Yazar "Ucak, Ali Beyhan" seçeneğine göre listele

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    Defining Irrigation Scheduling Based on Crop Water Stress Index and Physiological Parameters for Hybrid Corn in Semi-Arid Climate
    (Middle Pomeranian Sci Soc Env Prot, 2022) Ucak, Ali Beyhan; Saltuk, Burak; Rolbiecki, Roman; Atilgan, Atilgan
    The goal of this study is to determine the crop water stress index (CWSI) and irrigation scheduling based on CWSI values, as well as to examine the correlations between CWSI, physiological parameters and grain yield of hybrid corn P31A34 in semi-arid climate conditions. In 2014 and 2015, the upper limit (UL) temperatures at which plants were entirely exposed to water stress were 1.178 & DEG;C and 2.38 & DEG;C, respectively. When the corn grain yield began to decline, the CWSI threshold value was 0.34, indicating the yield limit. Grain yield, crop water consumption, crop water stress index, chlorophyll content, water use efficiency and leaf area index were found to have negative correlations (p & LE; 0.01) with CWSI values in both years of the study. The findings revealed that in semi-arid climate conditions, a maximum of 30% water deficit could be used during the growing period of the corn compared to full irrigation (I100) for water savings and that a water deficit greater than 30% results in considerable grain yield losses. In areas with limited water resources, the moderate water deficit (I70) may be a viable alternative to the I100.
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    DETERMINATION OF SESAME (SESAMUM INDICUM L.) GENOTYPES TOLERANT TO WATER STRESS AND STRESS TOLERANCE INDICATORS BY DRIP IRRIGATION IN SEMI-ARID CLIMATE CONDITIONS
    (Parlar Scientific Publications (P S P), 2020) Ucak, Ali Beyhan; Arslan, Huseyin; Ozcinar, Aynur Bilmez; Arslan, Dogan; Bayraktar, Onder Volkan
    The purpose of this study was to determine the water stress tolerance of sesame genotypes (Arslanbey, Halisbey and H2) grown in water-stress free (SF) (I-100), water-stress (WS) (I-70) and extreme water stress (EWS) (I-35) conditions in 2016 and 2017. The experiment was carried out in a split plot design within randomized blocks with three replications. Variance analysis revealed statistically significant (p<0.01) differences between genotypes. The highest yield (HY) (706.56 kg ha(-1)) for two-year average in extreme water stress (EWS) treatment was obtained in the interaction of I(35)xArslanbey which had a low plant water stress index (CWSI) (0.56) and a high chlorophyll content (CC) (28.95 spad). The lowest yield (LY) (580.16 kg ha(-1)) was obtained in the interaction of I(35)xH2 which had a high CWSI (0.63) and a low CC (27.39 spad). In water stress free (SF) treatment, the HY (1297.07 kg ha(-1)) was obtained in the I(100)xArslanbey interaction which had a low CWSI (0.16) and high CC (43.83 spad), while the LY (1125.51 kg ha(-1)) was determined in the interaction of I(100)xH2 which had a high CWSI (0.24) and a low CC (38.60 spad). Significant correlations (p<0.01) were determined among all investigated traits. The results of the study revealed that Arslanbey sesame genotype is a prominent variety in terms of yield both under EWS and SF treatments and optimum efficiency in irrigation water utilization. Therefore, Arslanbey genotype was considered to be tolerant to water stress and can be evaluated in water stress tolerance studies. In addition, the findings of the study indicated that CWSI and CC values of sesame plants can be used as stress screening parameters (tolerance indicator) in breeding studies for the selection of water stress tolerant sesame varieties.
