Browsing by Author "Ekincialp, A."

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Comparative Adaptation Responses of Melon (Cucumis Melo L.) Genotypes To Salinity Stress
(Tarbiat Modares Univ, 2021) Erdinc, C.; Inal, B.; Erez, E.; Ekincialp, A.; Sensoy, S.
The objective of this work was to understand the mechanisms of physiological, biochemical, and molecular responses to salinity stress of three Turkish melon genotypes (YYU 1, YYU 4 and CU 196) and cv. Ananas. The study used Randomized Complete Block Design (RCBD) and pots were irrigated with Hoagland nutrient solution after two-leaf stage until harvesting by 50 and 75 mM NaCl concentrations. For evaluation of responses, chlorophyll and carotenoid content, total phenolic and flavonoid amount, proline variations, and nutrient elements were determined. Moreover, qRT-PCR analyses were performed to identify the expression level of six TF (Transcription Factors) genes (WRKY24, TCP15, CmHD-Zip, mTERF2, Dof3 and CmADH2). Increase in salt application led to increase in chlorophyll content in the melon genotypes, but decrease (about 55%) in cv. Ananas. Phenolic, flavonoid, and proline contents varied based on the melon genotypes, but generally increased in Ananas. Expression levels of TCP15 and WRKY24 showed more fold change at 75 mM NaCl treatment. On the other hand, the expression of CmADH2 and Dof3 showed more fold change at 50 mM NaCl treatment. Finally, according to adaptation mechanisms of melon genotypes, the study might help in selection and detection of the salt tolerant ones.
The Differences Among Melon Genotypes and Varieties Under Salt Stress Based on Certain Morphological and Physiological Properties - Mixture Modeling and Principal Component Analysis (Pca)
(Aloki Applied Ecological Research and Forensic inst Ltd, 2019) Ekincialp, A.
Present study aimed to determine the effects of salt stress in 13 melon genotypes and 4 commercial melon varieties collected from the Van Lake Basin. Two doses of salt applications were conducted at 0 mM and 50 mM NaCl concentrations and the plants were cultivated in 3 repeats under 25 +/- 2 degrees C temperature and 16/8 light/dark periods based on the randomized block experimental design in climate chamber conditions. In order to determine the effect of stress, traits such as 0-5 scale, shoot and root lengths, shoot diameters, leaf number, fresh and dry weights of shoots and roots, leaf relative water content, membrane injury index, stoma widths and lengths, stomatal areas and stoma densities were evaluated. The reaction of the genotypes against stress was determined via mixture modeling and PCA analysis. In PCA analysis, three PCA components explained 71.48% of the total variation at 0 mM, while four components explained 69.53% of the total variation at 50 mM. As a result of the mixture modeling analysis, it was observed that 4 sub-populations for 0 mM and 3 sub-populations for 50 mM were formed and it was revealed that the salt-tolerant genotypes were in the sub-population 3 and salt-susceptible genotypes were in the sub-population 1.
The Effects of Amf, Whey and Humic Acid Applications on Plant Growth, Yield and Quality in Different Cucurbit Species Under Open Field Conditions
(Centenary University, 2016) Ekincialp, A.; Erdinç, Ç.; Eser, F.; Demir, S.; Şensoy, S.
This study was carried out to assess the effects of two different Arbuscular Mycorrhizal Fungus (AMF), humic acid (HA) and whey applications on various plant and yield characteristics in melon (Magnum-F1), watermelon (Wonder-F1) and summer squash (Focus-F1) species. At trials implemented in the field, 5 different applications [1-) Control, 2-) AMF, 3-) AMF+Whey, 4-) AMF + HA, and 5-) AMF + Whey + HA] were applied at 4 replications according to randomized block design for all three types of vegetables species. The applications on melon were significant for average yield (28 430 - 41 240 kg ha-1) and average branch length. The applications were significant on watermelon in terms of average yield (51 460-86 580 kg ha-1), average branch length (124.75-165.75 cm), fruit pedicle length; and on summer squash in terms of average yield (27 660-34 540 kg ha-1), TSSC (8.99-10.25 brixº), and weight of fresh leaves. It was observed that the 5th and 4th applications were more superior to the others. According to average yield, especially, the fifth application had the highest mean for all three species. © 2016, Centenary University. All rights reserved.
