and varnishes. For this purpose, the test specimens prepared from Oriental beech (Fagus orientalis Lipsky) and oak (Quercus petrea Liebl.) according to ASTM D 358 were impregnated with Imersol-Aqua according to ASTM D 1413-99 and the manufacturer's instructions by short-term, medium-term, and long-term dipping, and were then coated with synthetic, acrylic, waterborne, and polyurethane varnishes according to ASTM D 3023. The YCT of test specimens after the varnishing process was determined according to ASTM D 2244-02. As a result, the highest …
Determination Of The Apomictic Fruit Set Ratio In Some Turkish Walnut (Juglans Regia L.) Genotypes, Beki̇r Şan, Hati̇ce Dumanoğlu
Determination Of The Apomictic Fruit Set Ratio In Some Turkish Walnut (Juglans Regia L.) Genotypes, Beki̇r Şan, Hati̇ce Dumanoğlu
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the amount of apomictic fruit set in 10 Turkish walnut (Juglans regia L.) genotypes in 2001, 2002 and 2003. Yalova-1, Şebin, Bilecik, KR-1, KR-2, Şen-2, 07-KOR-l, Tokat-1, Kaman-1 and Kaman-5 cultivars and selections were used in the experiment. Female flowers were bagged and/or pollinated with pollen of the apple cv. 'Golden Delicious' (Malus x domestica Borkh.), and the apomictic fruit set was determined 8 weeks after anthesis. The percentage of apomictic fruit set without pollination ranged from 0.5% to 1.6% in 5 walnut genotypes, namely Yalova-1, Bilecik, 07-KOR-l, Tokat-1 and Kaman-1, in the …
Deficit Irrigation Analysis Of Red Pepper (Capsicum Annum L.) Using The Mathematical Optimisation Method, Cafer Gençoğlan, Serpi̇l Gençoğlan, Cuma Akbay, İsmet Boz
Deficit Irrigation Analysis Of Red Pepper (Capsicum Annum L.) Using The Mathematical Optimisation Method, Cafer Gençoğlan, Serpi̇l Gençoğlan, Cuma Akbay, İsmet Boz
Turkish Journal of Agriculture and Forestry
The objectives of this study were to analyse deficit irrigation with the mathematical optimisation method using the water-yield relationship and cost functions of red pepper, and to determine alternative deficit irrigation water levels. For this purpose, the effect of 5 different irrigation levels (I_1, I_2, I_3, I_4, and I_5) on dry yield (DY) was determined using a line source sprinkler irrigation system in Kahramanmaraş, Turkey in 1999 and 2000. The average water amounts applied with I_1 (non-water stress treatment) and I_5 (water stress treatment) for the 2 years were 913 and 296 mm, and I_2, I_3, and I_4 varied between …
Effects Of Different Nitrogen Doses And Row Spacing Applications On Yield And Quality Of Oenothera Biennis L. Grown In Irrigated Lowland And Unirrigated Dryland Conditions, Nazim Şekeroğlu, Menşure Özgüven
Effects Of Different Nitrogen Doses And Row Spacing Applications On Yield And Quality Of Oenothera Biennis L. Grown In Irrigated Lowland And Unirrigated Dryland Conditions, Nazim Şekeroğlu, Menşure Özgüven
Turkish Journal of Agriculture and Forestry
Common evening primrose (Oenothera biennis L., Onagraceae) is a biennial herbaceous forb. It is commercially cultivated in over 15 countries for its seed oil, which contains the essential fatty acids, linoleic and gamma-linolenic acid. The present study was carried out to determine the effects of different nitrogen doses (0, 60, 120 and 180 kg ha^{-1}) and row spacing applications (20, 40 and 60 cm) on yield and quality of Oenothera biennis L. grown in irrigated lowland and unirrigated dryland in the Gukurova conditions region in 2000 and 2001. The field trials were arranged in split-split-plot design with 3 replicates. Some …
Saturated Hydraulic Conductivity Variation In Cultivated And Virgin Soils, Teki̇n Özteki̇n, Sabi̇t Erşahi̇n
Saturated Hydraulic Conductivity Variation In Cultivated And Virgin Soils, Teki̇n Özteki̇n, Sabi̇t Erşahi̇n
Turkish Journal of Agriculture and Forestry
