Investigate of Biochemical and Yield Traits Dragon’s Head Ecotypes Using Some Anti-Transpirant Agents In Rain-Fed Condition

In order to evaluate the biochemical properties of dragon’s head (Lallemantia iberica L.) ecotypes’ using some anti-perspirants in rainfed conditions in the crop year 2018, an experiment has been conducted in Karaj and Khorramabad regions. The experiment is based on a randomized complete block design (RCBD) with a factorial arrangement, consisted of three replications. The first factor involves four different ecotypes of dragon’s head (Kurdistan, Takab, Nazarkahrizi, and Kalibar) and the second factor includes three anti-transpirant compounds (kaolin with a concentration of 5%, chitosan with a concentration of 1%, and Ista with a concentration of 2%) as well as no anti-transpirant (control). The results show that using anti-transpirants has increased the amount of the activity of catalase and peroxidase enzymes. Ista anti-transpirant has had a greater effect on enzyme activity than kaolin and chitosan. The highest amount of peroxidase and catalase (0.51-0.39 unit mg/protein) are obtained from the ecotypes of Kurdistan treated with Ista and Karaj cultivation, respectively. In addition, the highest grain yield and biomass yield are obtained from treatment with chitosan, which has increased by 4% to 20%, compared to the control, respectively. Based on the results, using anti-transpirants in dryland cultivation conditions improves most of the studied yield traits and biochemical traits compared to the control.