Full TGIF Record # 317053
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/134556
    Last checked: 03/28/2022
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Fan, Qianqian; Jespersen, David
Author Affiliation:Fan: Crop and Soil Science Department, University of Georgia-Griffin, Griffin, GA; Jespersen: Crop and Soil Sciences, University of Georgia, Griffin, GA
Title:Assessing heat tolerance in creeping bentgrass genotypes based on physiological responses
Section:C05 turfgrass science
Other records with the "C05 turfgrass science" Section

Turfgrass physiology and abiotic stress oral (includes student competition)
Other records with the "Turfgrass physiology and abiotic stress oral (includes student competition)" Section
Meeting Info.:Salt Lake City, Utah: November 7-10, 2021
Source:ASA, CSSA and SSSA International Annual Meetings. 2021, p. 134556.
# of Pages:1
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
Abstract/Contents:"Creeping bentgrass (Agrostis stolonifera L.) is a cool-season turfgrass with many desirable attributes and is particularly suited for golf course greens. However, with the continuous increase in average global temperature, improving thermotolerance in creeping bentgrass is becoming more urgent. Therefore, the objective of this study was to assessing heat tolerance of different creeping bentgrass breeding lines compared against commercial cultivars which form a range of thermotolerance and identify associated physiological traits. Ten genotypes were selected to grow in growth chamber and exposed to control (20/15┬░C day/night) and high temperature (38/33┬░C day/night) treatments. AU Victory was the top performer whereas Crenshaw consistently poorly performed among these five commercial cultivars considering all the parameters measured. S11 729-10 was the most heat tolerant while S11 675-02 was the most sensitive among five breeding lines with that S11 729-10 presenting superior performance to AU Victory whereas S11 675-02 showing similar physiological responses to Crenshaw, considering the changes in turf quality rating (TQ), green percent cover, photochemical efficiency (Fv/Fm), electrolyte leakage (EL), total chlorophyll content, the contents of malondialdehyde (MDA) as well as protein when exposed to heat stress. The heat-tolerant S11 729-10 was able to better maintain cell membrane stability and minimize oxidative damage as well as protein change as detected by insignificant changes in EL, MDA content plus total protein content throughout the trial compared to other genotypes. Results indicating variability in the level of heat tolerance and associated mechanisms in creeping bentgrass germplasm could be utilized to develop new cultivars with enhanced thermotolerance for use specifically in the Southeastern United States."
Language:English
References:0
Note:This item is an abstract only!
"118-2"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fan, Q., and D. Jespersen. 2021. Assessing heat tolerance in creeping bentgrass genotypes based on physiological responses. Agron. Abr. p. 134556.
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https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/134556
    Last checked: 03/28/2022
    Requires: JavaScript
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