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Articles 1531 - 1560 of 2171
Full-Text Articles in Life Sciences
Modeling Approaches To Salt Management Problems In Irrigated Agriculture: A Review, Ataç Tuli̇, William Austin Jury
Modeling Approaches To Salt Management Problems In Irrigated Agriculture: A Review, Ataç Tuli̇, William Austin Jury
Turkish Journal of Agriculture and Forestry
Irrigation projects have been developed throughout human history to increase food production, but they frequently contribute to salinization and drainage problems as well. Examples where salinization and drainage water disposal due to agricultural activity are a critical problem can be found in irrigated areas in different parts of the world. To find possible solutions to irrigation and drainage related problems, government agencies, scientists, and soil and water resources managers recommend a broad array of management alternatives for conducting investigations. The concept of management alternatives of salinization and drainage problems can be evaluated by field experiments and/or by simulating conditions with …
Effect Of Hypocotyl Morphology On Survival Rate And Growth Of Watermelon Seedlings Grafted On Rootstocks With Different Emergence Performance At Various Temperatures, Hali̇t Yeti̇şi̇r, Nebahat Sari
Effect Of Hypocotyl Morphology On Survival Rate And Growth Of Watermelon Seedlings Grafted On Rootstocks With Different Emergence Performance At Various Temperatures, Hali̇t Yeti̇şi̇r, Nebahat Sari
Turkish Journal of Agriculture and Forestry
The emergence performance of different rootstocks and watermelon cultivars at different temperatures, and the effect of hypocotyl structure on grafting success and survival rate were investigated. Evaluated rootstocks were Cucurbita moschata (landrace), C. maxima (Arıcan local cultivar), Strong Tosa (C. maxima x C. moschata), P360 (C. maxima x C. moschata), Luffa cylindrica, Benincasa hispida, Lagenaria siceraria (landrace), Skopje (Landrace), and 2 Lagenaria hybrids, 216 and FR Gold. The Crimson Tide watermelon cultivar was used as scion. Emergence tests at 14 ºC, 18 ºC and 25 ºC were carried out for all rootstocks and scion seeds in a growth chamber. Cucurbita …
Hormone Signaling Pathways In Plants: The Role Of Jasmonic Acid In Plant Cell Signaling, İskender Ti̇ryaki̇
Hormone Signaling Pathways In Plants: The Role Of Jasmonic Acid In Plant Cell Signaling, İskender Ti̇ryaki̇
Turkish Journal of Agriculture and Forestry
Plant growth and metabolism are affected by various biotic and abiotic stimuli including microorganisms and insects attack as well as light and environmental stresses. Such a diverse plant response requires a communication system that uses a group of chemical messengers called hormones. Hormones promote, inhibit, or qualitatively modify plant growth and development. This complex process requires a signal transduction that defines a specific information pathway within a cell that translates an intra- or extracellular signal into a specific cellular response. The characterization of mutants in the hormone response pathway provides not only an excellent opportunity to understand hormone action in …
In Vitro Propagation Of Some New Banana Types (Musa Spp.), Hami̇de Gübbük, Mustafa Pekmezci̇
In Vitro Propagation Of Some New Banana Types (Musa Spp.), Hami̇de Gübbük, Mustafa Pekmezci̇
Turkish Journal of Agriculture and Forestry
