Katyonik Gemini Surfaktant (10-2-10), (12-2-12) ve Ticari Surfaktant CTAB’nın Allium cepa L. Üzerindeki Fitotoksik Etkisi
Anahtar Kelimeler:
Allium cepa L, Cationic Gemini surfactant, CTAB, Effect of surfactant, (10-2-10), (12-2-12).Özet
In this study, the phytotoxic effects of cationic Gemini surfactants of the alkanediyl-a- ω -bis (alkyldimethylammonium) dibromide
type, with different alkyl groups, referred to as ‘‘m-s-m’’(m = 10 and 12) and conventional surfactant hexadecyltrimethylammonium
bromide, CTAB) on Allium cepa L. were examined. These dimeric surfactants were synthesized and purified in our laboratory. During the 7
days the phytotoxic effects on root growth were observed at the laboratory conditions. Surfactants used in study were prepared at three
different surfactant concentrations, 0.624, 0.312 and 0.156 g/L (w/v) concentrations. The phytotoxicity results were based on the effective
concentration that reduced root growth by 50 % (EC50). Some differences were observed between the effects of three types of cationic
surfactants. While the largest inhibitory effects occur in Gemini (10-2-10), the smallest inhibitory effects occurred in Gemini (12-2-12) at
0.156 g/L concentration. . It was observed that inhibitory effects increased with increasing concentrations of in all cationic surfactants.
