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Öğe Comparison of some local melon genotypes selected from Lake Van Basin with some commercial melon cultivars for some yield and quality related traits observed in field and high tunnel conditions(ACADEMIC JOURNALS, 2008) Erdinc, Ceknas; Turkmen, Onder; Sensoy, SuatThis study aimed to compare some local melon (Cucumis melo L.) genotypes selected from the Lake Van Basin (65 ER 02, 65 ER 04, and 13 TAT 05) with some commercial melon cultivars (Ananas, Makdimon F(1), and Rambo F(1)) for some yield and quality related traits observed in field and high tunnel conditions for two years. At the end of the study, it was determined that Makdimon F(1) produced the highest early and total yields (14.76 and 30.51 t ha(-1), respectively). While the locally selected melon genotype 65 ER 04 followed Makdimon F(1) for the early yield (11.43 t ha(-1)), the locally selected genotype 65 ER 02 followed Makdimon F1 for the total yield (22.49 t ha(-1)). The cultivars Rambo F(1) and Makdimon F(1) had higher soluble solid contents than the others.Öğe Determination of suitable sowing dates for spinach production in Van ecological condition(2011) Sensoy, Suat; Turkmen, Onder; Gorgun, YaseminVan koşullarında ıspanak yetiştiriciliği için uygun ekim zamanlarını belirlemek amacıyla iki yıl yürütülen bu çalışmada, sonbahar ekimi-ilkbahar hasadında üç ekim zamanı (Ekim ayı ortası, Kasım ayı başı ve ortası), ilkbahar ekimi-ilkbahar hasadında ise dört ekim zamanı (Mart ayı ortası, Nisan ayı başı, ortası ve sonu) uygulanmıştır. Birinci yıl Meridian ve Spinoza çeşitleri, ikinci yıl ise sadece Spinoza çeşidi kullanılmıştır. İlk yıl tohum ekim zamanları içerisinde en yüksek toplam verim, ortalama 4.00 t/da ile Ekim ayı ortası ekim zamanından elde edilmiştir. İlk yıl Spinoza çeşidinin ortalama verimi, Meridian çeşidinin ortalama veriminden 0.31 t/da daha yüksek bulunmuştur. İkinci yıl tohum ekim zamanları içerisinde en yüksek toplam verim, 4.57 t/da ile yine Ekim ayı ortası ekim zamanından elde edilmiştir. Her iki yılda da ilkbahar ekimlerinde sapa kalkma sorunuyla karşılaşılmıştır.Öğe Molecular genetic diversity in lake van basin melons (cucumis melo l.) based on rapd and issr markers(2013) Erdınc, Ceknas; Ekıncıalp, Aytekin; Yıldız, Mehtap; Kabay, Turgay; Türkmen, Önder; Sensoy, SuatTürkiye Van Gölü Havzası kavunun ikincil gen merkezinde yer almaktadır. Van Gölü Havzasından toplanan otuz yedi kavun genotipi arasındaki moleküler genetik çeşitlilik, RAPD ve ISSR belirteçleri yardımıyla belirlenmiştir. Sekiz adet RAPD ve 10 adet ISSR primerinden elde edilen toplam 121 polimorfik moleküler belirteç, kavun genotipleri arasındaki genetik ilişkilerin karakterizasyonunda kullanılmıştır. Grup içi genetik benzerlik katsayısının 0.55 ve 1.00 arasında değiştiği; benzer bölgelerden toplanan genotiplerin veya akraba genotiplerin benzer kümelerde yer aldığı gözlenmiştir. Van Gölü Havzası kavun genotipler arasında genetik çeşitlilik parametreleri olarak H 0.175, I 0.231 ve % 96.19 polimorfizm belirlenmiştir.Öğe Responses of some different pepper (Capsicum annuum L.) genotypes to inoculation with two different arbuscular mycorrhizal fungi(ELSEVIER SCIENCE BV, 2007) Sensoy, Suat; Demir, Semra; Turkmen, Onder; Erdinc, Ceknas; Savur, Orcun BurakEight different pepper genotypes inoculated by two different arbuscular mycorrhizal fungi (AMF) [Glomus intraradices (Gi) and Gigaspora margarita (Gm)] in a growth chamber experiment under normal seedling growing conditions were evaluated for seedling traits, colonization and relative mycorrhizal dependency (RMD). In general, inoculated plants had greater dry weights compared to non-inoculated plants. Five cultivars responded positively to inoculation with AM fungi and three responded negatively. A great variation in mycorrhizal colonization dependency was observed among the pepper genotypes, with the N52 genotype showing the highest RMD and the Karaisali genotype the lowest. RMD and dry weights of pepper genotypes were inversely correlated. (C) 2007 Elsevier B.V. All rights reserved.Öğe Sewage sludge and farmyard manure ratios in growing media affect nutrient and heavy metal contents in cucumber(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2006) Sensoy, Suat; Turkmen, Onder; Cirka, Mustafa; Dursun, Atilla; Tufenkci, SerikThis study aimed to determine the effects of substituting sewage sludge for farmyard manure in seedling growing, media on the total dry weight, as well as nutrient and heavy metal contents of cucumber plants. Seedling growing, media consisted of 2:1:2 soil (S), pumice (P) and an organic fertilizer mixture [farmyard manure (FM) + sewage sludge (SS)]. Then, SS was progressively substituted for FM, at rates of 0%, 25 %, 50%, 75 %, and 100%. Treatments were placed in a growth chamber. No additional nutrients were applied. Dry weight, and Fe, Mn, B, Zn, Cu, Mo and Cd contents were found to increase with increases in SS ratios. Conversely, N, P, K, Ca, Mg and S contents increased with increases in FM ratios. Applications of 0:1 and 1:3 FM:SS ratios provided the best results based on dry weight of seedlings; however, when plant nutrient an heavy metal contents were taken into consideration, 1:1 and 3:1 FM:SS ratios were found to be preferable.Öğe TOXIC EFFECTS OF EXCESS Cu2+ AND Zn2+ ON GROWTH AND SOME ANTIOXIDANT ENZYMES OF TOMATO (Solanum lycopersicum L.)(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2010) Bozkurt, Mehmet Ali; Sensoy, Suat; Celik, Ismail; Turkmen, Onder; Bitiktas, AyseguelThe toxic effects of excess Cu2+ and Zn2+ doses on growth of tomato seedlings were studied in a pot experiment with the measurement of fresh and dry biomass of the plants. The toxic effects of both elements were evaluated by measuring copper and zinc accumulations, glutathione S transferase (GST) and superoxide dismutase (SOD) activities in tomato plants. The doses were 0, 150, 300, 450, and 600 mg kg(-1) of copper as well as 0, 250, 500, 750 and 1000 mg kg(-1) of zinc, and two separate pot experiments were conducted for these metals. The experimental results demonstrated that the excess Cu2+ and Zn2+ applications inhibited the growth of tomato seedlings and diminished their biomasses. The applications increased copper and zinc accumulations in the shoots and roots in comparison to control treatments. The accumulations were markedly higher in the roots than those in the shoots. The excessive Cu2+ amounts caused significant decreases in the GST and SOD activities of the roots. However, the SOD activities in the shoots significantly increased with excessive Cu2+ doses. The excessive Zn2+ applications significantly affected the GST activities in the shoots and the SOD activities in the roots. Both enzyme activities in the roots decreased with excessive Cu2+ and Zn2+ applications. This study shows that GST and SOD activities in tomatoes may be used as sensitive indicators of copper and zinc toxicity.
