Aim of this study was to determine the effect of tebuconazole
applications on cucumber seedling via morphological and molecular
methods. In order to determine the most appropriate dose of different
concentrations (25, 50, 75, 100, 125 and 150 ppm) of tebuconazole
affecting the seedling quality and preventing possible genotoxic
effects, retrotransposon motility at all doses was determined.
Polymorphism rates and changes in GTS values were also determined.
At the applied doses, polymorphism values were found as 0%, 5.55%,
16.66%, 38.88%, 55.55% and 61.11%, respectively. The GTS value was
decreased from 100% to approximately 38.89% based on the applied
doses. Statistical evaluations indicated that different dose
applications resulted significant changes in the seedling
characteristics. The seedling and stem heights were suppressed by
57.5% and 55.9%, respectively compared to the controls. The stem
diameter increased 9.95% following the application. Overall, 50, 75
and 150 ppm doses were determined to achieve an increase in the dry
matter and leaf chlorophyll content. In this study, applications of
Tebuconazole at different doses controled the seedling height in
cucumber and affected specific quality characteristics of the seedlings.