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    Determination of sesame (Sesamumindicum L.) genotypes tolerant to water stress and stress tolerance indicators by drip irrigation in semi-arid climate conditions
    (Parlar Scientific Publications, 2020) Ucak, Ali Beyhan; Arslan, Huseyin; Ozcinar, Aynur Bilmez; Arslan, Dogan; Bayraktar, Onder Volkan
    The purpose of this study was to determine the water stress tolerance of sesame genotypes (Arslanbey, Halisbey and H2) grown in water-stress free (SF) (I1 0 0), water-stress (WS) (I7 0) and extreme water stress (EWS) (I3 5) conditions in 2016 and 2017. The experiment was carried out in a split plot design within randomized blocks with three replications. Variance analysis revealed statistically significant (p<0.01) differences between genotypes. The highest yield (HY) (706.56 kg ha- 1) for two-year average in extreme water stress (EWS) treatment was obtained in the interaction of I3 5xArslanbey which had a low plant water stress index (CWSI) (0.56) and a high chlorophyll content (CC) (28.95 spad). The lowest yield (LY) (580.16 kg ha- 1) was obtained in the interaction of I3 5xH2 which had a high CWSI (0.63) and a low CC (27.39 spad). In water stress free (SF) treatment, the HY (1297.07 kg ha- 1) was obtained in the I1 0 0xArslanbey interaction which had a low CWSI (0.16) and high CC (43.83 spad), while the LY (1125.51 kg ha- 1) was determined in the interaction of I1 0 0xH2 which had a high CWSI (0.24) and a low CC (38.60 spad). Significant correlations (p<0.01) were determined among all investigated traits. The results of the study revealed that Arslanbey sesame genotype is a prominent variety in terms of yield both under EWS and SF treatments and optimum efficiency in irrigation water utilization. Therefore, Arslanbey genotype was considered to be tolerant to water stress and can be evaluated in water stress tolerance studies. In addition, the findings of the study indicated that CWSI and CC values of sesame plants can be used as stress screening parameters (tolerance indicator) in breeding studies for the selection of water stress tolerant sesame varieties. © b y PSP
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    Determination of water-efficiency relationships and silage quality characteristics of the maize species for silage(Zea mays L.) the first product grown under semi-arid climate conditions
    (Parlar Scientific Publications, 2016) Ucak, Ali Beyhan; Gencoglan, Cafer; Bagdatli, M. Cuneyt; Turan, Nizamettin; Arslan, Huseyin; Inal, Behcet
    In this study, a field study was carried out to determine the effect of different irrigation water amounts on dry matter efficiency and silage quality features of species of corn for silage P32K61, P31Y43, P30B74 and the relationship of water and dry matter, as well as the threshold value of the dry substance to be used in silage quality estimation by leveraging such relationship. The study was planned as three repeats in a trial pattern of divided parcels in randomized blocks. Irrigation program was established by reapplication of 100% (I100), 70% (I70), 35% (I35) of the water consumed every 7 days with the drip irrigation method. Thus, the irrigation consists of 1 full and 2 different deficit irrigation. In the study, irrigation water amount applied to I100, I70 and I35 of types P32K61, P31Y43 and P30B74 was 637-653-666; 491-495-509; 342-363-371 mm, respectively, seasonal plant water consumption values were 705-714-738; 559-554-583mm, dry matter efficiency values ranged from 24.38-24.29-32.36, 23.26-23.33-25.5, and 12.8-14.46-14.13 t ha-1. Linear relations were determined between dry matter (DM) efficiency of the species and irrigation water (I) as DM=20.57I+6369(r2=0.997??), DM=30.95I+4340(r2=0.999??), Y=36.14I+5826 (r2=0.998??);and between dry matter-plant water consumption (ETa) values as Y=26.02ETa+832.1(r2=0.969??), Y=36.55ETa- 22.83 (r2=0.995??), Y=42.75ETa-1949 (r2=0.997??). The highest and lowest protein amounts by irrigation were 8.67% in the interaction of I100 irrigation and P32K61 species and 6.14% in the interaction of I35 irrigation and P31Y43 species, respectively; digestible dry matter ratio was 70% in the interaction of I100 irrigation and P30B74 species and 60% the interaction of I35 irrigation and P31Y43, respectively. No statistically significant relation between the ADF (Acid Detergent Fiber) and NDF (Neutral Detergent Fiber) values was found. The highest water consumption efficiency was 4.38 kg/da-mm in I100 irrigation and 3.37 kg/da-mm in I35 irrigation. In addition, thecorrelation coefficient between ET, dry matter and protein amount was r2:0.81?? and r2:0.80??, and a statistically significant positive relationship was observed (p<0.01) between ETa, dry matter and protein amount. As a result of statistical and economic analyses, threshold dry matter efficiency value on which the silage quality starts to drop was determined at 25.5 t ha-1 in I70 irrigation. © 2016 PSP.