Variation of saturated hydraulic conductivity (K_s) values of soils under diverse management practices may be needed to determine the required sample number, sample size, and chose suitable sample scheme for characterize the K_s values used in water flow and solute transport modelling studies. The purpose of this study was to examine the variability in K_s and try to understand some part of the determinism of this variability in virgin and adjacent cultivated field using 36 undisturbed soil samples from each location with 0.5-m grid space. K_s was measured with 100 cm^3 undisturbed soil cores in laboratory using falling or constant …
Genotypic Variation In Tolerance To Boron Toxicity In 70 Durum Wheat Genotypes, Ayfer A. Torun, Ati̇lla Yazici, Hali̇l Erdem, İsmai̇l Çakmak
Genotypic Variation In Tolerance To Boron Toxicity In 70 Durum Wheat Genotypes, Ayfer A. Torun, Ati̇lla Yazici, Hali̇l Erdem, İsmai̇l Çakmak
Turkish Journal of Agriculture and Forestry
By using 70 durum wheat (Triticum durum) genotypes, a greenhouse experiment has been carried out to study genotypic variation in tolerance to boron (B) toxicity in soil. Plants were grown in a soil containing 12 mg extractable B kg^{-1} soil and treated additionally with (+B: 25 mg kg^{-1} soil) and without B (-B: 0 mg B kg^{-1} soil). Following 30 days of growth, only shoots have been harvested and analyzed for dry matter production and shoot concentrations of B. There was a large genotypic variation in tolerance to B toxicity based on the severity of leaf symptoms and decreases in …
Developing Alternative Wood Harvesting Strategies With Linear Programming In Preparing Forest Management Plans, Emi̇n Zeki̇ Başkent, Sedat Keleş
Developing Alternative Wood Harvesting Strategies With Linear Programming In Preparing Forest Management Plans, Emi̇n Zeki̇ Başkent, Sedat Keleş
Turkish Journal of Agriculture and Forestry
In this paper, the process of developing alternative wood harvesting strategies in forest management planning is presented. Alternative wood harvesting strategies based on linear programming (LP) include a planning horizon of 100 years, an objective of the maximization of net present value (NPV) and various constraints such as classical volume control (even flow) and wood assortments. Model outputs are presented and discussed along with NPVs and amounts of wood assortments by alternative wood harvesting strategies consisting of various discount rates and wood assortments.
Effect Of Sowing Date And Limited Irrigation On The Seed Yield And Quality Of Dill (Anethum Graveolens L.), Saeid Zehtab-Salmasi, Kazem Ghassemi-Golez, Sajad Moghbeli
Effect Of Sowing Date And Limited Irrigation On The Seed Yield And Quality Of Dill (Anethum Graveolens L.), Saeid Zehtab-Salmasi, Kazem Ghassemi-Golez, Sajad Moghbeli
Turkish Journal of Agriculture and Forestry
Field and laboratory experiments were carried out in order to investigate the influence of 3 sowing dates and 4 irrigation disruption treatments at different growth stages on the seed yield and quality of dill (Anethum graveolens L.). The results showed that for successful seed production dill must be sown in early spring (3 to 18 April), since there was no significant difference in seed yield between the sowing dates of 3 April (S_1) and 18 April (S_2). Seeds from S_1 sowing had a higher percentage of germination after accelerated ageing (AA), a faster germination rate and a heavier seedling dry …
Use Of A Crop Water Stress Index For Scheduling The Irrigation Of Sunflower (Helianthus Annuus L.), Tolga Erdem, Yeşi̇m Erdem, A. Hali̇m Orta, Hakan Okursoy
Use Of A Crop Water Stress Index For Scheduling The Irrigation Of Sunflower (Helianthus Annuus L.), Tolga Erdem, Yeşi̇m Erdem, A. Hali̇m Orta, Hakan Okursoy
Turkish Journal of Agriculture and Forestry
This study was designed to evaluate different threshold crop water stress index (CWSI) values to schedule irrigation for sunflower (Helianthus annuus L.) grown under furrow irrigation. Irrigations were started when CWSI values reached 0.2, 0.4, 0.6, 0.8 and 1.0 (non-irrigation). The CWSI values were computed from measurements of canopy temperature, air temperature and atmospheric vapor pressure deficit. Total irrigation water amounts of 679, 584, 470 and 227 mm were applied to the T_{0.2}, T_{0.4}, T_{0.6} and T_{0.8} treatments, respectively. The maximum seasonal evapotranspiration (ET), 809 mm was measured from the T_{0.2} treatment. Irrigation levels significantly affected seed yield. Although the …