Three newly selected superior banana types were used to study the effects of different cytokinin and auxins on shoot multiplication and rooting. Benzylaminopurine [(BAP) (5, 10, 20 and 30 µM)] and thidiazuron [(TDZ) (0.4, 1, 2 and 3 µM)] were tested alone and with 1 µM indoleacetic acid (IAA) for the propagation stage. We compared basal Murashige and Skoog (MS) medium, active charcoal (5 g l^{-1}), indole-3-butyric acid (IBA) and naphthaleneacetic acid (NAA) for rooting. Shoot proliferation and elongation were significantly greater with TDZ than with BAP all 3 types. Furthermore, each cytokinin with IAA increased shoot proliferation and elongation …
Comparison Of Fresh Pod Yield And Pod Related Characteristics In Pea (Pisum Sativum L.) Cultivars Sown In Autumn And Spring Under Samsun Ecological Conditions, Erkut Pekşen, Aysun Pekşen, Hati̇ce Bozoğlu, Ali̇ Gülümser
Comparison Of Fresh Pod Yield And Pod Related Characteristics In Pea (Pisum Sativum L.) Cultivars Sown In Autumn And Spring Under Samsun Ecological Conditions, Erkut Pekşen, Aysun Pekşen, Hati̇ce Bozoğlu, Ali̇ Gülümser
Turkish Journal of Agriculture and Forestry
: In this study, 15 pea (Pisum sativum L.) cultivars sown in autumn and spring were investigated for their fresh pod yield and pod characteristics under Samsun ecological conditions during the 1999-2000 and 2000-2001 growing seasons. The results of the study for fresh pod yield from the combined 2 years showed that there was a statistically significant difference among the cultivars. The highest fresh pod yield was obtained from Vilmoren (17,840 kg ha^{-1}), followed by Lancet (14,290 kg ha^{-1}), Agromar AG 7306 (13,880 kg ha^{-1}), Jumbo (13,830 kg ha^{-1}), Sprinter (13,690 kg ha^{-1}), Sugar Bon (12,370 kg ha^{-1}), Bolero (12,800 …
Correlation And Path Coefficient Analyses Of Seed Yield Components In The Narbon Bean (Vicia Narbonensis L.), Celal Yücel
Correlation And Path Coefficient Analyses Of Seed Yield Components In The Narbon Bean (Vicia Narbonensis L.), Celal Yücel
Turkish Journal of Agriculture and Forestry
The purpose of this research was to evaluate phenotypic correlation coefficents between seed yield per plant and some yield components, and to determine the direct and indirect effect of 6 components on seed yield per plant in narbon bean (Vicia narbonensis L.) lines. The research was conducted in the area of the Field Crops Research Training Center of the University of Çukurova, in Adana, Turkey, in the 1996/97 and 1997/98 crop years. The randomized complete blocks design with 3 replications was used. Positive and statistically significant (p
Insect Growth Regulators For Insect Pest Control*, Hasan Tunaz, Nedi̇m Uygun
Insect Growth Regulators For Insect Pest Control*, Hasan Tunaz, Nedi̇m Uygun
Turkish Journal of Agriculture and Forestry
Insecticides with growth regulating properties (IGR) may adversely affect insects by regulating or inhibiting specific biochemical pathways or processes essential for insect growth and development. Some insects exposed to such compounds may die due to abnormal regulation of hormone-mediated cell or organ development. Other insects may die either from a prolonged exposure at the developmental stage to other mortality factors (susceptibility to natural enemies, environmental conditions etc) or from an abnormal termination of a developmental stage itself. Insect growth regulators may come from a blend of synthetic chemicals or from other natural sources, such as plants. The chemical composition of …
Host-Specific Toxin Production By The Tomato Target Leaf Spot Pathogen Corynespora Cassiicola, Şener Kurt
Host-Specific Toxin Production By The Tomato Target Leaf Spot Pathogen Corynespora Cassiicola, Şener Kurt
Turkish Journal of Agriculture and Forestry
