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| DOI: | 10.21273/HORTSCI11228-16 |
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| Publication Type:
| Refereed |
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| Author(s): | Mohamadi, Mohamad Hossein Sheikh;
Etemadi, Nematollah;
Nikbakht, Ali;
Pessarakli, Mohammad |
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| Author Affiliation: | Mohamadi, Etemadi, and Nikbakht: Department of Horticulture, College of Agriculture, Isfahan University of Technology, Isfahan, Iran; Pessarakli: School of Plant Sciences, The University of Arizona, Tucson, AZ |
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| Title: | Physiological responses of two cool-season grass species to trinexapac-ethyl under traffic stress |
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| Source: | HortScience. Vol. 52, No. 1, January 2017, p. 99-109. |
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| Publishing Information: | Alexandria, Virginia: American Society for Horticultural Science |
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| # of Pages: | 11 |
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| Keywords: | TIC Keywords: Agropyron desertorum; Brinkman Traffic Simulator; Festuca arundinacea; Growth regulator evaluation; Traffic damage; Trinexapac-ethyl
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| Abstract/Contents: | "Traffic stress is one of the major abiotic stresses that limits grass growth in lawn fields. The severity of losses depends on several factors, including the number of events per season, the athlet″ic field size, and the soil moisture content during the traffic incident. Trinexapac-ethyl (TE) is considered to influence plant tolerance to traffic stress. Therefore, the physiological responses of the wheatgrass (Agropyron desertorum L.) and tall fescue (Festuca arundinacea L. cv. Rebel) species to different levels of TE and traffic stress were investigated. A factorial experiment including combination of TE application and traffic stress treatments was performed based on a randomized complete block design (RCBD) with three replications in 2014 and 2015. The treatments, including traffic stress (traffic and nontraffic stress) and TE at three levels (0, 0.25, and 0.5 kg″ha-1), were applied once every 3 weeks. The simulated traffic stress was imposed using a Brinkman traffic simulator (BTS). The results showed that traffic stress reduced the turf quality, relative water content (RWC), total chlorophyll content, and antioxidant activity and increased electrolyte leakage (EL), soluble sugar content (SSC), and malondialdehyde (MDA) in both species. Conversely, TE increased the turf quality, RWC, SSC, and total chlorophyll and resulted in less EL and MDA in both species. Furthermore, TE application increased the superoxide dismutase (SOD) (EC 1.15.1.1), ascorbate peroxidase (APX) (EC 1.11.1.11), and peroxidase (POD) (EC 1.111.1.7) activities, especially under traffic stress conditions. TE application enhanced the resistance to traffic stress in both species by improving the osmotic adjustment and antioxidant activity." |
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| Language: | English |
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| References: | 38 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mohamadi, M. H. S., N. Etemadi, A. Nikbakht, and M. Pessarakli. 2017. Physiological responses of two cool-season grass species to trinexapac-ethyl under traffic stress. HortScience. 52(1):p. 99-109. |
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| DOI: 10.21273/HORTSCI11228-16 |
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MSU catalog number: b2217685a |
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