40 research outputs found

    The changes of fruit quality parameters at using of different eggplant rootstock/scion combinations which growing under salt and drought stress

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    Effects of drought and salt stress on fruit quality in grafted plants, which salt and drought tolerance Mardin Kızıltepe (MK), Burdur Merkez (BM) and sensitive Kemer (K), Artvin Hopa (AH) as scion genotypes were grafted on the salt tolerance commercial eggplant as rootstocks (Köksal and Vista). This study was carried out in glasshouse where controlled temperature and humidity. For drought stress, plant-available water, 50% was consumed for irrigation. The salinity level determinated as 6 dS m-1 (EC) with NaCl. The end of the experiment, fruit dry weight (DW), fruit juice EC level, titratable acidity (TA), soluble solid content (SSC), vitamin C (Vit C) contents were investigated. These parameters values were increased with drought and salinity; however fruit pH level was decreased. In the grafted plants on Köksal and Vista rootstock, fruit juice EC level, soluble solid content and Vit C content increased under drought conditions compared to control plants. As a result, using of tolerance rootstock in grafting was found effectively improving of fruit quality under drought condition in eggplant

    Comparison of salinity effects on grafted and non-grafted eggplants in terms of ion accumulation, MDA content and antioxidative enyzme activities

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    Grafting onto resistant/tolerant rootstocks is known to alleviate the negative effects of abiotic stress factors like salinity by enhancing their enzymatic antioxidant defense system and having more efficient nutrient uptake. This study was carried out under greenhouse conditions, different rootstock/scion eggplant combinations were grown under two salinity treatments 1.8-2 dS/m (control) and 6-7 dS/m (stress) with seven eggplant genotypes as rootstocks (commercial and Turkish genotypes). Two genotypes were used as the scion. Leaf MDA and ions (Na+, Cl-, K+ and Ca++) content, antioxidant enzymes activity were evaluated as indicators for plant tolerance level. It was found that the rootstock-grafted plants were more efficient in preventing Na+ ions to be transferred to the plants upper parts and had higher SOD, CAT, and APX activity levels compared to the self- and non-grafted plants which resulted in better tolerance and growth in these plants

    Salinity stress effect on morphological and physiological properties in giant reed (Arundo donax L.) [Kargı Kamışı (arundo donax L.)’nda tuz stresinin morfolojik ve fizyolojik Özelliklere etkisi]

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    Salinity is a significant abiotic stress factor that threatens agriculture in both arid and semiarid environments, affecting over 20% of the world’s irrigated land. In the present study, we have investigated that effects of different salinity levels (0, 50, 100, 150, 200, and 250 mM NaCl) in giant reed (Arundo donax L.). Salt treatment was started as 50 mM and this concentration was increased day after day, and finally 250 mM concentration of NaCl was applied until harvest time. Stress responses of the giant reed were measured in early plant development stage. In conclusion, the giant reed showed large variation in their response to salt tolerance in different salt levels. The morphological parameters were reduced with increasing salt concentrations; important decreases occurred with 100 mM NaCl and the lowest values were obtained with 250 mM. The highest 0-5 symptoms score were determined in 250 mM levels. The fresh and dry weight, fresh and dry root weight decreased 27-60% and 13-77% compared to control groups, respectively. While the relative water content was obtained 85% in control plants, this parameter decreased 52.5% ration in 250 mM salt level. The increasing salt stress caused decreasing in chlorophyll content. With increasing of salt levels, Na ion content increased on the other hand K and Ca ions contents diminished. The results obtained from this experiment show that high salinity reduced plant growth and development in giant reed. In these levels, 150 mM NaCl concentration was determined at critical dose for plant development. © 2019, Centenary University. All rights reserved

    Topçu Deresi alt havzasında yağış-sediment ilişkilerinin belirlenmesi ve benzer havzalara uygulama olanaklarının araştırılması

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    TEZ3934Tez (Yüksek Lisans) -- Çukurova Üniversitesi, Adana, 2001.Kaynakça (s. 46-51) var.vii, 51[4] s. ; 30 cm.