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    DETERMINATION OF WATER-YIELD RELATIONSHIP OF COMICE PEAR (PYRUS COMMUNIS L.) VARIETY IRRIGATED BY THE IRRIGATION AUTOMATION SYSTEM (IAS) BASED ON PROGRAMMABLE LOGIC CONTROLLER (PLC)
    (Parlar Scientific Publications (P S P), 2019) Gencoglan, Cafer; Gencoglan, Serpil; Nikpeyma, Yusuf; Ucak, Ali Beyhan
    The aims of this study are to determine water yield relationships of Cornice Pear (Pyrus cornmunis L.) variety irrigated by irrigation automation system (1AS) based on Programmable Logic Controller (PLC). Irrigation treatments consisted of five different irrigation levels as 120% (112o), 100% (boo), 80% (180), 60% (16o) and 40% (140) of the pan evaporation and were carried out in 3 replications according to the design of random blocks. Irrigations were applied to parcels by IAS based PLC when the total amount of water evaporated from Class A Pan was equal to or greater than 35 mm. Soil moisture was measured by sensor (MAS-1) running with dielectric constant of soil in layers of 30 cm at depth of 90 cm of soil profile. Total evaporation of 1104 mm was measured from the Class A Pan by the IAS during the irrigation season. The IAS irrigated Cornice pear variety 27 times during irrigation season. The irrigation interval ranged from 3 to 12 days. The amount of water given to the irrigation treatments of 112o, boo, lso, 16o and 140 in each irrigation were 40-62, 33-52, 26-42, 20-31 and 13-21 mm, respectively. The amounts of evapotranspiration (ET) in irrigation treatments were found to be 1287, 1046, 869, 669 and 527 mm, respectively. Under these conditions, the mean fruit yields from irrigation treatments were 15.3, 12.5, 12.6, 11.3 and 9.8 ton per hectare, respectively. Relationships between fruit yield (ton ha-') and net irrigation water (Inw, mm) and evapotranspiration (ET, mm) were found as Fy = 0.00621nw + 7.0091 (R2 = 0.91**) and Fy = 0.0065ET + 6.552 (R2 = 0.92**), respectively. The yield response factor (ky) was 0.60. As the amount of the applied irrigation water decreased, pear yield also decreased but IWUE and WUE increased. However, there was no statistically difference among the yields of the irrigation treatments. Irrigation scheduling based on a 0.4 and 0.6 crop-pan coefficients and their treatments are recommended to the pear producers experiencing water shortage. Under abundant water conditions, 112o, boo and 180 crop-pan coefficients and treatments are also suggested. The pear producers should not consider that the shoot length of Comice Pear take as irrigation timing criteria. In addition, the result of study also showed that IAS could be used to control drip irrigation system, Class A Pan, irrigation scheduling, and to calculated ET and to measure soil moisture.
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    Drought stress resistance indicators of chickpea varieties grown under deficit irrigation conditions
    (Peerj Inc, 2023) Ucak, Ali Beyhan; Arslan, Huseyin
    The aim of this study was to determine the drought stress resistance of three chickpea cultivars (Inci, Hasanbey and Seckin) grown under water deficit conditions and to discuss the use of yield, crop water stress index and chlorophyll index values as drought stress tolerance indicators in breeding studies. Three drought stress levels, (full irrigation = no stress -I100, deficit irrigation = moderate stress -I50, and no irrigation = severe stress -I0) were used as irrigation treatments. The highest seed yield (1,984 kg ha-1) in severe stress conditions was recorded for the Inci cultivar with a low crop water stress index (CWSI) (0.50) and high chlorophyll index (33.60 SPAD). The lowest seed yield (1,783.66 kg ha-1) in I0 treatment was noted for the Seckin cultivar which had a high CWSI (0.58) and low chlorophyll index (32.88 SPAD). The highest seed yield (2,566.33 kg ha-1) in full irrigation was recorded for the Inci cultivar which had a low CWSI (0.19) and high chlorophyll index (44.39 SPAD), while the lowest seed yield (2,328.00 kg ha-1) in I100 treatment was recorded for the Seckin cultivar which had a high CWSI (0.26) and low chlorophyll index (42.12 SPAD). The seed yield of the Hasanbey cultivar in both severe stress (1,893 kg ha-1) and full irrigation (2,424.00 kg ha-1) conditions was between Inci and Seckin varieties. The chlorophyll index and yield had a significant positive (r = 0.877) correlation, while a significant negative (r = -0.90) relationship was determined between CWSI and yield. Seed yield of the Inci cultivar in I0 and I100 treatments and water use efficiency revealed that the Inci cultivar is resistant to drought stress. Therefore, the Inci cultivar can be used in drought stress tolerance studies. In addition, the CWSI and chlorophyll index values can be employed as resistance indicators in chickpea breeding studies to determine the drought resistant chickpea cultivars.
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    EFFECT OF DEFICIT IRRIGATION IN DIFFERENT PHENOLOGICAL PERIODS ON YIELD AND YIELD PARAMETERS OF SUNFLOWER (HELIANTHUS ANNUUS L.)
