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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 THE PERFORMANCE OF SOME SOYBEAN (GLYCINE MAX (L.) MERR.) VARIETIES / LINES
    (Parlar Scientific Publications (P S P), 2018) Arslan, Huseyin; Onder-Ucar, Ozge; Arslan, Dogan
    This study was conducted to determine the performance of some soybean (Glycine max (1.) men.) varieties/lines in the 2014 and 2015 growing seasons. It was designed as a randomized block experimental design with four replications at the Kezer Campus of Siirt University. Essential factors such as yield (kg ha(-1)), plant height (cm), first pod height (cm), number of pods per plant (number/plant), and thousand-seed weight (g) were determined. According to the results of pooled two-year variance analysis, line 834 produced the lowest seed yield (1798.7 kg ha(-1)), while variety Gapsoy 16 produced the highest seed yield (2672.1 kg ha(-1)). Besides variety Gapsoy 16, line 1022 (2639.2 kg ha(-1)) came to the forefront in terms of seed yield. Considering the first pod height, line 1022 reached the highest value in two years. The first pod height of the first year in general appeared to be higher than that of the second year. This may be associated with the timing of first irrigation. The examined characteristics varied under the influence of different climatic and soil conditions in both years. Based on the two-year average oil ratios, variety Turksoy had the highest value (17.35%). With regard to the two-year average protein ratios, line 1021 had the highest ratio (34.14%). As a result, the differences between the characteristics of lines/varieties and years were found to be statistically significant. Results of the two-year study show that soybean can be grown successfully in Siirt province if irrigated and that variety Gapsoy 16 and line 1022 give the highest yields.
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    Determination of the performance of some soybean (Glycine max (L.) merr.) varieties/lines
    (Parlar Scientific Publications, 2018) Arslan, Huseyin; Onder-Ucar, Ozge; Arslan, Dogan
    This study was conducted to determine the performance of some soybean (Glycine max (l.) merr.) varieties/lines in the 2014 and 2015 growing seasons. It was designed as a randomized block experimental design with four replications at the Kezer Campus of Siirt University. Essential factors such as yield (kg ha-1), plant height (cm), first pod height (cm), number of pods per plant (number/plant), and thousand-seed weight (g) were determined. According to the results of pooled twoyear variance analysis, line 834 produced the lowest seed yield (1798.7 kg ha-1), while variety Gapsoy 16 produced the highest seed yield (2672.1 kg ha-1). Besides variety Gapsoy 16, line 1022 (2639.2 kg ha-1) came to the forefront in terms of seed yield. Considering the first pod height, line 1022 reached the highest value in two years. The first pod height of the first year in general appeared to be higher than that of the second year. This may be associated with the timing of first irrigation. The examined characteristics varied under the influence of different climatic and soil conditions in both years. Based on the two-year average oil ratios, variety Türksoy had the highest value (17.35%). With regard to the two-year average protein ratios, line 1021 had the highest ratio (34.14%). As a result, the differences between the characteristics of lines/varieties and years were found to be statistically significant. Results of the two-year study show that soybean can be grown successfully in Siirt province if irrigated and that variety Gapsoy 16 and line 1022 give the highest yields. © by PSP.
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    Economical Analysis of Chamomile (Matricaria recutita L.) Cultivars, Flower Yields Which are Obtained from Different Sowing Times and Row Spacing
    (Galenos Publ House, 2019) Arslan, Dogan; Bayraktar, Onder Volkan; Temel, Mukremin; Bayram, Emine
    This study was conducted with split-split plots experimental design based on four replications in the ecological conditions of Yalova in the area of Ataturk Central Horticultural Research Institute in growing seasons of 2008-2009 and 2010-2011. In the study three chamomile (Matricaria recutita L.) cultivars (Bona, Bodegold and Zloty Lan) and a genotype, which was collected from the flora of Yalova Province, were used as material. There were four cultivars/genotypes, three sowing time (early November, early October, end of October) and four rows spacing (15 cm, 30 cm, 45 cm, 60 cm). Sowing times were constructed to main plots, cultivars/genotypes to sub plots and row spacing to sub-sub plots. The highest gross profit was calculated as 8818.33 (sic)ha(-1) in first time of Zloty Lan cultivar at 15 cm row spacing. Although the Yalova genotype has the lowest cost, the gross profit among the cultivars/genotypes has been the lowest genotype.
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    Effect of deficit irrigation in different phenolocical periods on yield and yield parameters of sunflower {iieliantiils annuus l.)
    (Parlar Scientific Publications, 2020) Ucak, Ali Bevhan; 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 (Helianlhus Annuus L.) grown under semi-arid climate conditions during 2018 and 2019 growing seasons. Irrigation treatments were full irrigation (control, Iioo), 30% water deficit (I70) and 65% water deficit (I35). 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 (I35) 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 ha1), the highest CWSI (0.59) and the lowest CC (32.00 spad) were obtained in the flowering period (FP). For the full irrigation condition (Iioo), 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"1), 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 ha1), the lowest CSW1 (0.52) and the highest CC (36.00 spad) for the I35 treatment were determined in VP, while the lowest yield (2350.00 kg ha1), the highest CWSI (0.58) and the lowest CC (33.00 spad) were obtained in FPP peri-od. For the Iioo 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 ha1) 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. © 2020 Parlar Scientific Publications. All rights reserved.
