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Öğe Dry matter partitioning and salt tolerance via salicylic acid treatment in strawberry plant under salt stress(KAHRAMANMARAS SUTCU IMAM UNIV REKTORLUGU, 2019) Aras, Servet.; Eşitken, Ahmet.The objective of this experiment was to investigate the effects of exogenous salicylic acid (SA) on strawberry plants under NaCl stress. The strawberry (Fragaria x ananassa Duch.) cv Kabarla was used in the experiment. Until the beginning of the experiment, all plants were irrigated with tap water and 1-month after planting, all plants were applied with three different SA doses (1, 2 and 4 mM) and were watered with 35 mM NaCl solution. Control and salt plants were not applied with SA, salt plants were watered with NaCl solution and compared to controls. Three months after the salinity (in March), salt stress decreased root volume by 37% compared to control. Overall, 4 mM SA and control had the highest values of root tissue density (0.113 and 0.117 g cm(-3), respectively). Moreover, 4 mM SA treatment increased stomatal conductance by 87% compared to salt plants. The dry matter was less partitioned to roots in salt stressed strawberry plant. Dry matter partitioning between shoots and roots was differently affected by supply of SA under salinity condition.Öğe Morphological and physiological responses and some WRKY genes expression in cherry rootstocks under salt stress(SPANISH NATL INST AGRICULTURAL & FOOD RESEARCH & TECHNOLO, 2019) Aras, Servet.; Eşitken, Ahmet.; Karakurt, Yaşar.Aim of study: To determine morphological, physiological and molecular responses of cherry rootstocks under salt stress condition. Area of study: Konya, Turkey. Material and methods: A pot trial was conducted to assess moderate salt stress (35 mM NaCl) effects on cherry rootstocks (CAB-6P, MaxMa 14 and Mazzard). We have evaluated many morphological and physiological parameters and analyzed WRKY genes (WRKY25, WRKY33 and WRKY38) under salinity conditions. Main results: All rootstocks survived with slight leaf burn under salinity conditions and the plant growth and physiological parameters, except membrane permeability, decreased in all rootstocks. The membrane permeability increased with salinity and the lowest increment in the membrane permeability (12.17%) was in MaxMa 14, while CAB-6P and Mazzard showed higher levels of increases reaching 46.81 and 56.42%, respectively. Furthermore, the expression of WRKY25, WRKY33 and WRKY38 genes was significantly increased by salinity. The rankings of the WRKY genes expression levels among control rootstocks were: MaxMa 14 < CAB-6P < Mazzard. Research highlights: CAB-6P, MaxMa 14 and Mazzard rootstocks were found relative salt-tolerant at the moderate salinity levels and there is a cross-talk between physiological and molecular responses. Mazzard had higher tolerance to salinity shown in molecular responses. The study possesses importance for plant physiologists and cherry growers as it showed how cherry rootstocks respond to salt stress.Öğe Physiological effects of photoselective nets in strawberry plant(KAHRAMANMARAS SUTCU IMAM UNIV REKTORLUGU, 2019) Aras, Servet.; Eşitken, Ahmet.The sunlight manipulation can be utilized to promote the desired plant physiology by using photoselective nets. In our study, we tested different colored nets to determine the physiological responses of the strawberry plant. The study was conducted in 2016 at Selcuk University in Turkey. A strawberry (Fragaria x ananassa Duch.) cv Kabarla was used in the study planted in 7 L pots. Before the shading treatment, all plants were grown outdoors. For the shading experiment, sunlight was declined by red, green and black nets allowing 40% shade with covering from July until September of 2016 (during 2 months). At the end of the experiment, some physiological and microclimate properties were evaluated. The green net showed the highest SPAD value (39.79), while the lowest value was obtained in red net (34.99). The photoselective nets increased anthocyanin compared to control. Stomatal conductance in the red colored net decreased by approximately 38% when compared to full sunlight. The lowest soil temperature was observed under green colored net. Colored nets increased air temperature compared to control. As a result, the mitigative effect of the photoselective nets against radiation could be used to decrease the malignant effects of environmental stresses such as drought, excessive solar radiation, salinity.Öğe SNP mitigates malignant salt effects on apple plants(SPRINGER, 2020) Aras, Servet.; Keles, Hakan.; Eşitken, Ahmet.Sodium nitroprusside (SNP) a nitric oxide donor is utilized as an antioxidant under stress conditions in order to mitigate stress damages. To probe into the potential relieving salinity malignant effects, we investigated the protective roles of SNP. An apple plant (Malus domestica Borkh.) cv. Fuji grafted on MM106 and M9 clonal rootstocks was chosen for the experiment and imposed to salinity stress for 4 months with 35 & x202f;mM NaCl. SNP with different three doses (1, 2 and 4 & x202f;mM) was applied to the roots of the salt-stressed apple plants except control. SNP applications inhibited apple plants growth depression through increasing stomatal conductivity, chlorophyll and protein content and decreasing electrolyte leakage and lipid peroxidation. Beside that, SNP triggered chlorophyll biosynthesis and maintained better cell membrane stability compared to control. In cv. Fuji/MM106, 1 & x202f;mM SNP application had the highest SPAD value (48.6) even more than control plants (44.8). 4 & x202f;mM SNP showed the highest stomatal conductivity (313 & x202f;mmol & x202f;m(-2)& x202f;s(-1)) and the lowest value was obtained from salt plant (141 & x202f;mmol & x202f;m(-2)& x202f;s(-1)). In cv. Fuji/M9, 4 & x202f;mM SNP elevated the protein content by 73% compared to control. Information from current experiment SNP can be utilized to improve soil management practises under salt stress condition. Moreover, SNP affected apple plants through antioxidant mechanism, but did not have impact on osmotical adjustment.