    (Parlar Scientific Publications (P S P), 2020) Ucak, Ali Beyhan; Erman, Murat; Arslan, Huseyin; Arslan, Dogan
    This study was carried out to investigate the effects of deficit irrigation in different phenological periods on some yield and agronomic characteristics of sunflower (Helianthus Annuus L.) grown under semi-arid climate conditions during 2018 and 2019 growing seasons. Irrigation treatments were full irrigation (control, I-100), 30% water deficit (I-70) and 65% water deficit (I-35). The results indicated that sunflower yield significantly varied with the phenological periods and the water deficit treatments (p <= 0.01). For the highest water deficit (I-3(5)) condition; the highest yield (2463.33 kg ha(-1)), the lowest CWSI (0.53) and the highest chlorophyll content (CC) (34.33 spad) in the 2018 were recorded in vegetative period (VP), while the lowest yield (2290.00 kg ha(-1)), the highest CWSI (0.59) and the lowest CC (32.00 spad) were obtained in the flowering period (FP). For the full irrigation condition (I-100), the highest yield (3873.33 kg ha(-1)), the lowest CWSI (0.18) and the highest CC (43.33 spad) were recorded in flowering and pollination period (FPP), while the lowest yield (3796.66 kg ha'), the highest CWSI (0.22) and the lowest CC (41.66 spad) were obtained in VP. In the second year, the highest yield (2350.00 kg ha(-1)), the lowest CSWI (0.52) and the highest CC (36.00 spad) for the 1 35 treatment were determined in VP, while the lowest yield (2350.00 kg ha(-1)), the highest CWSI (0.58) and the lowest CC (33.00 spad) were obtained in FPP period. For the I-100 treatment, the highest yield (3946.66 kg ha(-1)), the lowest CWSI (0.17) and the lowest CC (44,33 spad) were recorded in FPP period, while the lowest yield (3856.63 and 3886.65 kg ha(-1)) was obtained in VP and SMP period. The results revealed a significant effect of water deficit and phenological period interaction on seed yield of sunflower. The effects of deficit irrigation in different phenological periods of sunflower on yield and yield parameters were significant. Restricted irrigation during flowering and pollination period should be avoided for an economical and profitable sunflower cultivation. The irrigation can be restricted in the vegetative period, if water deficit is a necessity. Briefly, the results proved that sunflower production is suitable for a sustainable, profitable and disease-free cultivation in semi-arid ecological conditions.
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    Effect of Foliar Application of iron (Fe) and molibydenium (Mo) on yield, protein and nodulation in soybean under agro climatic conditions of Sanliurfa
    (Parlar Scientific Publications, 2020) Erbil, Erdal; Ucak, Ali Beyhan; Tas, Timucin; Karakus, Mehmet; Yetkin, Cemil
    This study was conducted in 2017-2018 at the Gundas Research Station belong to the GAP Agricultural Research Institute in Sanliurfa/Turkey to investigate the effects of iron (Fe) and molybdenum (Mo) on soybean {Glycine max. L.) yield, protein and nodule formation. The study was carried out with four replications in the randomized blocks trial design. Standard NPK dose (100-50-0 kg ha4) was applied in the form of 20-20-0 compound fertilizer. Iron, one of the factors, was added in two doses (0.5 kg ha-1 and 1 kg ha-1) in the form of iron sulphate (FeSO4+7H2O) and molybdenum in the form of ammonium molybdate (NH4)6MO2O24 4H2O) was used as a liquid from the foliar spray. The results showed that application of iron and molybdenum significantly increased the grain yield, number of total and active nodules plant4, biomass yield, 1000 seed weight (g), total nitrogen uptake, protein content in soybean. Furthermore, it was observed that combined application of iron and molybdenum significantly produced greater crop yields and more nodulation than the only application of iron or molybdenum. It is therefore recommended that Fe and Mo may be applied to soybean in Sanliurfa for better crop yields and greater root nodulation. © 2020 Parlar Scientific Publications. All rights reserved.
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    EFFECT OF FOLIAR APPLICATION OF IRON (Fe) AND MOLIBYDENIUM (Mo) ON YIELD, PROTEIN AND NODULATION IN SOYBEAN UNDER AGRO CLIMATIC CONDITIONS OF SANLIURFA
    (Parlar Scientific Publications (P S P), 2020) Erbil, Erdal; Ucak, Ali Beyhan; Tas, Timucin; Karakus, Mehmet; Yetkin, Cemil
    This study was conducted in 2017-2018 at the Gundas Research Station belong to the GAP Agricultural Research Institute in Sanliurfa/Turkey to investigate the effects of iron (Fe) and molybdenum (Mo) on soybean (Glycine max. L.) yield, protein and nodule formation. The study was carried out with four replications in the randomized blocks trial design. Standard NPK dose (100-50-0 kg ha(-1)) was applied in the form of 20-20-0 compound fertilizer. Iron, one of the factors, was added in two doses (0.5 kg ha(-1) and 1 kg ha(-1)) in the form of iron sulphate (FeSO4+7H(2)O) and molybdenum in the form of ammonium molybdate (NH4)(6)Mo2O24 4H(2)O) was used as a liquid from the foliar spray. The results showed that application of iron and molybdenum significantly increased the grain yield, number of total and active nodules plant', biomass yield, 1000 seed weight (g), total nitrogen uptake, protein content in soybean. Furthermore, it was observed that combined application of iron and molybdenum significantly produced greater crop yields and more nodulation than the only application of iron or molybdenum. It is therefore recommended that Fe and Mo may be applied to soybean in Sanliurfa for better crop yields and greater root nodulation.