The culture filtrate (CF) of Corynespora cassiicola, the causal agent of target leaf spot of tomato, produced visible small, pinpoint, water-soaked lesions on the lower surface of wounded, detached leaves after incubation for 48 h. The extraction, isolation and purification of C. cassiicola tomato (CCT) toxin was achieved by anion exchange and gel filtration chromatography. Treatments of the CF with Diaion HP-20 resin and Cosmosil C18-OPN gel were found to be highly effective. The toxin purified partially by cosmosil gel filtration was highly active against the tomato cultivar Momotaro used in the bioassay test, and the fraction eluted with 50% …
Effects Of Different Sowing Date And Intrarow Spacing On Yield And Some Agronomic Traits Of Safflower (Carthamus Tinctorius L.) Under Harran Plain's Arid Conditions*, Abdulhabi̇p Özel, Tuncay Demi̇rbi̇lek, M. Ati̇lla Gür, Osman Çopur
Effects Of Different Sowing Date And Intrarow Spacing On Yield And Some Agronomic Traits Of Safflower (Carthamus Tinctorius L.) Under Harran Plain's Arid Conditions*, Abdulhabi̇p Özel, Tuncay Demi̇rbi̇lek, M. Ati̇lla Gür, Osman Çopur
Turkish Journal of Agriculture and Forestry
This study was conducted to determine the suitable sowing date and intrarow spacing for safflower (Carthamus tinctorius L.) under Harran Plain's arid conditions during the 1998-1999 and 1999-2000 winter growing seasons. Four sowing dates (mid-October, early November, mid-November and early December) and 5 intrarow spacings (5 cm, 10 cm, 15 cm, 20 cm and 25 cm) were applied. Dinçer-118 was used as the safflower cultivar. Seed yield (1191.7-667.5 kg ha^{-1}), oil content (35.48-25.66%), oil yield (389.4-175.9 kg ha^{-1}), shell rate (50.37-39.33%) and 1000-seed weight (36.71-29.22 g) were investigated and all parameters measured were significantly affected by the treatments. The results …
Soil Respiration In Young And Old Oriental Spruce Stands And In Adjacent Grasslands In Artvin, Turkey, Aydin Tüfekçi̇oğlu, Mehmet Küçük
Soil Respiration In Young And Old Oriental Spruce Stands And In Adjacent Grasslands In Artvin, Turkey, Aydin Tüfekçi̇oğlu, Mehmet Küçük
Turkish Journal of Agriculture and Forestry
Soil respiration is a good indicator of soil quality. In this study, the influence of species type and sampling time on soil respiration in young and old oriental spruce (Picea orientalis (L.) Link.) stands without understory and with a Rhododendron ponticum L. understory and in adjacent grasslands were investigated in Genya Mountain, Artvin, Turkey. Soil respiration was measured approximately monthly from May to October using the soda-lime technique. Mean daily soil respiration across all sites ranged from 0.26 to 2.66 g C m^{-2} d^{-1}. There were significant differences between grasslands and old forest sites, but no significant differences between young …
Effects Of Controlled Atmosphere Storage On Scald Development And Postharvest Physiology Of Granny Smith Apples, Mustafa Erkan, Mustafa Pekmezci̇, Hami̇de Gübbük, Işilay Karaşahi̇n
Effects Of Controlled Atmosphere Storage On Scald Development And Postharvest Physiology Of Granny Smith Apples, Mustafa Erkan, Mustafa Pekmezci̇, Hami̇de Gübbük, Işilay Karaşahi̇n
Turkish Journal of Agriculture and Forestry
The effects of different O2 and CO_2 concentrations on the scald development and postharvest physiology of Granny Smith apples (Malus domestica Borkh.) were investigated. Apples were harvested at optimal harvest time and stored in 1% CO_2/2% O_2, 2% CO_2/2% O_2, 3% CO_2/2% O_2 and 0% CO_2/21% O_2 (control) at 0 °C and 90-92% relative humidity for 9 months. At certain intervals, samples were collected from each storage condition for physical and chemical analysis (e.g. weight loss, flesh firmness, amount of titratable acid, total soluble solids, skin color, scald development, respiration rate and decayed fruit). Respiration rates of the apples were …
