عبدالعلی حسامی

The results showed that the growth regulators spray as GA3, SA, krizoval and krizatcin on plant with different concentrations didn’t have significant effect on fruit set and yield. Also, the results indicated that the 50 mM of GA3 created the highest total soluble solid content in tomato fruit so that, was significant in comparison with others treatments. We observed that with increasing growth plant inducers content decreased vitamin C of tomato however the lowest content were related to 50 and 100 mM treatment of Krizoval. It is concluded that plants treated with each of growth regulators not caused satisfactory improvement on fruit set and yield than control but the created changes in soluble solid content in any one of hormones concentrations was significant.