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    Effects of different irrigation levels on mediterranean corn borer (sesamia nonagrioides lefebvre) populations and effects of fatty acids in corn borer preferences
    (Parlar Scientific Publications, 2017) Ucak, Ali Beyhan; Kaplan, Cevdet; Inal, Behcet; Gencoglan, Serpil
    In this study, effects of different irrigation treatments (I100, I70, I35) on Mediterranean corn borer (Sesamia nonagrioides Lefebvre) populations in different corn genotypes (31D24, ADASA16, P1429) and the effects of fatty acids on corn borer preferences were investigated. The lowest fatty acid content was observed in full irrigation (I100) and the greatest fatty acid content was observed in excessive water deficit (I35) treatment. As the average of two years, the greatest yield (10400 kg ha-1), low number of alive larva + pupa per plant (3.34), tunnel length (9.44 cm) and fatty acid (2.03% ILE Eicosanoic acid, methyl ester (CAS)) were observed in I100x31D24 interaction; the lowest yield (2853.3 kg ha-1) and high fatty acid (46.03% ILE 9.12 Octadecadienoic acid (Z,Z), methyl ester (CAS)) values were observed in I35xP1429 interaction. The greatest Mediterranean corn borer population was observed in full irrigation (I100) and the lowest population was observed in excessive water deficit (I35) treatment. Mediterranean corn borer preferred the genotypes (P1429) with high fatty acid contents. It was concluded that genotypes should be tested under water-stressed and non- water-stressed conditions for resistance to Mediterranean corn borer and alive larva, tunnel length and fatty acids could be used as screening parameters. © by PSP.
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    EFFECTS OF DIFFERENT IRRIGATION LEVELS ON MEDITERRANEAN CORN BORER (SESAMIA NONAGRIOIDES LEFEBVRE) POPULATIONS AND EFFECTS OF FATTY ACIDS IN CORN BORER PREFERENCES
    (Parlar Scientific Publications (P S P), 2017) Ucak, Ali Beyhan; Kaplan, Cevdet; Inal, Behcet; Gencoglan, Serpil
    In this study, effects of different irrigation treatments (I-100, I-70, I-35) on Mediterranean corn borer (Sesamia nonagrioides Lefebvre) populations in different corn genotypes (31D24, ADASA16, P1429) and the effects of fatty acids on corn borer preferences were investigated. The lowest fatty acid content was observed in full irrigation (I-100) and the greatest fatty acid content was observed in excessive water deficit (I-35) treatment. As the average of two years, the greatest yield (10400 kg ha(-1)), low number of alive larva + pupa per plant (3.34), tunnel length (9.44 cm) and fatty acid (2.03% ILE Eicosanoic acid, methyl ester (CAS)) were observed in I(100)x31D24 interaction; the lowest yield (2853.3 kg ha(-1)) and high fatty acid (46.03% ILE 9.12 Octadecadienoic acid (Z,Z), methyl ester (CAS)) values were observed in I(35)xP(1429) interaction. The greatest Mediterranean corn borer population was observed in full irrigation (I-100) and the lowest population was observed in excessive water deficit (I-35) treatment. Mediterranean corn borer preferred the genotypes (P1429) with high fatty acid contents. It was concluded that genotypes should be tested under water-stressed and non water-stressed conditions for resistance to Mediterranean corn borer and alive larva, tunnel length and fatty acids could be used as screening parameters.
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    EFFECTS OF DIFFERENT IRRIGATION LEVELS ON THE MEDITERRANEAN CORN BORER (SESAMIA NONAGRIOIDES LEFEBVRE), EUROPEAN CORN BORER (OSTRINIA NUBILALIS HUBNER) POPULATIONS AND EFFECTS OF PROLINE CONTENT IN CORN BORER PREFERENCES
    (Parlar Scientific Publications (P S P), 2019) Ucak, Ali Beyhan
    In this study, the effects of different irrigation treatments (I-100, I-70, I-35) on the Mediterranean corn borer (Sesamia nonagrioides lefebvre) and on the European corn borer (Ostrinia nubilalis hiibner) populations in different sweet corn (Zea mays saccharataSturt) lines (1025x1026 SADA 13, MERIT, 1023X1024 SADA 12, 1028X1009, BATEM Tatli , 1012X1011 SADA 6) were investigated. As the average the greatest yield (8039.31 kg ha(-1)), low number of live larva + pupa per plant (2.36), tunnel length (4.26 cm) were observed in I-100 x BATEM Tatli interaction while the lowest yield (1917.00 kg ha(-1)) values were observed in I-35 x 1025x1026 SADA13 interaction. The largest Mediterranean corn borer and European corn borer population was observed in full irrigation (I-100) and the lowest population was observed in excessive water deficit (I-35) treatment. The Mediterranean corn borer and European corn borer preferred the 1025x1026 SADA 13 line. It was concluded that the lines should be tested under water-stressed and non-water-stressed conditions for resistance to the Mediterranean corn borer, European corn borer and live larva, tunnel length and proline content could be used as a screening parameter.