The Effect Of Moisture Content And Wood Density On The Preservative Uptake Of Caucasian Fir (Abies Nordmanniana (Link.) Spach.) Treated With Cca, İlker Usta
Turkish Journal of Agriculture and Forestry
The effect of moisture content and wood density on the preservative uptake (on the basis of the percentage of void volume filled (VVF%)) of Caucasian fir (Abies nordmanniana (Link.) Spach.) was studied in various levels of moisture content (MC). VVF% was measured in 11 MC regimes (7 of which were designed to be below the fibre saturation point (FSP)) consequtively nominated using a conventional kiln. All the samples were treated with CCA-tanalith C via a mild schedule of full-cell impregnation. A significant correspondence between MC and both wood density and VVF% was established and an attempt was thus made to …
In Vitro Studies On Some Natural Beverages As Botanical Pesticides Against Erwinia Amylovora And Curtobacterium Flaccumfaciensis Subsp. Poinsettiae, Mehmet Nuri̇ Nas
In Vitro Studies On Some Natural Beverages As Botanical Pesticides Against Erwinia Amylovora And Curtobacterium Flaccumfaciensis Subsp. Poinsettiae, Mehmet Nuri̇ Nas
Turkish Journal of Agriculture and Forestry
Several tannin-rich beverages were tested for their antibacterial activity against 2 important phytopathogenic bacteria, Erwinia amylovora and Curtobacterium flacumfaciensis subsp. poinsettiae. Black tea (9.5, 19 and 38 g l^{-1}), green tea (9.5, 19 and 38 g l^{-1}) and tannic acid (0.2, 0.4 and 0.8 g l^{-1}) inhibited the growth of E. amylovora and C. f. subsp. poinsettiae. Coffee (8.75, 17.5 and 35 g l^{-1}) and cocoa (8.75, 17.5 and 35 g l^{-1}) did not display any inhibitory effect on the growth of bacterial cultures. The numbers of colony forming units (CFUs) of E. amylovora in the presence of black tea, …
Evaluation Of The Antioxidant And Antimicrobial Activities Of Clary Sage (Salvia Sclarea L.), İlhami̇ Gülçi̇n, Meti̇n T. Uğuz, Müni̇r Oktay, Şükrü Beydemi̇r, Ömer İrfan Küfrevi̇oğlu
Evaluation Of The Antioxidant And Antimicrobial Activities Of Clary Sage (Salvia Sclarea L.), İlhami̇ Gülçi̇n, Meti̇n T. Uğuz, Müni̇r Oktay, Şükrü Beydemi̇r, Ömer İrfan Küfrevi̇oğlu
Turkish Journal of Agriculture and Forestry
The present work evaluates the antioxidant and antimicrobial activity of clary sage (CS) Salvia sclarea L. Antimicrobial, total antioxidant, DPPH radical scavenging, superoxide anion radical scavenging, hydrogen peroxide scavenging and metal chelating activities, reducing power, and total contents of phenolic compounds of dried herb samples extracted with chloroform and acetone were studied. The chloroform extract had stronger total antioxidant activity than the acetone extract and exhibited 93 and 68% inhibition of linoleic acid peroxidation, respectively. a-Tocopherol, quercetin, butylated hydroxyanisole and butylated hydroxytoluene were used as standard antioxidants. Antimicrobial activities of both CS extracts were examined by means of disk-diffusion methods …
Archaeobotanical And Dendroarchaeological Studies In Ilgarini Cave (Pınarbaşı, Kastamonu, Turkey), Ünal Akkemi̇k, Burhan Aytuğ, Sercay Güzel
Archaeobotanical And Dendroarchaeological Studies In Ilgarini Cave (Pınarbaşı, Kastamonu, Turkey), Ünal Akkemi̇k, Burhan Aytuğ, Sercay Güzel
Turkish Journal of Agriculture and Forestry
With its historical remains and beautiful travertine formations, Ilgarini cave is important in terms of archaeobotany and natural sciences. In the left part of the cave there are 2 temples and 11 graves. These graves had 3 floors, and wooden materials were used between them. The purpose of the study was to identify the wooden materials taken from the graves in Ilgarini cave and to determine the lifetime of the people who lived in the cave by dating them dendrochronologically. In wood identification analysis, many thin sections were cut, and they were compared with reference wood sections. In dendroarchaeological analysis, …