Comparison Of Different Irrigation Methods Based On The Parametric Evaluation Approach, Orhan Dengi̇z
Comparison Of Different Irrigation Methods Based On The Parametric Evaluation Approach, Orhan Dengi̇z
Turkish Journal of Agriculture and Forestry
The main objective of this research is to compare two different irrigation methods according to parametric evaluation system in the Field Plants Central Research Institute-Ikizce Research Farm's soils located in southern Ankara. Soil properties of the study area including texture, depth, EC, drainage, carbonate content and slope were derived from a detailed soil map scaled 1/5000. After analyzing and evaluating soil properties using geographic information system techniques, gravity and drop irrigation suitability maps were generated. Results showed that 13.1% of the study area was highly suitable for surface and gravity irrigation methods, whereas 51.2% of the study area was highly …
Effects Of Inoculation With Rhizobium On Seed Yield And Yield Components Of Common Vetch (Vicia Sativa L.), Sebahatti̇n Albayrak, Cafer Sirri Sevi̇may, Özgür Töngel
Effects Of Inoculation With Rhizobium On Seed Yield And Yield Components Of Common Vetch (Vicia Sativa L.), Sebahatti̇n Albayrak, Cafer Sirri Sevi̇may, Özgür Töngel
Turkish Journal of Agriculture and Forestry
The effects of inoculation with Rhizobium leguminosarum on seed yield and yield components of common vetch (Vicia sativa L.) were evaluated under Black Sea Coastal Region conditions, Turkey, in the 2001-2002 and 2002-2003 growing seasons using common vetch cultivars Kubilay, Ürem, Karaelçi, Uludağ, Emir, Çubuk and Nilüfer. The experiment was established as a split block design with 3 replications. Inoculation increased seed yield and all yield components of common vetch cultivars. It was observed that inoculated common vetch cultivars gave higher biological yield (8.5%), seed yield (7.6%), straw yield (10.4%), pod length (25.5%), number of seed per pod (16.2%), number …
Effects Of Nacl On The Germination, Seedling Growth And Water Uptake Of Triticale, Mehmet Atak, Mehmet Demi̇r Kaya, Gamze Kaya, Yakup Çikili, Cemaletti̇n Yaşar Çi̇ftçi̇
Effects Of Nacl On The Germination, Seedling Growth And Water Uptake Of Triticale, Mehmet Atak, Mehmet Demi̇r Kaya, Gamze Kaya, Yakup Çikili, Cemaletti̇n Yaşar Çi̇ftçi̇
Turkish Journal of Agriculture and Forestry
The lack of information about the effects of salinity on vegetative growth of triticale prompted us to study the salt tolerance levels of 3 newly registered cultivars, Karma-2000, Presto, and Tatlıcak-97. Moreover, the relative importance of the osmotic or toxic effects of NaCl on seed germination are not clear in triticale. In this study, germination percentage, seedling fresh and dry weight and water uptake of the seeds of 3 triticale cultivars were determined under various salt (NaCl) stresses with electrical conductivities of 2.4, 4.2, 5.9, 7.7, 10.6 and 13.2 dS m^{-1}. Roots and shoots were analyzed for uptake of Na^+ …
Study On Vertical And Lateral Leaching Of Nitrate From A Wheat Field In China, Md. Toufiq Iqbal
Study On Vertical And Lateral Leaching Of Nitrate From A Wheat Field In China, Md. Toufiq Iqbal
Turkish Journal of Agriculture and Forestry
Vertical and lateral leaching of nitrate from a wheat field was studied through one season in a field in China by applying increasing amount of N fertilizers (e.g. 90, 180, 270 and 360 kg ha^{-1}). Results showed that nitrate leaching was the dominating way of nitrate loss from wheat land during the first two month after sowing seeds. After irrigation, the nitrate concentration in the leachate of 30 cm soil layer was higher than that of 60 cm, while the concentration of nitrate leaching at the five N treatments through the two depth soil layer came into the same level …