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    IDENTIFICATION OF CHICKPEA (CICER ARIETINUM.) GENOTYPES TOLERANT TO WATER STRESS
    (Parlar Scientific Publications (P S P), 2018) Ucak, Ali Beyhan; Erman, Murat; Oguz, Abdulrezak
    The present research was carried out to determine water-stress tolerance of chickpea genotypes (Diyar 95, Arda, Inci, Seckin, Hasanbey) grown under (winter planting), different water conditions [no water-stress (I-100); strong water-stress (10)] in the years 2016 and 2017. Variance analyses revealed significant differences between the genotypes (P < 0.01). As the average of two years, the greatest yield was obtained from no water-stress x genotype interaction (I(100)xHasanbey) with 2681.31 kg ha(-1), the lowest yield was obtained from strong water stress x genotype interaction (I(0)xSeckin) with 1702.17 kg ha(-1). Again as the average of two years, the greatest chlorophyll content was obtained from no water-stress x genotype interaction (I(100)xHasanbey) with 47.78 spad, the lowest value was obtained from strong water stress x genotype interaction (l(0)xSeckin) with 36.81 spad. The greatest crop water stress index was obtained from strong water stress x genotype interaction (I(0)xSeckin) with 0.56, the lowest value was obtained from no water-stress x genotype interaction (I(100)xHasanbey) with 0.18. The Hasanbey genotype with optimum water use efficiency and prominent with crop water stress index and chlorophyll content both in no water stress and strong water stress treatments was identified as water stress-resistant and the genotype was considered to have reliable characteristics potentially to be used in further water stress-resistance studies.
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    IDENTIFICATION OF DROUGHT RESISTANT SUNFLOWER GENOTYPES (HELIANTHUS ANNUUS L.)
    (Parlar Scientific Publications (P S P), 2017) Ucak, Ali Beyhan; Gencoglan, Cafer; Cil, Abdullah; Inal, Behcet
    The present study was conducted under water stress (WS) and stress-free (SF) conditions in randomized blocks design with 3 replications in 2012 and 2013 to determine drought resistance of normal-oleic (Sanbro and Tunca), medium-oleic (Saray and 10TR054) and high-oleic (P64H34 and Oleko) sunflower genotypes. In stress-free treatments, drip irrigations were performed as to bring the soil moisture level to field capacity when 50% of available moisture in effective root depth was depleted. A total of four irrigations were performed in WS treatments, but irrigations were not performed in SF treatments (except for the initial survival water). The differences between the genotypes with regard to investigated parameters were found to be significant (p<0.01). In the first year of experiments, the greatest yields in WS treatments were obtained from Saray and Tunca genotypes (3147-3109 kg ha(-1)) with the lowest crop water index (CWSI=0.29-0.31) and the greatest chlorophyll content (CC=46.6-47.7); the lowest yield (2370 kg hat) was obtained from Sanbro genotype with the greatest CWSI (0.70) and the lowest chlorophyll content (38.8). In SF treatments, the greatest yields (38183646 kgha(-1)) were observed in Tunca and Saray with the lowest CWSI (0.20-0.26) and the greatest CC (50.86 - 50.16); the lowest yield (3163 kgha(-1)) was seen in P64H34 with high CWSI (0.42) and low CC (41.88). In the second year of experiments, the greatest yields (3480-3394 kgha(-1)) in WS treatments were obtained from Tunca and Saray with the greatest CC (46.83 - 51.25) and the lowest CWSI (0.24-0.27); the lowest yield (2793 kgha(-1)) was obtained from P64H34 with the lowest CC (41.28) and high CWSI (0.53). In SF treatments, the greatest yields (4348-4217 kgha(-1)) were observed in Tunca and Saray with the lowest CWSI (0.12-0.17) and the greatest CC (51.66-45.65); the lowest yield (3848 kgha(-1)) was observed in Oleko with the greatest CWSI (0.46) and the lowest CC (40.13). Current findings revealed that the genotypes Tunca and Saray were prominent in both WS and SF conditions with regard to yield, CWSI and CC and they were able to use irrigation water optimally and identified as drought-tolerant genotypes. It was concluded that these genotypes could also be used in further drought-resistance studies. The genotypes Sanbro and 10TR054 with the lowest yield in WS treatments were identified as sensitive genotypes.