Effects Of Barley As A Companion Crop On The Hay Yield And Plant Density Of Red Clover And The Botanical Composition Of Hay, Mustafa Tan, Yunus Seri̇n, H. İbrahi̇m Erkovan
Effects Of Barley As A Companion Crop On The Hay Yield And Plant Density Of Red Clover And The Botanical Composition Of Hay, Mustafa Tan, Yunus Seri̇n, H. İbrahi̇m Erkovan
Turkish Journal of Agriculture and Forestry
Forage legumes are frequently established with a companion crop such as a cereal crop for controlling weed invasion and high hay production. This study was conducted under irrigated conditions in order to determine the effects of the seeding rate and harvest stage of barley as a companion crop on the hay yield and plant density of red clover and the botanical composition of hay. Red clover was established with barley sown at 0, 60, 120 and 180 kg ha^{-1} and cut at the milk-dough and hard-dough stages. The highest total hay yield (6000 kg ha^{-1}) was measured at a 180 …
Effect Of Different Control Methods On Weeds, Yield Components And Nodulation In The Spring Lentil, Işik Tepe, Murat Erman, Ayşe Yazlik, Remzi̇ Levent, Kuddusi̇ İpek
Effect Of Different Control Methods On Weeds, Yield Components And Nodulation In The Spring Lentil, Işik Tepe, Murat Erman, Ayşe Yazlik, Remzi̇ Levent, Kuddusi̇ İpek
Turkish Journal of Agriculture and Forestry
This study was conducted on the lentil cultivar Malazgirt 89 during 1999 and 2000 to determine the most appropriate method for controlling weeds. In the experiments, hand hoeing, trifluralin, imazethapyr, linuron, prometryn, phenmedipham + desmediphame, trifluralin + hand hoeing and linuron + hand hoeing which should be used as an alternative to hand weeding, were tested. The effects of herbicides on nodulation in lentils were also investigated. Centaurea depressa in the first year, and Ranunculus arvensis and Acroptilon repens in the second year were the dominant weed species encountered in the plots. A combination of linuron + hand hoeing, linuron …
Determination Of Wetland Vegetation Height With Lidar, Levent Genç, Bon Dewitt, Scot Smith
Determination Of Wetland Vegetation Height With Lidar, Levent Genç, Bon Dewitt, Scot Smith
Turkish Journal of Agriculture and Forestry
Light Detection and Ranging (LIDAR) is a new technology that offers a potential alternative to field surveying and photogrammetric techniques for the collection of elevation data. It has the advantages of being rapid accurate and able to map areas that are difficult to access. LIDAR has demonstrated the capability to accurately estimate important vegetation structural characteristics such as forest canopy height. For these reasons, airborne LIDAR data were used to compare vegetation height determinations with field observations on one selected transect in the vicinity of Lake Hatchineha in Florida, USA. The approach was based on the LIDAR and field measurements. …
Carbon Dynamics In Tallgrass Prairie And Wheat Ecosystems, Rasi̇m Koçyi̇ği̇t, Charles W. Rice
Carbon Dynamics In Tallgrass Prairie And Wheat Ecosystems, Rasi̇m Koçyi̇ği̇t, Charles W. Rice
Turkish Journal of Agriculture and Forestry
