Effect of the Hormone Brassinolide and the Polymer Hydrogel on the Biochemistry Traits of Okra (Abelmoschus Esculentus L.) under Two Different Irrigation Periods

Abstract

Objectives: Effect of hrmone (BR)and (SAP) on the biochemistry traits of okra Abelmoschus Esculentus L.under two different irrigation periods. Mothods: The experiment was conducted in one of the private fields north of Basrah for the growing season 2022-2023. It was included a study of the effect of three factors:the hormone brassinolide(BR) at three concentrations (0,3,6) mg/l and the polymer hydrogel(SAP) at concentrations (0,50,100) g/m2 soil, irrigation periods (3,6) days, and their double and triple interactions. It was designed according to (R.C.B.D.) with three replicates for each treatment and the least significant difference test was adopted at the probability level (0.05( Results: Showed that the treatment of plants with the hormone led to a significant increase in the characteristics of chlorophyll, carbohydrates and stability of the membranes at a concentration of 6 mm / L, and led to a decrease in the concentration of proline, hydrogen peroxide and MDA and the effect of the polymer led to a significant increase in the total chlorophyll content, carbohydrates and membrane stability at a concentration of 100 g / m2 soil. While it reduced the concentration of proline, hydrogen peroxide and MDA as well. Irrigation periods of 3 days showed a significant effect on the carbohydrate content of the leaves, while the differences were negligible for the rest of the traits, and the two-way interactions showed a significant effect on all the studied traits. Conclusions: The triple interactions led to a significant increase in all studied traits at a hormone concentration of 6 mg/L and a polymer at a concentration of 100 g/m2 soil and an irrigation period of 3 days compared to the control treatment and an irrigation period of 6 days except for proline, MDA and hydrogen peroxide.