Full TGIF Record # 317031
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Web URL(s):https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/136473
    Last checked: 03/24/2022
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Publication Type:
Content Type:Abstract or Summary only
Author(s):McBride, Sean; Rossi, Stephanie; Murphy, James A.; Huang, Bingru
Author Affiliation:McBride: Rutgers University, N Wildwood, NJ; Rossi: Plant Biology and Pathology, Rutgers University, New Brunswick, NJ; Murphy and Huang: Plant Biology, Rutgers University, New Brunswick, NJ
Title:Differential physiological responses to heat and drought stress for annual bluegrass and creeping bentgrass
Section:Golf turf management oral: Cultural practices, physiology, and water (includes student competition)
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C05 turfgrass science
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Meeting Info.:Salt Lake City, Utah: November 7-10, 2021
Source:ASA, CSSA and SSSA International Annual Meetings. 2021, p. 136473.
# of Pages:1
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
Abstract/Contents:"High temperatures and drought are major limiting factors for the growth of cool-season turfgrasses. Annual bluegrass (Poa annua) exhibits more severe summer quality decline than creeping bentgrass (Agrostis stolonifera Huds.) on golf courses where they are co-present. It is unclear whether this decline in Poa is attributed more to heat or drought sensitivity. The goal of this study is to better understand the differential physiological responses of Poa to heat and drought and compare it to creeping bentgrass so more efficient management strategies can be developed for golf courses with Poa greens. Creeping bentgrass, and Poa were grown in controlled growth chambers under three treatment conditions: well-watered plants at 22/17 °C (day/night) for 42 days (unstressed control); well-watered plants at 35/30 °C for 42 days (heat stress); and unwatered plants for 21 days at 22/17 °C (drought) followed by 21 days of rewatering to measure post-drought recovery. Visual turf quality (TQ), canopy temperature change, electrolyte leakage (EL), and leaf relative water content (RWC) were measured weekly during the study. Relative to the control, Poa exhibited a greater extent of decline in TQ, increased levels of EL and greater canopy temperature change, compared to creeping bentgrass during the heat stress period. During drought stress Poa had lower RWC, increased EL relative to the control and a higher change in canopy temperature compared to creeping bentgrass. Poa recovered slower than creeping bentgrass during the post-drought recovery period, having relatively lower TQ, higher EL, and increased canopy temperature change. Compared to creeping bentgrass, Poa was more sensitive to heat and drought stress, which may be attributed to its shallower root system resulting in lower RWC, increased canopy temperatures, higher EL, and eventual TQ decline."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Huang, B., S. McBride, S. Rossi, and J. A. Murphy. 2021. Differential physiological responses to heat and drought stress for annual bluegrass and creeping bentgrass. Agron. Abr. p. 136473.
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    Last checked: 03/24/2022
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