Soil carbon (C) dynamics is an important aspect of the global C cycle. Soils can be a sink or source for atmospheric CO_2 depending upon management. Tallgrass prairie and wheat (Triticum aestivum L.) are 2 dominant ecosystems in the Great Plains. This study determined the distribution of C in these 2 ecosystems. Soil C pools, plant root biomass, and aboveground plant biomass were determined at a wheat (winter wheat) and a tallgrass prairie site in northern Oklahoma from 1998 through 2001. The objectives of this study were to determine C storage and changes in soil organic matter in tallgrass prairie …
The Influence Of Clay Content, Organic Carbon And Land Use Types On Soil Aggregate Stability And Tensile Strength, Yasemi̇n Kavdir, Hasan Özcan, Hüseyi̇n Eki̇nci̇, Orhan Yüksel, Yusuf Yi̇ği̇ni̇
The Influence Of Clay Content, Organic Carbon And Land Use Types On Soil Aggregate Stability And Tensile Strength, Yasemi̇n Kavdir, Hasan Özcan, Hüseyi̇n Eki̇nci̇, Orhan Yüksel, Yusuf Yi̇ği̇ni̇
Turkish Journal of Agriculture and Forestry
Soil tensile strength (TS) and aggregate stability (AS) values can be used as indicators of soil structural quality. The objective of this study was to determine the influences of land use types, soil carbon and clay contents on soil structure. Soil samples were collected from 51 different locations from the Kumkale Basin in Çanakkale in April and July 2003. A global positioning system (GPS) was used to determine the coordinates of sampling points. TS, AS, soil organic carbon (SOC), and clay contents were determined. Results of soil analysis and coordinates of sampling points were transferred to the Arc View geographical …
The Effect Of Water Deficit On Yield And Yield Components Of Sugar Beet, Kenan Uçan, Cafer Gençoğlan
The Effect Of Water Deficit On Yield And Yield Components Of Sugar Beet, Kenan Uçan, Cafer Gençoğlan
Turkish Journal of Agriculture and Forestry
This study was conducted to determine the effect of different water levels on the sugar rate, sugar yield and root yield of sugar beet (Beta vulgaris L.) under Kahramanmaraş climatic conditions in the production season 1999-2000. A line source sprinkler irrigation system was used with 6 irrigation levels; I_1, I_2, I_3, I_4, I_5 and I_6. The sugar beet row adjacent to the lateral was denoted the most water applied level (I_1), and the most remote row from the lateral was denoted the least water applied level (I_6). The plant rows between levels I_1 and I_6 were taken as the deficit …
Variation In Essential Oil Content And Composition In Turkish Anise (Pimpinella Anisum L.) Populations*, Neşet Arslan, Bi̇lal Gürbüz, Ercüment O. Sarihan, Ali̇ Bayrak, Ahmet Gümüşçü
Variation In Essential Oil Content And Composition In Turkish Anise (Pimpinella Anisum L.) Populations*, Neşet Arslan, Bi̇lal Gürbüz, Ercüment O. Sarihan, Ali̇ Bayrak, Ahmet Gümüşçü
Turkish Journal of Agriculture and Forestry
This research was carried out at the University of Ankara, Faculty of Agriculture, Field Crops Department and the laboratories of the Food Engineering Department. Twenty-nine anise seed samples were collected from different locations in 9 producer provinces in Turkey and were used as the study materials in order to determine essential oil and essential oil compositions. According to the results, essential oil levels varied from 1.3% to 3.7%. The major component of the essential oil was trans-anethole. This compound ranged from 78.63% to 95.21%. Population 26 may be recommended for trans-anethole percentage and populations 8 and 22 for essential oil …
Effects Of Seeding Rates On Yield And Yield Components Of Hungarian Vetch (Vicia Pannonica Crantz.), Ayşen Uzun, Uğur Bi̇lgi̇li̇, Mehmet Si̇nci̇k, Esvet Açikgöz
Effects Of Seeding Rates On Yield And Yield Components Of Hungarian Vetch (Vicia Pannonica Crantz.), Ayşen Uzun, Uğur Bi̇lgi̇li̇, Mehmet Si̇nci̇k, Esvet Açikgöz
Turkish Journal of Agriculture and Forestry
