Full TGIF Record # 317056
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/137326
    Last checked: 03/28/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Kaur, Ravneet; Jespersen, David; Schwartz, Brian M.
Author Affiliation:Kaur: Agricultural and Environmental Sciences, University of Georgia-Athens, Griffin, GA; Jespersen: Crop and Soil Sciences, University of Georgia-Griffin, Griffin, GA; Schwartz: Department of Crop and Soil Sciences, University of Georgia-Tifton, Tifton, GA
Title:Quantifying drought avoidance in zoysiagrass
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. 137326.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Zoysiagrass (Zoysia spp.), is a hardy perennial warm-season grass that forms dense and persistent ground cover and is well adapted for its use as turf for lawns, golf courses and athletic fields. However, prolonged hot and dry weather conditions can cause drought stress in warm-season grasses which induces dormancy during their active growth stage, negatively affecting their growth. Water use in turfgrass is defined as the total amount of water required for its growth and transpiration, along with the evaporative loss of water from the underlying soil and is expressed as Evapotranspiration (ET). However, high ambient temperatures during drought increase the water potential gradient between the soil and atmosphere can intensify water consumption and impose water stress on zoysiagrass. Studies on mechanism of drought resistance in zoysiagrass suggest drought avoidance as its possible stress response pathway. During drought avoidance, plants maintain essential water levels by minimizing the water loss and increasing water uptake. Deep rooting for maximum soil water absorption, reduced ET rates to minimize water loss from leaves, and high-water use efficiency (WUE) are essence of drought avoidance strategy. Among zoysiagrass germplasm accessions in the US, the phenotype and inherent ability to tolerate drought stress varies drastically within the cultivars and species. This genetic variability is being exploited to screen and develop varieties that are sustainable in terms of water consumption and thus are resource efficient. The focus of this research will be on quantifying drought avoidance traits in Zoyisa japonica and Zoysia matrella and their hybrids. It will incorporate screening for key traits like stomatal conductance (gs), osmotic adjustment (OA), rooting depth and water use efficiency. The study will be conducted in two phases, a greenhouse study followed by field study. Preliminary results from greenhouse study suggest few genotypes performing drastically better than others in extended drought periods."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kaur, R., D. Jespersen, and B. M. Schwartz. 2021. Quantifying drought avoidance in zoysiagrass. Agron. Abr. p. 137326.
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    Last checked: 03/28/2022
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