The Improvement of Thermotolerance in Tall Fescue and Perennial Ryegrass Pretreated with Exogenous H₂O₂

Abstract:

The effect of hydrogen peroxide (H₂O₂) of low concentration on thermotolerance of tall fescue (Festuca arundinacea cv. Barlexas) and perennial ryegrass (Lolium perenne cv. Accent) was studied following a foliar pretreatment with 10 mM H₂O₂. Turfgrass quality, relative water content (RWC), oxidative damage were measured in both cool-season turfgrass cultivars under heat stress (38/30 °C, day/night) and control normal temperature (26/15 °C, day/night). Pre-treated plants of two cultivars showed the lower MDA and H₂O₂ levels and the higher turfgrass quality and RWC under heat stress. Our results demonstrated that exogenous H₂O₂ of the low concentration improved the thermotolerance of tall fescue and perennial ryegrass by inducing the antioxidative enzyme activities and alleviating the oxidative damage.

• Periodical: Advanced Materials Research (Volumes 610-613)
• Pages: 239-242
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.610-613.239
• Online since: December 2012
• Authors: Jie Zhang, Yan Wang, Hong Fei Yang, Jian Long Li
• Keywords: Antioxidant, Cool-Season Turf Grass, Heat Stress

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