Full TGIF Record # 325044
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Web URL(s):https://scisoc.confex.com/scisoc/2022am/meetingapp.cgi/Paper/143285
    Last checked: 02/02/2023
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Publication Type:
Content Type:Abstract or Summary only
Author(s):MacPherson, Eric
Author Affiliation:Presenting Author
Title:Evaluation of creeping bentgrass (Agrostis stolonifera) shade tolerance under simulated shade
Section:Turfgrass Physiology and Abiotic Stress Oral (includes student competition)
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C05 turfgrass science
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Meeting Info.:Baltimore, Maryland: November 6-9, 2022
Source:ASA, CSSA, SSSA International Annual Meeting. 2022, p. 143285.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Abstract/Contents:"Shade stress and shade avoidance responses (SAR) are a major problem for plants grown under foliar shade. Creeping bentgrass (Agrostis stolonifera) is a popular turfgrass grown on golf courses under a wide variety of growing conditions including foliar shade. However, shade tolerance and shade avoidance are still understudied in creeping bentgrass, and which traits of interest are important in shade tolerance are still ambiguous. The objective of this study was to distinguish what morphological traits are important to identify shade tolerance in creeping bentgrass. If certain morphological traits could be identified that reflected shade tolerance, these could be used to develop shade tolerant cultivars. Additionally, this study also aimed to evaluate 31 common commercial cultivars and experimental selections of creeping bentgrass. The study was carried out in a greenhouse under both full sun and simulated foliar shade. Foliar shade was accomplished using a photoselective filter, which decreased light intensity by ~50% and reduced the red to far-red ratio (R/FR) by ~33%. Several traits were monitored including height, tiller count, biomass, and total chlorophyll concentrations. Of the traits evaluated, height and chlorophyll were significantly affected by shade (p = 0.0082, p = 1.079e-07, ANOVA), which is indicative of shade avoidance characteristics. L-93XD demonstrated a negative percent change in height indicating a strong shade tolerance for this trait. A positive shade tolerant chlorophyll concentration was seen in the cultivars, Penncross, Matchplay, MacDonald, and Luminary. Cultivars that exhibited both smaller heights and increased chlorophyll concentrations when grown in the shade are cultivars that are most adapted for shade, and both traits should be focused on. L-93XD showed promise in both categories. Future creeping bentgrass shade studies should prioritize height and chlorophyll concentration measurements. These morphological traits are also good phenotypic selectors in improving creeping bentgrass to become more shade tolerant through directed breeding."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
MacPherson, E. 2022. Evaluation of creeping bentgrass (Agrostis stolonifera) shade tolerance under simulated shade. Agron. Abr. p. 143285.
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    Last checked: 02/02/2023
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