    Çukurova koşullarında farklı buğdaygil yem bitkilerinde biçim sıklığının bazı vejetatif ve generatif özelliklere etkisinin saptanması

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    TEZ4290Tez (Yüksek Lisans) -- Çukurova Üniversitesi, Adana, 2002.Kaynakça (s. 60-70) var.vii, 70 s. ; 30 cm.…Bu çalışma Ç.Ü. Bilimsel Araştırma Projeleri Birimi Tarafından Desteklenmiştir. Proje No:FBE.2001.YL.8

    Kavunlarda kuraklık ve tuzluluğa toleransın fizyolojik mekanizmaları arasındaki bağlantılar

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    TEZ7846Tez (Doktora) -- Çukurova Üniversitesi, Adana, 2010.Kaynakça (s. 317-355) var.xx, 356 s. : rnk. res. ; 29 cm.In this study, designating the resistant and sensitive melon genotypes initially, determination of the defense the antioxidative enzyme activity, ion regulation with citrulline mechanisms of tolerant or sensitive genotypes cultivated under saline and drought conditions and revealing the possibility of existence of relationships between defense mechanism in tolerances against to such two stress conditions were aimed to investigate. For this aim, 31 melon genotypes were evaluated with respect to some growth parameters and physiological changes via an overall screening. According to the obtained results, the investigated parameters were repeated in specific screening stage by using 20 genotypes which were selected and divided into three groups as tolerant, medium-tolerant, and sensitive. With respect to overall findings, in order to perform detailed physiological investigations by determining salt and drought resistant CU 159 and CU 196 genotypes, salt and drought sensitive CU 40 and CU 252; they were evaluated in terms of ion regulation, antioxidative enzyme activities (GR, CAT, APX, SOD), antioxidant amounts (Vitamin C, SH compounds) and citrulline changes. At the end of the study, it was observed that salinity and drought inhibited the plant growth in melon genotypes and these genotypes differed in terms of reactions to stress factors. Especially, it was also investigated that examining the activities of CAT and GR enzymes with citrulline were remarkably effective by means of investigation of tolerance aptitude to salt and drought. According to the results, similar mechanisms of salt and drought stresses were observed while ion regulation and enzymatic changes of melon genotypes were further affected by salt stress.Bu çalışmada, 31 adet kavun genotipi içinden seçilen tolerant ve hassas kavun genotipleri ile tuz ve kuraklık stres koşullarında geliştirilen korunma mekanizmalarının araştırılması ve bu iki farklı strese toleransın fizyolojik mekanizmaları arasındaki ilişki ve bağlantılar olup olmadığının ortaya çıkarılması, iyon regülasyonu, antioksidatif enzim aktiviteleri ile sitrullinin kuraklık ve tuzluğa toleransta etkilerinin araştırılması amaçlanmıştır. Genel tarama aşamasında, 31 adet farklı kavun genotipi bazı büyüme parametreleri ve fizyolojik değişimler bakımından değerlendirilmiştir. Elde edilen sonuçlar ışığında tuz ve kuraklığa tolerant, orta düzeyde tolerant ve hassas olarak belirlenen 20 adet kavun genotipi ile özel tarama aşamasına geçilerek incelenen parametreler tekrarlanmıştır. Tüm bu sonuçlara göre ayrıntılı fizyolojik çalışmaların gerçekleştirilebilmesi için tuz ve kuraklığa tolerant CU 159 ve CU 196 no'lu genotipler; tuz ve kuraklığa hassas CU 40 ve CU 252 no'lu genotipler belirlenerek iyon regülasyonu, antioksidatif enzim aktiviteleri (GR, CAT, APX, SOD), antioksidan miktarları (Vitamin C, SH Bileşikleri) ve sitrullin değişimleri bakımından değerlendirilmiştir. Çalışma sonucunda, tuz ve kuraklığın kavun genotiplerinde bitki büyüme ve gelişmesini engellediği, kavun genotiplerinin stres faktörlerine karşı farklı tepkiler verdiği belirlenmiştir. Özellikle CAT ve GR enzim aktiviteleri ile sitrullinin kavunlarda tuz ve kuraklığa toleransta oldukça etkili olduğu belirlenmiştir. Elde edilen sonuçlar ışığında tuz ve kuraklık streslerinin benzer mekanizmaları harekete geçirdiği, iyon regülasyonu ve enzimatik değişimler çerçevesinde kavun genotiplerinin tuz stresinden daha fazla etkilendiği belirlenmiştir.Bu çalışma Ç.Ü. Bilimsel Araştırma Projeleri Birimi tarafından desteklenmiştir. Proje No: ZF2006D21

    Katılara adsorbe refrakter toksik organik maddelerin sulu ortamda ileri oksidasyon yöntemleri ile parçalanmalarının incelenmesi