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    IDENTIFICATION OF MALTING BARLEY (HORDEUM VULGARE L.) GENOTYPES TOLERANT TO WATER STRESS
    (Parlar Scientific Publications (P S P), 2019) Ucak, Ali Beyhan; Saltuk, Burak
    The present research was carried out to determine water-stress tolerance of malting barley genotypes (Durusu, Firat, Atilir) grown under (winter planting), different water conditions [no water stress (I-100); strong water-stress (I-0)] in the years 2016 and 2017. Variance analyses revealed significant differences between the genotypes (P<0.01). As the average of two years, the greatest yield was obtained from no water-stress x genotype interaction (I(100)x Durusu) with 5613.50 kg ha(-1), the lowest yield was obtained from strong water stress x genotype interaction (I(0)x Atilir) with 3848.82 kg ha(-1). Again as the average of two years, the greatest chlorophyll content was obtained from no water stress x genotype interaction (I(100)x Durusu) with 45.23 spad, the lowest value was obtained from strong water-stress x genotype interaction (Iox Atilir) with 35.80 spad. The greatest crop water stress index was obtained from strong water stress x genotype interaction (I(0)x Atilir) with 0.47, the lowest value was obtained from no water-stress x genotype interaction (I(100)x Durusu) with 0.24. The lowest protein content was obtained from no water-stress x genotype interaction (I(00)x Durusu) with 9.36 %, the greatest value was obtained from strong water stress x genotype interaction (I(0)x Atilir) with 12.98 %. The Durusu genotype with optimum water use efficiency and prominent with crop water stress index, chlorophyll, chlorophyll content and low protein content both in no water-stress and strong water stress treatments was identified as water stress-resistant and the genotype was considered to have reliable characteristics potentially to be used in further water stress-resistance studies. On teh other hand Atilir (malting barley) genotype was identified as water stress-sensitive. As a result decreased protein content and total protein content in plants under no water-stress treatments.
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    Identification of Sunflower (Helianthus annuus L.) Genotypes Tolerant to Water Stress
    (Ankara Univ, Fac Agr, 2018) Ucak, Ali Beyhan
    The present research was carried out to determine water-stress tolerance of linoleic sunflower genotypes (P64LE119, PR63F73, P64LL62) grown under different water stress conditions [no water-stress (I-100); mild water-stress (I-70); strong water-stress (I-35)J in the years 2015 and 2016. Variance analyses revealed significant differences between the genotypes (P<0.01). As the average of two years, the greatest yield was obtained from no water-stress x genotype interaction (I(100)xP64LE119) with 4094.66 kg ha(-1), the lowest yield was obtained from strong water stress x genotype interaction (I(35)xPR63F73) with 2487.81 kg ha(-1). Again as the average of two years, the greatest chlorophyll content was obtained from no water-stress x genotype interaction (I(100)xP64LE119) with 49.83 spad, the lowest value was obtained from strong water stress x genotype interaction (I(35)xPR63173) with 34.39 spad. The greatest crop water stress index was obtained from strong water stress x genotype interaction (I(35)xPR63E73) with 0.53, the lowest value was obtained from no water-stress x genotype interaction (I(100)xP64LE119) with 0.21. The P64LE119 genotype with optimum water use efficiency and prominent with crop water stress index and chlorophyll content both in no water-stress and strong water stress treatments was identified as water stress-resistant and the genotype was considered to have reliable characteristics potentially to be used in further water stress-resistance studies.
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    Molecular and biochemically responses of maize (Zea mays L.) to water deficits
    (Parlar Scientific Publications, 2017) Inal, Behcet; Ucak, Ali Beyhan
    Ever-depleting fresh water resources have forced researchers to search for various different water sources, such as seawater. Therefore, recent studies have focused on water deficits and potential effects of water deficits on biochemical, physiological and molecular characteristics of the plants. In present study, three maize cultivars: (1). 31D24 (Pioneer), (2). ADASA16 (Eastern Mediterranean Agricultural Research Institute), (3). P1429 (Pioneer) were tested under three different irrigation regimes. Irrigation treatments were arranged as I100, I70 and I35. Dreb2A gene expression, soluble sugars (Glucose, Fructose, and Sucrose) and Proline level were measured. The greatest Dreb2A gene expression was observed in I35 treatment and it was respectively followed by I70 and I100 treatments. The greatest total soluble sugar was also detected in I35treatments of all three maize cultivars. Total sugar content consists of sucrose glucose and fructose sugars. Among these sugars, sucrose had the greatest content and it was respectively followed by glucose and fructose. Proline accumulation was higher in deficit irrigation (I35, I70) treatments. Present findings revealed unique outcomes about the effects of water deficits on biochemical, physiological and molecular network profile of corn cultivars. Such outcomes can also be used in further breeding researches to be carried out on maize cultivars. © by PSP.
