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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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    Öğe
    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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    Öğe
    Seed inoculation with Rhizobium japonium bacteria improved fatty acid composition of different soybean (Glycine max L.) genotypes
    (Elsevier, 2024) Ozcinar, Aynur Bilmez
    Background Soybean is an important crop for food security as it fulfills global oil requirements. Seed inoculation with bacteria is frequently used to increase its production; however, it could change the seed composition. Nevertheless, the genotypes respond differently to the bacteria. Therefore, it is necessary to assess the impact of Rhizobium bacteria on the seed composition. Methods This two-year (2018 and 2019) study investigated the effects of seed inoculation with Rhizobium japonicum on fatty acid composition of different soybean genotypes. Three frequently cultivated soybean genotypes, i.e., 'Gapsoy16 ', 'Traksoy', and '& Idot;lksoy' were included in the study. The seeds were either inoculated with R. japonicum or sown without inoculation. The fatty acid profile, i.e., saturated fatty acids (palmitic and stearic acid) and unsaturated fatty acids (oleic, linoleic, linolenic, and arachidic acids) was determined, and the collected data were analyzed by single and multivariate analysis. Results Seed inoculation with R. japonicum significantly altered the fatty acid composition of different genotypes; however, varied effects were recorded for the genotype. Linoleic acid, oleic acid, and palmitic acid made up similar to 33 % of total fatty acids in seeds. Linoleic acid contents varied between 30.78-34.02 %, whereas oleic acid contents ranged between 27.85-31.04 %. Similarly, palmitic acid contents differed between 15.53-16.93 %. The '& Idot;lksoy' and 'Gapsoy' had the highest contents of palmitic and oleic acids, respectively. Overall, inoculation of bacteria increased the composition of unsaturated fatty acids and lowered saturated fatty acids. Conclusion Seed inoculation with R. japonicum increased the essential fatty acid composition in 'Traksoy' genotype. However, '& Idot;lksoy' genotype recorded a decrease in unsaturated fatty acids. Therefore, 'Traksoy' can be inoculated with R. japonicum to improve fatty acid profile.