chlorophyll-a and trinexapac-ethyl

Drought stress is the major limiting factor which affects turfgrass management in area with restricted rainfall or irrigation water supply. Trinexapac ethyl (TE), Paclobutrazol (PAC) and Abscisic acid (ABA) are three plant growth regulators (PGRs) that are commonly used on turf species for increasing their tolerance to different environmental stresses such as drought. However, little is known about the impact of PGRs on stress tolerance of Iranian Perennial ryegrass (Lolium perenne). The present study was conducted to examine the visual and physiological changes of Iranian Perennial ryegrass in response to foliar application of TE, PAC, and ABA under drought stress conditions. According to the obtained results, application of all three PGRs considerably restored visual quality of drought exposed plants. TE treatment increased chlorophyll content, proline content and resulted in less malondialdehyde (MDA) in drought stressed Perennial ryegrass. Application of all PGRs enhanced the relative water content (RWC) and decreased the electrolyte leakage (EL) and Hydrogen peroxide contents (H

Topics: Abscisic Acid; Antioxidants; Carbohydrates; Chlorophyll; Cyclopropanes; Electrolytes; Gene Expression Profiling; Gene Expression Regulation, Plant; Hydrogen Peroxide; Lolium; Malondialdehyde; Plant Leaves; Proline; Quinones; Real-Time Polymerase Chain Reaction; Solubility; Stress, Physiological; Triazoles; Water