Use Of Corine Methodology To Assess Soil Erosion Risk In The Semi-Arid Area Of Beypazari, Ankara, İlhami̇ Bayrami̇n, Günay Erpul, Hakki Emrah Erdoğan
Use Of Corine Methodology To Assess Soil Erosion Risk In The Semi-Arid Area Of Beypazari, Ankara, İlhami̇ Bayrami̇n, Günay Erpul, Hakki Emrah Erdoğan
Turkish Journal of Agriculture and Forestry
Soil erosion is one of the major threats to the conservation of soil and water resources in the semi-arid and arid regions of Turkey. Therefore, there is a need to accurately assess soil erosion and accordingly determine the specific control activities adaptable to these conditions. Using the daily rainfall amounts recorded from 1958 to 2003 from 11 climate stations by the Turkish Meteorological Service in the semi-arid area of Beypazari, Ankara, Turkey, 5 different procedures of calculating the Modified Fournier Index (MFI) were performed to obtain the effect of rainfall variability and incidence of extreme storms on assessing 'Actual Soil …
The Effect Of Tying And Wrapping Materials And Their Color On Budding Success In Kiwifruit, Hamdi̇ Zengi̇nbal, Hüseyi̇n Çeli̇k, Muharrem Özcan
The Effect Of Tying And Wrapping Materials And Their Color On Budding Success In Kiwifruit, Hamdi̇ Zengi̇nbal, Hüseyi̇n Çeli̇k, Muharrem Özcan
Turkish Journal of Agriculture and Forestry
We studied the effect of tying and wrapping materials and their color on budding success in kiwifruit. The work was done in the open field during 2002-2003. Three-year-old, gallon container grown Hayward seedlings were chip-budded with Hayward chip-bud sticks in the first quarter of May. Raffia (black), cannabis fiber, leathery polyethylene band (white), soft rubbery polyethylene tape (white), paper tape, cotton yarn and plastic string (white) were used as tying and wrapping material in the first experiment. Green, red, black and white raffia was used as wrapping material in the second experiment. In the first trial, the soft rubbery plastic …
The Replication Of The Purple-Flowered Rhododendron (Rhododendron Ponticum L.) By Seed And Chances Of Survival In Replanting In Different Media, Mustafa Var, Deryanur Di̇nçer
The Replication Of The Purple-Flowered Rhododendron (Rhododendron Ponticum L.) By Seed And Chances Of Survival In Replanting In Different Media, Mustafa Var, Deryanur Di̇nçer
Turkish Journal of Agriculture and Forestry
This study investigates the germination, replanting and survival of Rhododendron ponticum, a species native to Turkey, in different media. The conditions of the germination medium were first investigated and the seedlings obtained were applied as a first replicate in a peat medium, and at the end of 4 months a second replicate in 7 different media was used to examine their development and survival in these media. The data obtained were then compared to the data obtained from soil analysis and their relations were outlined along with statistical considerations. According to the findings, an efficient germination was observed when the …
Potassium Exchange Isotherms As A Plant Availability Index In Selected Calcareous Soils Of Western Azarbaijan Province, Iran, Abbas Samadi
Potassium Exchange Isotherms As A Plant Availability Index In Selected Calcareous Soils Of Western Azarbaijan Province, Iran, Abbas Samadi
Turkish Journal of Agriculture and Forestry
Potassium (K) exchange isotherms (quantity-intensity technique, Q/I) and K values derived from the Q-I relationship provide information about soil K availability. This investigation was conducted to study the relationships among K Q/I parameters, available K extracted by 1 N NH_4AOc (exchangeable K plus solution K), potassium saturation percentage (K-index, %), and the properties of 6 different calcareous agricultural soils. In addition, the relationship of tomato plant yield response to the K requirement test based on K exchange isotherms was investigated. The Q/I parameters included readily exchangeable K (\DeltaK^0), specific K sites (K_X), linear potential buffering capacity (PBC^K), and energy of …
