Effect of Titanium Dioxide and Titanium Dioxide-Silver Nanoparticles on Seed Germination of Lettuce (Lactuca sativa)

Öz

The aim of this study was to evaluate the effects of TiO2 and TiO2Ag nanoparticles on seed germination of lettuce (Lactuca sativa). Two parameters were examined in this study: number of seed germination and root-shoot elongation. Lettuce seeds in petri dishes were separately treated with different concentrations (control, 10, 20, 40, 60, 80 and 100 mg/L) of 5 mL TiO2 and TiO2Ag nanoparticle suspensions. Number of seed germination was increased at increasing TiO2 nanoparticles concentration especially at 80 and 100 mg/L TiO2 with compared to control and also determined that radicle increased with TiO2 and TiO2Ag treatment at 20 mg/L and 10 mg/L respectively.

Anahtar Kelimeler

• Lactuca sativa,Nanotoxicology,Phytotoxicity,Seed germination

Titanyum Dioksit ve Titanyum Dioksit-Gümüş Nanopartiküllerinin Marul (Lactuca sativa)Tohumunun Çimlenmesine Etkisi

Öz

Bu çalışmanın temel amacı TiO2 ve TiO2Ag nanopartiküllerinin marul (Lactuca sativa) bitkisinin tohum çimlenmesine etkisinin değerlendirilmesidir. Çalışmada iki farklı parametre değerlendirilmiştir: tohum çimlenme sayısı ve kök-gövde uzaması. Marul tohumları petri kaplarına yerleştirildikten sonra farklı derişimlerdeki (kontrol, 10, 20, 40, 60, 80 ve 100 mg/L) 5’er mL TiO2 ve TiO2Ag nanopartikül süspansiyonlarına maruz bırakılmıştır. Sonuçta marul tohumlarının çimlenme sayılarının nanopartikül derişimi arttıkça arttığı ve bu artışın özellikle 80 ve 100 mg/L TiO2 konsantrasyonlarında gerçekleştiği belirlenmiştir. Ayrıca kök radikula uzamasının 20 mg/L TiO2 ve 10 mg/L TiO2Ag nanopartikül derişimlerinde artış gösterdiği tespit edilmiştir.

Anahtar Kelimeler

• Lactuca sativa,Nanotoksikoloji,Fitotoksisite,Tohum çimlenmesi

Kaynakça

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