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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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    Effects of different aspects and harvest times on essential oil ratio and components of wild thyme (Thymbra spicata L. var. spicata)
    (Parlar Scientific Publications, 2020) Aslan, Emine; Arslan, Dogan
    The study was carried out to determine the quality characteristics of Thymbra spicata L. var. spicata which has a natural distribution in the flora of Siirt province, Turkey. The dried leaves and flowers of Thymbra spicata L. var. spicata, which is used in folk medicine in Anatolia, are consumed as spices and tea, and young shoots are used as salads. The essential oil content of the plant varies between 0.5 and 3.4%. A significant portion of essential oil in Thymbra spicata L. var. spicata is composed of carvacrol. In this study, essential oil ratio and essential oil components of Thymbra spicata L. var. spicata collected from different aspects (north, south, east, west) and at different harvest times (pre-flowering, full flowering and post-flowering) were determined. The samplings were carried out according to the split plots into randomized blocks experimental design with 4 replications. The results showed that essential oil ratio varied between 2.13 and 3.15%. The highest essential oil ratio (3.15%) was obtained from the west aspect during the full flowering period, while the lowest essential oil ratio (2.13%) was obtained from the east aspect at post-flowering period. A total of 38 components were identified in the essential oil as 19 main components and 19 others in very small quantities (total of 2%). The main component of the essential oil was carvacrol (39.29-65.97%). © 2020 Parlar Scientific Publications. All rights reserved.
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    EFFECTS OF DIFFERENT ASPECTS AND HARVEST TIMES ON ESSENTIAL OIL RATIO AND COMPONENTS OF WILD THYME (THYMBRA SPICATA L. VAR. SPICATA)
    (Parlar Scientific Publications (P S P), 2020) Aslan, Emine; Arslan, Dogan
    The study was carried out to determine the quality characteristics of Thymbra spicata L. var. spicata which has a natural distribution in the flora of Siirt province, Turkey. The dried leaves and flowers of Thymbra spicata L. var. spicata, which is used in folk medicine in Anatolia, are consumed as spices and tea, and young shoots are used as salads. The essential oil content of the plant varies between 0.5 and 3.4%. A significant portion of essential oil in Thymbra spicata L. var. spicata is composed of carvacrol. In this study, essential oil ratio and essential oil components of Thymbra spicata L. var. spicata collected from different aspects (north, south, east, west) and at different harvest times (pre-flowering, full flowering and post-flowering) were determined. The samplings were carried out according to the split plots into randomized blocks experimental design with 4 replications. The results showed that essential oil ratio varied between 2.13 and 3.15%. The highest essential oil ratio (3.15%) was obtained from the west aspect during the full flowering period, while the lowest essential oil ratio (2.13%) was obtained from the east aspect at post-flowering period. A total of 38 components were identified in the essential oil as 19 main components and 19 others in very small quantities (total of 2%). The main component of the essential oil was carvacrol (39.29-65.97%).
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    Effects of Different Geographical Aspects and Ontogenetic Variability on Total Hypericin Content of Hypericum triquetrifolium Turra. and Hypericum scabrum L.
    (Tech Science Press, 2020) Aslan, Emine; Arslan, Dogan
    The present study was conducted to determine the total hypericin contents of Hypericum triquetrifolium Tuna. and Hypericum scabrum L. species which are naturally distributed in the flora of Siirt province, Turkey. Hypericin contents of Hypericum species grown in different geographical aspects (North, South, East, and West), and it was measured at different harvest times (full blooming and post blooming period). In the current study, it has been determined that total hypericin content varies considerably according to aspects, plant developmental stages (ontogenetic variance), and species. According to species x aspect interaction, the highest total hypericin content was recorded from the west aspect (3.13 mg/g) in Hypericum triquetrifolium, while, the lowest hypericin content was also obtained from the west aspect (1.22 mg/g) in Hypericum scabrum. When the highest total hypericin content was analyzed according to aspect x species x harvest time interaction, the highest total hypericin content was produced from Hypericum triquetrifolium at the harvest of west aspect with 5.28 mg/g, while the minimum amount of hypericin was obtained from the same aspect in Hypericum scabrum with 0.50 mg/g. In species x harvest time interaction, the highest total hypericin content was obtained from the full bloom (3.10 mg/g) harvest in Hypericum triquetrifolium, while the lowest hypericin was obtained from the full bloom (1.26 mg/g) harvest in Hypericum scabrum. The data suggest that the average total hypericin content was 2.26 mg/g in Hypericum triquetrifolium and 1.28 mg/g in Hypericum scabrum.
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    Effects of treatments of gibberellic acid, citric acid and stratification on germination of seeds of Salvia siirtica Kahraman, Celep & Dogan sp. nov. (Lamiaceae)
    (Nobel Science and Research Center, 2017) Arslan, Dogan; Çiğ, Arzu; Arslan, Hüseyin; Bayraktar, Önder Volkan; Tülücü, Faruk
    Salvia siirtica Kahraman, Celep & Dogan sp. nov. (Lamiaceae) have been recently reported as a new species from southeaster Turkey. It is currently grown in remote areas, where locally adapted and sparsely populated. The study will be of paramount importance for understanding of germination behavior in Salvia siirtica, possibly due to encouraging its propagation, but not being endangered. For this reason, conducted a study, consisting of a set of germination tests, under the tissue culture laboratory. In this study, Salvia siirtica seeds were treated with gibberellic acid (24 h and 48 h in GA3 of 250 mg l-1), citric acid (5 and 10 min in its solution of 4 %) and stratification (14 and 28 day in fine sand maintaining in refrigerator of + 4 °C). Experiment was set up in completely randomized factorial design with three replications. Comparing with control, sole gibberellic acid treatment or combined with other treatments had no effect on Salvia siirtica germination and rooting behavior. But, combined effects of citric acid and stratification treatments were statistically significant (p < 0.01). The highest germination and rooting rates (21.25 and 17.97 %, respectively) were measured on stratification treatment of 28 day.
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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.