Organic Acid Pulping Of Rice Straw. I: Cooking, M. Sarwar Jahan, Z. Z. Lee, Yongcan Jin
Organic Acid Pulping Of Rice Straw. I: Cooking, M. Sarwar Jahan, Z. Z. Lee, Yongcan Jin
Turkish Journal of Agriculture and Forestry
Acetic acid or formic acid treatment of rice straw with the variation of reaction variables, namely acid concentration, catalyst (HCl or H_2SO_4) concentration, reaction time, temperature and liquor ratio, was investigated to ascertain effects on the dissolution of hemicellulose, which facilitates the dissolution of lignin during alkaline extraction or peroxyacid treatment and improved the drainability of straw pulp. Maximum pentosan dissolution was observed in 80% acetic acid with 0.6% H_2SO_4 catalyst at 80 °C for 120 min. Acetic acid dissolved pentosan more slowly than formic acid. The catalytic activity of H_2SO_4 was higher than that of HCl with respect to …
Determination Of Crop Water Stress Index For Irrigation Scheduling Of Bean (Phaseolus Vulgaris L.), Yeşi̇m Erdem, Sezen Şehi̇rali̇, Tolga Erdem, Di̇nçer Kenar
Determination Of Crop Water Stress Index For Irrigation Scheduling Of Bean (Phaseolus Vulgaris L.), Yeşi̇m Erdem, Sezen Şehi̇rali̇, Tolga Erdem, Di̇nçer Kenar
Turkish Journal of Agriculture and Forestry
This study was conducted to determine the relationship between the canopy-air temperature differential and the vapor pressure deficit (VPD), which can be used to quantify the crop water stress index (CWSI) under fully irrigated (100%) and maximum water stress (0%) conditions of trickle irrigated bean. The effects of 5 irrigation levels (100%, 75%, 50%, 25%, and 0% replenishment of soil water depleted when 50% of available soil moisture was consumed in the 0.60 m soil profile depth of fully irrigated treatment) on seed yields and resulting CWSIs calculated using the empirical approach were also investigated. The highest yield and water …
Effects Of Some Plant Materials On Phytophthora Blight (Phytophthora Capsici Leon.) Of Pepper, Fi̇kret Demi̇rci̇, F. Sara Dolar
Effects Of Some Plant Materials On Phytophthora Blight (Phytophthora Capsici Leon.) Of Pepper, Fi̇kret Demi̇rci̇, F. Sara Dolar
Turkish Journal of Agriculture and Forestry
Effects of dried garlic, peppermint, cabbage, lentil, alfalfa, onion, radish, and garden cress plant materials on Phytophthora blight (Phytophthora capsici Leon.) of pepper were determined, in both in vitro and in vivo conditions. Extracts of the plant materials were used in vitro. The plant materials were extracted in ethanol and were added to corn meal agar (CMA) at 5 and 10 µg ml^{-1}. The extracts of alfalfa, garlic, cabbage, and peppermint reduced colony diameter of P. capsici on corn meal agar between 3.46% and 13.73%, whereas mycelial growth of P. capsici was increased by onion, radish, garden cress, and lentil …
Changes In Some Quality Parameters Of The Perfect Delight Nectarine Cultivar During Cold Storage And Shelf Life, Murat Çeli̇k, Ahmet Erhan Özdemi̇r, Eli̇f Ertürk
Changes In Some Quality Parameters Of The Perfect Delight Nectarine Cultivar During Cold Storage And Shelf Life, Murat Çeli̇k, Ahmet Erhan Özdemi̇r, Eli̇f Ertürk
Turkish Journal of Agriculture and Forestry
The objective of this study was to determine storage and shelf life periods of Perfect Delight nectarines grown in Mersin (Yenice, Tarsus). The fruit was kept at 0 °C and 85%-90% relative humidity for 8 weeks. After removal from cold storage at weekly intervals, the fruit was kept at 20 °C and 65%-70% relative humidity for 2, 4 or 6 days to determine shelf life in 3 replicates. Changes in weight loss (%), fruit skin color and flesh color (L*, a*, b*), fruit flesh firmness (N), total soluble solids (%), titratable acidity (g malic acid / 100 ml fruit juice), …
Statistical Modeling Of The Effect Of Physio-Biochemical Parameters On Water Use Efficiency Of Grape Varieties, Rootstocks And Their Stionic Combinations Under Moisture Stress Conditions, Jogaiah Satisha, G. S. Prakash, R. Venugopalan