The effects of 4 seeding rates (20, 40, 80 and 160 kg ha^{-1}) on dry matter yield, seed yield and yield components were evaluated in 4 accessions (L46, L79, L457, Local) of Hungarian vetch (Vicia pannonica Crantz.) under fall seeding conditions during the 2000-2001 and 2001-2002 crop years. Dry matter yield, plant height, number of pods per plant, number of seeds per plant, 1000- seed weight, biomass yield, seed yield and harvest index were measured. Based on the 2-year results, no significant differences were found among Hungarian vetch accessions in any of the measured characteristics with the exception of 1000- …
Qtl Analysis Of Ascochyta Blight Resistance In Chickpea, Mücella Tekeoğlu, Muzaffer Işik, Fred J. Muehlbauer
Qtl Analysis Of Ascochyta Blight Resistance In Chickpea, Mücella Tekeoğlu, Muzaffer Işik, Fred J. Muehlbauer
Turkish Journal of Agriculture and Forestry
Recent advances in quantitative trait loci (QTL) analysis have facilitated studies on Ascochyta blight, caused by Ascochyta rabiei Pass (Lab.), resistance in chickpea (Cicer arietinum L.). Using a recombinant inbred line (RIL) population derived from an interspecific cross between C. arietinum and C. reticulatum, the same 2 QTLs conferring resistance to Ascochyta blight were identified at 2 locations by interval mapping. Genotype X environment (G x E) interaction was significant both between years at the same location and between locations. The effect of QTL-1 on linkage group 8 (LG-8) was greater than that of QTL-2 on LG-4 at Pullman while …
Inclusion Of Polyamines In The Medium Improves Shoot Elongation In Hazelnut (Corylus Avellana L.) Micropropagation, Mehmet Nuri̇ Nas
Inclusion Of Polyamines In The Medium Improves Shoot Elongation In Hazelnut (Corylus Avellana L.) Micropropagation, Mehmet Nuri̇ Nas
Turkish Journal of Agriculture and Forestry
Buds from newly developed shoots obtained from forced outgrowth of mature field-grown hybrid hazelnut trees (Corylus avellana L.) were cultured in vitro on Murashige and Skoog [MS (1962)] medium and a modified Driver and Kuniyuki [DKW (1984)] medium containing 6.7 µM, 11.1 µM or 15.5 µM of N-6 benzyladenine (BA) supplemented with or without a combination of polyamines (0.2 mM of putrescine + 0.2 mM of spermidine + 0.05 mM of spermine). The effects of culture medium and BA were found to be insignificant on explant response. Polyamines were found to have a strong effect on both shoot elongation and …
Effects Of Iba And Cutting Dates On The Rooting Ability Of Semi-Hardwood Kiwifruit (Actinidia Deliciosa A.Chev.) Cuttings, Ali̇ Ömer Üçler, Sali̇h Parlak, Zafer Yücesan
Effects Of Iba And Cutting Dates On The Rooting Ability Of Semi-Hardwood Kiwifruit (Actinidia Deliciosa A.Chev.) Cuttings, Ali̇ Ömer Üçler, Sali̇h Parlak, Zafer Yücesan
Turkish Journal of Agriculture and Forestry
The effects of 1 H-indole-3-butyric acid (IBA) and cutting date on the rooting of semi-hardwood cuttings from the kiwifruit (Actinidia deliciosa A.Chev.) were investigated. In rooting experiments 0, 4, 6 and 8 gl^{-1} concentrations of the IBA were used and the cuttings were taken on July 23 and August 22, 1999. The results of the study revealed that cuttings taken in July had better rooting ability in terms of main root numbers, the mean length of the longest 5 roots and rooting area. On the other hand, 6 and 8 gl^{-1} IBA concentrations did not significantly affect rooting ability. Split …
Determination Of Hydraulic Performance Of Trickle Irrigation Emitters Used In Irrigation Systems In The Harran Plain, Hali̇l Kirnak, Ergün Doğan, Siddik Demi̇r, Sabri̇ Yalçin
Determination Of Hydraulic Performance Of Trickle Irrigation Emitters Used In Irrigation Systems In The Harran Plain, Hali̇l Kirnak, Ergün Doğan, Siddik Demi̇r, Sabri̇ Yalçin