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    MOLECULAR AND BIOCHEMICALLY RESPONSES OF MAIZE (ZEA MAYS L.) TO WATER DEFICITS
    (Parlar Scientific Publications (P S P), 2017) Inal, Behcet; Ucak, Ali Beyhan
    Ever-depleting fresh water resources have forced researchers to search for various different water sources, such as seawater. Therefore, recent studies have focused on water deficits and potential effects of water deficits on biochemical, physiological and molecular characteristics of the plants. In present study, three maize cultivars: (1). 31D24 (Pioneer), (2). ADASA16 (Eastern Mediterranean Agricultural Research Institute), (3). P1429 (Pioneer) were tested under three different irrigation regimes. Irrigation treatments were arranged as I100, 170 and 135. Dreb2A gene expression, soluble sugars (Glucose, Fructose, and Sucrose) and Proline level were measured. The greatest Dreb2A gene expression was observed in 135 treatment and it was respectively followed by 170 and I100 treatments. The greatest total soluble sugar was also detected in I35treatments of all three maize cultivars. Total sugar content consists of sucrose glucose and fructose sugars. Among these sugars, sucrose had the greatest content and it was respectively followed by glucose and fructose. Pro line accumulation was higher in deficit irrigation (135, 170) treatments. Present findings revealed unique outcomes about the effects of water deficits on biochemical, physiological and molecular network profile of corn cultivars. Such outcomes can also be used in further breeding researches to be carried out on maize cultivars.
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    THE EFFECT OF DIFFERENT IRRIGATION APPLICATIONS ON WATER-YIELD RELATIONS AND QUALITY TRAITS OF LAVENDAN (LAVANDULA INTERMEDIA)
    (Parlar Scientific Publications (P S P), 2020) Ucak, Ali Beyhan; Arslan, Dogan; Arslan, Huseyin; Bayraktar, O. Volkan; Aslan, Emine
    This study was carried out for two years in 2016 and 2017 with the aim of investigating the effects of different irrigation treatments (I0, I50, I100) on some agronomic and quality traits of lavender (Lavandula intermedia) grown under semi-arid climate conditions. Drug flower yield in 2016 was 72.95 kg da(-1) while it was 93.92 kg da(-1) in 2017. The effect of irrigation on yield was not statistically significant, though the yield in 50% irrigation treatment was relatively higher compared to the other two treatments. The results of essential oil content and yield in 2017 were statistically significant and the highest essential oil content (5.5%) and yield (5.17 kg ha(-1)) were obtained from I100 irrigation treatment. Although the results of essential oil ratio and yield in 2016 were not statistically significant, similar to 2017, the highest essential oil ratio and yield (4.75%, 3.27 kg ha(-1)) were obtained from I100 irrigation treatment. The results indicated that irrigation had a significant positive effect on the essential oil content and yield of lavender. The ratio of linalyl acetate, which is the most important component of essential oil, ranged between 18.62 and 22.54% in 2016 and 2017. The results showed that lavender (Lavandula intermedia) can be grown well under semi-arid ecological conditions, however, the continuation of studies on lavender would be useful in making more accurate decisions. Scientific studies focusing on the effects of different irrigation treatments on characteristics of lavender are rare, thus this research is one of the first studies published on the subject. The results demonstrated the importance of irrigation in lavender (Lavandula intermedia) cultivation for essential oil production. The results revealed that irrigation in lavender cultivation has no significant effect on flower yield, but full irrigation (I100) is important to obtain higher essential oil yield.
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    THE EFFECT of DIFFERENT IRRIGATION APPLICATIONS on WATER-YIELD RELATIONS and QUALITY TRAITS of LAVENDAN {LAVANDULA INTERMEDIA)
    (Parlar Scientific Publications, 2020) Ucak, Ali Beyhan; Arslan, Dogan; Arslan, Huseyin; Bayraktar, O Volkan; Asian, Emine
    This study was carried out for two years in 2016 and 2017 with the aim of investigating the effects of different irrigation treatments (I0, I50, I100) on some agronomic and quality traits of lavender (Lavandula intermedia) grown under semi- A rid climate conditions. Drug flower yield in 2016 was 72.95 kg da-1 while it was 93.92 kg da-1 in 2017. The effect of irrigation on yield was not statistically significant, though the yield in 50% irrigation treatment was relatively higher compared to the other two treatments. The results of essential oil content and yield in 2017 were statistically significant and the highest essential oil content (5.5%) and yield (5.17 kg ha-1) were obtained from I100 irrigation treatment. Although the results of essential oil ratio and yield in 2016 were not statistically significant, similar to 2017, the highest essential oil ratio and yield (4.75%, 3.27 kg ha-1) were obtained from I100 irrigation treatment. The results indicated that irrigation had a significant positive effect on the essential oil content and yield of lavender. The ratio of linalyl acetate, which is the most important component of essential oil, ranged between 18.62 and 22.54% in 2016 and 2017. The results showed that lavender (Lavandula intermedia) can be grown well under semi-arid ecological conditions, however, the continuation of studies on lavender would be useful in making more accurate decisions. Scientific studies focusing on the effects of different irrigation treatments on characteristics of lavender are rare, thus this research is one of the first studies published on the subject. The results demonstrated the importance of irrigation in lavender (Lavandula intermedia) cultivation for essential oil production. The results revealed that irrigation in lavender cultivation has no significant effect on flower yield, but full irrigation (1100) is important to obtain higher essential oil yield. © 2020 Parlar Scientific Publications. All rights reserved.