Statistical Modeling Of The Effect Of Physio-Biochemical Parameters On Water Use Efficiency Of Grape Varieties, Rootstocks And Their Stionic Combinations Under Moisture Stress Conditions, Jogaiah Satisha, G. S. Prakash, R. Venugopalan
Turkish Journal of Agriculture and Forestry
The effect of various physio-biochemical parameters on the water use efficiency (WUE) of grape varieties, rootstocks and budded vines was studied in 3 separate experiments at 3 levels of irrigation (100%, 50% and no irrigation) for 14 days of stress cycle. None of the varieties or rootstocks could survive beyond 4 days under the no irrigation treatment. Considerable genetic variability was observed for WUE with respect to photosynthetic rate, transpiration rate, stomatal conductance, root to shoot length ratio, abscisic acid, zeatin riboside, carbon isotope discrimination etc. among grape rootstocks, viz., Dogridge, 1613 C, Salt Creek, St. George and Vitis champinii …
Agronomic Potential And Industrial Value Of Madder (Rubia Tinctorum L.) As A Dye Crop, Hasan Baydar, Tahsi̇n Karadoğan
Agronomic Potential And Industrial Value Of Madder (Rubia Tinctorum L.) As A Dye Crop, Hasan Baydar, Tahsi̇n Karadoğan
Turkish Journal of Agriculture and Forestry
Madder (Rubia tinctorum L.) is a valuable dye crop due to its roots, which are rich in anthraquinone pigments, one of them being alizarin. This study aimed to evaluate the agronomic potential and industrial value of madder plants under rainfed conditions in Southwest Anatolia, Turkey. Three different propagation materials (seeds, seedlings and root cuttings), and 5 different propagation methods (autumn root transplanting, spring root transplanting, autumn seed sowing, spring seed sowing, and spring seedling transplanting) were used in the study. At the end of the 3-year growing period, fresh root yield varied from 1640.1 kg ha^{-1} (in the spring root …
Comparative Characterization Of The Effects Of The Climate–Tree–Growth Relationship In Anatolian Black Pine (Pinus Nigra Arnold Subsp. Pallasiana (Lamb.) Holmboe) On Wood Treatability, İlker Usta
Turkish Journal of Agriculture and Forestry
The effects of the climate-tree-growth relationship on treatability were investigated in the Anatolian black pine (Pinus nigra Arnold subsp. pallasiana (Lamb.) Holmboe) based on the altitudinal locations at approximately 960 m (B1) and 1010 m (B2) in the former coniferous afforestation area in Beytepe, Ankara, Turkey. This was achieved by analysis of the 1º branches at 1, 2, and 3 m tree heights above ground level for the periods 82/98 (March 1982 to February 1998) and 98/04 (March 1998 to February 2004). It appeared that the climatic changes during the period 98/04 had a greater effect on the growth of …
A Correlation And Path Coefficient Analysis Of Components In G. Hirsutum L. Hybrids By Usual And Fibre Quality Grouping, S. L. Ahuja, L. S. Dhayal, Ram Prakash
A Correlation And Path Coefficient Analysis Of Components In G. Hirsutum L. Hybrids By Usual And Fibre Quality Grouping, S. L. Ahuja, L. S. Dhayal, Ram Prakash
Turkish Journal of Agriculture and Forestry
Improvement in fibre length is important for the textile industry in utilising high speed yarn spinning technology and in expanding the array of yarn products. High tensile strength fibre is needed for good spinning, especially with fast modern spinning machines. The usual practice of estimating correlation coefficients and the direct and indirect effects of component traits of seed cotton yield is without grouping the genetic material on the basis of fibre length and strength. Hence, the present investigation was carried out on these aspects by grouping the 20 F1 hybrids into 3 sets on the basis of fibre length and …
Gge-Biplot Analysis Of Multi-Environment Yield Trials In Bread Wheat, Yüksel Kaya, Mevlüt Akçura, Seyfi̇ Taner
Gge-Biplot Analysis Of Multi-Environment Yield Trials In Bread Wheat, Yüksel Kaya, Mevlüt Akçura, Seyfi̇ Taner
Turkish Journal of Agriculture and Forestry