Turkish Journal of Agriculture and Forestry
Trickle irrigation systems' efficiency depends on system uniformity, which is determined by water discharge uniformity from emitters. It is impossible to produce 2 identical emitters due to manufacturing variations. The manufacturer's coefficient of variance is used as a measure of discharge variations of emitters. In this study, manufacturers' reported discharge rates and coefficients of manufacturing variation (CVm) values were compared with test results for various types of in-line emitters manufactured by 4 different companies in Turkey. A total of 9 drip irrigation lines, comprising 7 non-compensating and 2 compensating emitters, were tested at 50, 100, 150, 200 and 250 kPa …
Inheritance Of Grain Yield In A Half-Diallel Maize Population, Aydin Ünay, Cahi̇t Konak, Hüseyi̇n Başal
Inheritance Of Grain Yield In A Half-Diallel Maize Population, Aydin Ünay, Cahi̇t Konak, Hüseyi̇n Başal
Turkish Journal of Agriculture and Forestry
Inheritance of grain yield, heterosis and combining ability were investigated in maize populations obtained from half-diallel crossing among 9 inbred parental lines. General and specific combining ability effects were significantly different among parental lines. The grain yield was under the dominance gene effect. The parents W 552 and DNB were considered suitable according to their yield capacities and general combining ability effects. The midparent heterosis values ranged from 46.10% (H.96 x DNB) to 573.12% (ALKD 222 x A 632) whereas the useful heterosis values varied between -46.47% (A 619 x A 632) and 10.78% (N 7A x ALKD 90-1), and …
The Competitive Ability Of Avena Spp. And Alopecurus Myosuroides Huds. Influenced By Different Wheat (Triticum Aestivum) Cultivars, Hüsrev Mennan, Doğan Işik
The Competitive Ability Of Avena Spp. And Alopecurus Myosuroides Huds. Influenced By Different Wheat (Triticum Aestivum) Cultivars, Hüsrev Mennan, Doğan Işik
Turkish Journal of Agriculture and Forestry
Field experiments were conducted at Havza and Gelemen to evaluate the effect of different densities of Avena spp. and Alopecurus myosuroides Huds. on wheat cultivars Bezostaja and Kate-A-I. As expected the semi-dwarf cultivar Bezostaja was shorter than Kate-A-I in all weed densities, indicating that plant height was not correlated with competitiveness under the experimental conditions. The mean yields of Bezostaja and Kate-A-I in the weed-free plots in 2000-2001were 3420 kg ha^{-1} and 3360 kg ha^{-1}, respectively. Both species caused decreases in wheat yield with increasing density. While 20 Avena spp. per square reduced the yield by 13.3% in Bezostaja, yield …
The Screening Of F_2 Plants For The Root-Knot Nematode Resistance Gene, Mi By Pcr In Tomato, Zübeyi̇r Devran, İ. Hali̇l Elekçi̇oğlu
The Screening Of F_2 Plants For The Root-Knot Nematode Resistance Gene, Mi By Pcr In Tomato, Zübeyi̇r Devran, İ. Hali̇l Elekçi̇oğlu
Turkish Journal of Agriculture and Forestry
Root-knot nematodes are major pests of field and vegetable crops in Turkey and worldwide. They cause damage to many economically important horticultural crops like potato, cotton and tomato. Tomato is one of the crops in which genetic resistance has been especially effective against root-knot nematodes. In the 1940s the root-knot nematode resistance gene (Mi) was introgressed into the cultivated tomato from the wild species Lycopersicon peruvianum. Today, many commercial tomato varieties carry the Mi gene, which has been mapped. This gene confers resistance to Meloidogyne incognita, M. javanica and M. arenaria. The short arm of chromosome 6 and many markers …