Full TGIF Record # 317052
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/133894
    Last checked: 03/28/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Chapman, Cathryn; Daddio, Ryan; Qu, Henry Yuanshuo; Huang, Bingru
Author Affiliation:Chapman: Pequannock, NJ; Daddio, Qu, and Huang: Plant Biology, Rutgers University, New Brunswick, NJ
Title:Genotypic variation in heat tolerance for hard fescues
Section:C05 turfgrass science
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Turfgrass physiology and abiotic stress oral (includes student competition)
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Meeting Info.:Salt Lake City, Utah: November 7-10, 2021
Source:ASA, CSSA and SSSA International Annual Meetings. 2021, p. 133894.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Hard fescues (Festuca spp.) are cool-season grasses widely utilized for their low input requirements. Heat tolerance is a highly desirable trait for cool-season grasses, including hard fescues, that experience increased summer temperatures above the optimal level. The purpose of this study was to screen 240 genotypes of hard fescue plants for heat stress tolerance in environmentally controlled growth chambers. Hard fescue plants with unique and different genotypes were propagated from established stock plants and maintained in a greenhouse in individual pots for 7 weeks until plants were fully established. Plants were then transferred into a controlled-climate growth chamber for 7 d prior to initiation of heat stress treatment. The plants were exposed to heat stress treatment (35/ 30 Ā°C day/night) for 35 d. Throughout heat stress, visual and digital assessments were performed, including turf quality (TQ), normalized difference vegetation index (NDVI), and % canopy cover (as a measurement of canopy density). Photos were taken weekly under identical light conditions. The canopy temperature of each plant was also measured using a thermal infrared camera to determine the level of heat stress damage. Preliminary results from the study determined that heat tolerance varied by hard fescue genotype, and certain genotypes had better performance indicated by increased TQ, NDVI, and % canopy cover, and less heat stress damage indicated by decreased canopy temperatures. NDVI and percent canopy cover obtained with imaging technology were effective indicators of determining heat tolerance level of hard fescue that support the subjective turf quality rating by visual evaluation. Such knowledge can be of use for improving breeding selections to help promote sustainable turfgrass growth during summer months in areas that utilize low input hard fescues under prolonged heat stress conditions."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chapman, C., R. Daddio, H. Y. Qu, and B. Huang. 2021. Genotypic variation in heat tolerance for hard fescues. Agron. Abr. p. 133894.
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    Last checked: 03/28/2022
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