Yield data of 25 bread wheat genotypes tested across 9 rain-fed environments during the 2002-2003 growing season were analyzed using the GGE (i.e. G, genotype + GEI, genotype-by-environment interaction) biplot method. E (environment) explained 81% of the total (G + E + GE) variation, whereas G and GEI captured 7.3% and 11.7%, respectively. The first 2 principal components (PC1 and PC2) were used to create a 2-dimensional GGE-biplot and explained 46.2% and 15.8% of GGE sum of squares (SS), respectively. Genotypic PC1 scores >0 detected the adaptable and/or higher-yielding genotypes, while PC1 scores
Inheritance Of Grain Yield Per Plant, Flag Leaf Width, And Length In An 8 X 8 Diallel Cross Population Of Bread Wheat (T. Aestivum L.), Şahi̇n Dere, Meti̇n Bi̇rkan Yildirim
Inheritance Of Grain Yield Per Plant, Flag Leaf Width, And Length In An 8 X 8 Diallel Cross Population Of Bread Wheat (T. Aestivum L.), Şahi̇n Dere, Meti̇n Bi̇rkan Yildirim
Turkish Journal of Agriculture and Forestry
The inheritance of grain yield per plant, flag leaf width, and flag leaf length was studied applying Jinks-Hayman diallel analysis in an 8 x 8 wheat cross population involving the bread wheat (T. aestivum L.) genotypes Cumhuriyet, Kaşifbey, Ziyabey, Marmara, Basribey, Malabadi, Yüreğir, and Seri-82. The crosses were made by hand, without reciprocals, in field conditions from March to May 2001, and the field experiment was conducted during the October 2002 to June 2003 growing season. The analysis of data showed that the additive variance component (D) was significant for flag leaf width (P < 0.01). The dominance variance component (H_1) was significant for flag leaf width and grain yield per plant. The dominance level variance component (h^2) and corrected dominance variance component (H_2) were significant for all 3 traits studied (P < 0.01). The Wr/Vr graphs indicated overdominance for grain yield per plant and flag leaf width, while partial dominance was inferred for flag leaf length. Flag leaf length was significantly and positively correlated with flag leaf width (r = 0.803). Yüreğir x Malabadi crosses should be considered for maximizing photosynthetic area of the leaf.
Salt Tolerance Of Pepper Cultivars During Germination And Seedling Growth, Ertan Yildirim, İsmai̇l Güvenç
Salt Tolerance Of Pepper Cultivars During Germination And Seedling Growth, Ertan Yildirim, İsmai̇l Güvenç
Turkish Journal of Agriculture and Forestry
This study was conducted to evaluate the effect of salinity on the germination and emergence of pepper cultivars, and to investigate the potential for genetic salt tolerance during germination and seedling growth. Thus, seeds of 11 pepper cultivars were germinated using 0, 85, 170, and 215 mM NaCl solutions for 14 days. Germination percentage decreased with increased NaCl concentration. All cultivars germinated in all salinities, with the exception of Kandil Dolma in 215 mM NaCl. The greatest germination percentage at 215 mM of NaCl was 71% for 11-B-14. NaCl salinity at different concentrations adversely affected germination rates of the 11 …
Effect Of Salinity Stress On Dry Matter Production And Ion Accumulation In Hybrid Maize Varieties, Seli̇m Eker, Gönül Cömertpay, Ömer Konuşkan, Ahmet Can Ülger, Levent Öztürk, İsmai̇l Çakmak
Effect Of Salinity Stress On Dry Matter Production And Ion Accumulation In Hybrid Maize Varieties, Seli̇m Eker, Gönül Cömertpay, Ömer Konuşkan, Ahmet Can Ülger, Levent Öztürk, İsmai̇l Çakmak
Turkish Journal of Agriculture and Forestry
The salt stress tolerance of 19 hybrid maize (Zea mays L.) varieties was tested in nutrient solution during the early growth stage under controlled environmental conditions. For the salt stress treatment, sodium chloride (NaCl) was applied to nutrient solution at a concentration of 250 mM for 6 days before the harvest. Plants were harvested after 17 days of growth and analyzed for shoot and root dry matter production, severity of leaf damage (necrotic patches on older leaves), and the concentrations of potassium (K), sodium (Na) and calcium (Ca) in the roots and shoots. The varieties differed greatly in their response …