Nalan TÜRKOĞLU, Levent AYYILDIZ, Füsun GÜLSER

Mevsimlik Çiçeklerde Tuzun Bitki Gelişimine Etkisi

Bu araştırmada Tagates erecta L.(Kadife çiçeği) Petunia hybrida L.(Kahkaha çiçeği) ve Gazania splendes L.(Gazanya,Koyungözü) türlerinin tuz stresine karşı (0mM, 0,20 mM, 40 mM, 60 mM, 80 Mm NaCl) reaksiyonları kontrollü koşullarda test edilmiştir. Bitki tohumları torf ortamında çimlendirilmiş kotiledon yaprakları oluştuğunda ise,saf halde arazilerden alınan ve şaşırtma poşetlerine konan topraklara şaşırtılmıştır. Sulamada kullanılan su, saf su olup tuz konsantrasyonlarının hazırlanmasında da kullanılmıştır. Bitkiler hazırlanan (0,20 mM, 40 mM, 60 mM, 80 Mm NaCl) konsantrasyonlarında hazırlanan tuzlu su ile her gün ve 10ml olacak şekilde sulanmıştır. Bitkilerin tuz stresine toleransını inceleyebilmek için laboratuar koşullarında bitkisel analizler (toplam yaş ağırlık analizi, gövde-kök yaş ağırlık analizi,bitki boyu analizi, gövde, kök ve toprak analizleri (toprak tekstürü, toprak reaksiyonu, tuz içeriği, organik madde, azot, alınabilir klor) yapılmıştır.Araştırmadan elde edilen sonuçlara göre Kadife ve petunya 40mM,Gazanya 60mM tuza toleranslı bulunmuştur.Gövde çapı,kök uzunluğu,gövde uzunluğu,bitki boyu kök yaş ağırlığı,gövde yaş ağırlığı gibi bitki gelişim parametreleri için 40mM’den yüksek dozda ki tuzlu suyla sulamada olumsuz etkiler göstermişve bütün parametreler için istatistik olarak önemli bulunmuştur.Artan tuzluluk oranının 40mM’ün üzerinde bitki gelişimini olumsuz etkilediği,80mM’de ise ölümle sonuçlandığı saptanmıştır.

Anahtar Kelimeler:

Tek yıllık, tuz, NaCl, Stres

The Effect of Salinity on Plant Growth in Seasonal Flowers

In this study, Tagetes erecta L. (Velvet Flower), Petunia hybrida L. (Laughter Flower) and Gazania splendens L. (Gazania, Koyungözü) F1 species were tested under controlled conditions against salt stress (0 mM, 20 mM, 40 mM, 60 mM and 80 mM NaCl). Seeds were germinated in peat; when cotyledon leaves were formed, the seedlings were transplanted into plastic bags containing natural soil. Distilled water is used to prepare the different salt concentrations. Plants were irrigated with 10 ml of saline water at 20 mM, 40 mM, 60 mM and 80 mM NaCl concentrations every day. In order to investigate salt stress tolerance of plants, plant analysis (total fresh weight analysis, stem and root wet weight analyses, analysis of plant height, stem, root and leaf length analyses, analyses of leaf number, stem diameter, and determination of fresh weight ratios) and soil analysis (soil texture, soil acidity, salt content, organic substance analysis, nitrogen, available phosphorus, exchangeable potassium, calcium and sodium levels, available chlorine level) were conducted in laboratory conditions. According to the results of the study, Tagetes erecta, Petunia hybrida, and Gazania splendens were found to be salt tolerant to 40 mM, 40 mM, and 60 mM of salt, respectively. It was shown that concentration of 40 mM NaCl and above for irrigation showed signi cant negative effects for plant growth parameters such as stem diameter, stem length, plant height, root fresh weight, fresh stem weight and concentrations above 80 mM NaCl resulted in death.

Keywords:

Salinity, ornamental plants, tolerance,

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Altunal E.E., Apan M., 2007. Farklı tuzluluk düzeyindeki sula- ma suyunun Biberde (Capsicum annuum L.) bazı büyüme, gelişme ve verim parametrelerine etkisi Ç.Ü. Basılmamış Doktora tezi)
Bouyoucous, G. D., 1951. A Recablibration of the Hydrometer Method for Making Mechanical Analysis of the Soil. Agrono- my J., 43 434- 438
Jackson, M.L., 1962. Soil Chemical Analysis. Prentice Hall Inc. En- gle Wood Cliff-New Jersey.
Kacar, B., 1984. Bitki Besleme Uygulama Kılavuzu.Ankara Üniver- sitesi Ziraat Fakültesi Yayınları: 900, Uygulama Kılavuzu:214, Ankara, 140s.
Kratsch, H., Olsen, S., Rupp, L., Cordan, G., He ebower, R., 2008. Soil Salinity and Ornamental Plant Selection. Utah State Uni- versity, Cooperative Extension Publications, p8.
Olsen, S.R., V. Cole, F.S. Watanabe, L.A. Dean, 1954. Estimations of Available Phosphorus in Soils by Extractions with Sodium Bicarbonate. U.S. Dept. Of Agric. Cric. 939-941.
Pitman, MG., Lauchli A., 2002, Global impact of salinity and ag- ricultural ecosystem. In, Salinity:Environment-Plants-Mole- cules, A Lauchli and U Luttge (Eds) Kluwer Academic Pub- lishers, Dordrecht, 3-20.
Richards, L.A., 1954. Diagnosis and Improvement of Saline and Alkaline Soils. Handbook 60. U.S. Dept. of Agriculture
Seçkin, B., 2010. Tuzluluk Stresinin Bazı Arpa Türleri (Horde- um spp.) Üzerindeki Fizyolojik ve Biyokimyasal Etkilerinin Araştırılması. Ege Üniversitesi Fen Bilimleri Enstitüsü Dok- tora Tezi, 62 s.
Taleisnik, E., Peyrano, G., Arias, C., 1997. Response of chloris gayana cultivars to salinity. 1. Germination and Early Vegeta- tif Growth. Trop. Grassl. 31: 232- 240.
Walkey, A., 1947. A Critical Examination of a Rapid Method for Determining Organic Carbon in Soils: Effect of Varations in Digestion Conditions and Inorganic Soil Constiuents. Soil Science, 63: 251-263
Winer, B.J., Brown, D.R, Michels, K.M., 1991. Statistcal Prin- ciples in Experimetal Design, Thitd Edition, Boston, USA. 902 p.
Zhu, J.K., 2003. Regulation of ion homeostasis under salt stress. Curr. Opin. Plant Biol. 6, 441-445.