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    TEZ4617Tez (Doktora) -- Çukurova Üniversitesi, Adana, 2003.Kaynakça (s. 126-143) var.xiii, 143 s. ; 30 cm.…Bu çalışma Ç.Ü. Bilimsel Araştırma Projeleri Birimi Tarafından Desteklenmiştir. Proje No:fbe2001d3

    Çukurova Koşullarına uygun çim tür ve karışımlarının belirlenmesi ve performanslarının saptanması

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    TEZ7156Tez (Doktora) -- Çukurova Üniversitesi, Adana, 2009.Kaynakça (s.294-305) var.xviii, 306 s. : res. ; 29 cm.This study has been conducted in Cukurova conditions (37°00.57,05.N, 35°21.30,27.E). Field trials have been conducted for 30 months (between November, 2004 and April, 2007), arranged in triple experiments; cool season turf grass species (pure stands of 21 cultivars belonging 9 species), the recommended and commercially selling turf mixtures (23 mixtures composing 9 species at different ratios), and cool and warm season turf species (6 components including, pure stands of 2 species, 4 turf mixtures of 4 species at different ratios). ..Bu ara t?rma, serin mevsim çim bitkisi türleri (saf ekimler; 9 tür, 21 çe it), kar? ?mlar? (kar? ?m ekimler; 9 tür, 23 kar? ?m) ve serin-s?cak mevsim çim bitkisi türleri (saf; 2 tür, 3 çe it ve kar? ?m ekimler; 4 tür, 4 kar? ?m) olarak 3 ayr? deneme eklinde, Çukurova ko ullar?nda (37°00.57,05.N, 35°21.30,27.E) Kas?m 2004-Nisan 2007 aras?nda 30 ay süreyle yürütülmü tür. Serin mevsim çim bitkisi türlerinde kam? s? yumak ve tavusotu türleri kalite, renk ve bitki ile kapl? alan de erleri bak?m?ndan, bu iki türü izleyen çok y?ll?k çim ise kam yumakla birlikte bitki örtüsü yüksekli i, ye il ot verimi ve kuru ot verimi bak?m?ndan, rizomlu k?rm?z? yumak ile birlikte de çimlenme süresi ve kaplama h?z? bak?m?ndan di er türlere üstünlük sa lam? t?r. Apache, Cochise, Tracenta, Highland, Ovation, Delaware dwarf, Raymond, Medina ve Franklin çe itleri incelenen özelliklerde genellikle üstünlük sa layan çe itlerdirBu çalışma Ç.Ü. Bilimsel Araştırma Projeleri Birimi Tarafından Desteklenmiştir. Proje No:ZF2005KAP8 TÜBİTAK TOVAG 104 O 13

    Hümik asitler üzerine chlorpyrifos ve methilparathion'un adsorbsiyonu

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    TEZ2465Tez (Yüksek Lisans) -- Çukurova Üniversitesi, Adana, 1997.Kaynakça (s. 58-61) var.vii, 61 s. ; 30 cm.…Bu çalışma Ç.Ü. Bilimsel Araştırma Projeleri Birimi Tarafından Desteklenmiştir

    Determination of convenient nitrogen doses for broccoli production and fluctuations in nitrogen contents in leaf and head

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    Brokolide azotlu gübre ihtiyacının belirlenebilmesi amacıyla yapılan bu çalışmada farklı dozlardaki azot uygulamalarının brokolide verim ve taç çapı üzerine etkileri ile yaprak ve taçta toplam azot içeriğinin değişimi incelenmiştir. Araştırmada bitkisel materyal olarak Marathon brokoli çeşidi kullanılmıştır. Denemede 0, 6, 12, 18, 24, 30 ve 36 kg/da N dozları kullanılmıştır. Çalışma sonucunda taç çapında meydana gelen değişimlerin istatistiksel olarak önemsiz olduğu, en yüksek verimin ise azotun 30 kg/da dozundan elde edildiği saptanmıştır.In this study, nitrogen requirement of broccoli, effects of different doses of nitrogen on yield, head diameter and fluctuations in nitrogen contents in leaf and head were investigated. Marathon broccoli cultivar was used as the plant material. In N applications 0, 60, 120, 180, 240, 300 and 360 kg ha1ha^{-1} doses were applied. At the end of the study, changes in head diameter were not statistically significant, while the highest yield was obtained from 300 kg ha-1 N application
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