Evolution of Common Beans Collected From Lake Van Basin for Their Resistance To the Common Bacterial Blight (Xanthomonas Axonopodis Pv. Phaseoli)
(Corvinus Univ Budapest, 2018) Erdinc, C.; Ekincialp, A.; Akkopru, A.; Yildiz, M.; Sensoy, S.
The present study determined the reactions of common bean landraces grown in Lake Van Basin of Turkey against common bacterial blight disease (CBB) caused by Xanthomonas axonopodis pv. phaseoli (Xap). For this purpose 83 bean landraces collected from the basin and two resistant (HR-45, HR-67) and one susceptible (Dresden) lines were evaluated for their reaction to Xap. The experiments were conducted in randomized experimental design with three replications in a growth chamber having 23 +/- 2 degrees C temperature and 16 h light-8 h dark period. Bean seeds were sown in the pots having 2: 1 mixture of peat: perlite and Xap inoculated by spraying when the seedlings reached two trifoliate leaves stage. Disease severity was assessed three weeks after Xph inoculation using 1-5 scale. In light of the findings, it was detected that there was a variation with regard to tolerance to the disease among common bean landraces. While fourteen landraces were assigned as resistant against CBB, 49 landraces were found to be moderately susceptible to CBB. The present study demonstrated the existence of resistance sources against CBB within Lake Van Basin bean landraces that could potentially be used for breeding resistant cultivars.
Investigation of Responses of Some Bean (Phaseolus Vulgaris L.) Genotypes To Different Levels of Salt Stress
(Centenary University, 2017) Fidan, E.; Ekincialp, A.
In this study, it was aimed to investigate the responses of 20 different bean genotypes to different levels of salt stress. In the study, the reactions of 20 different bean genotypes at 25 mM and 50 mM NaCI were investigated. Salt application was carried out for 4 consecutive days with irrigation water. At the end of the study, 0-5 scale, number of leaves, shoot diameter, shoot length, shoot dry and fresh weights and nutrient elements (Na, Ca and K) in the bean genotypes were determined in order to determine the tolerance to salinity. According to the results obtained at the end of the study, it was determined that there were significant differences in tolerance between the genotypes. According to the scale 0-5, it was found that there was significant developmental retardation especially in the group receiving 50 mM salt dose. In parallel with the increase of applied salt concentration, the shoot size, leaf number, shoot diameter, shoot age weight, K, K / Na and Ca / Na ratio decreased; Ca and Na content were increased. © 2017, Centenary University. All rights reserved.
Response of Four Zucchini (Cucurbita Pepo L.) Hybrids To Different Arbuscular Mycorrhizal Fungi
(Pakistan Agricultural Scientists Forum, 2011) Sensoy, S.; Demir, S.; Tufenkci, S.; Erdinc, C.; Demirer, E.; Unsal, H.; Ekincialp, A.
Four zucchini hybrids (Focus F-1, Comet F-1, Natali F-1, and Ezra F-1) inoculated by three different arbuscular mycorrhizal fungi (AMF) [Glomus intraradices (Gi), Glomus etinucatum (Ge), and Gigaspora margarita (Gm)] in a growth chamber experiment were evaluated for seedling traits, nutrient uptake, colonization, and relative mycorrhizal dependency (RMD). Relative mycorrhizal dependency ranged widely among four zucchini hybrids. Gm inoculations had higher positive RMDs, while Gi inoculations had lower negative RMDs. Gm-inoculated Focus F-1 had the highest RMD (30.22%). Arbuscular mycorrhizal fungi inoculated seedlings had wider cotyledons and stems. There were also significant effects of AMF inoculation on the most of nutrients.