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DOI:10.21273/JASHS.128.1.0036
Web URL(s):https://journals.ashs.org/jashs/view/journals/jashs/128/1/article-p36.xml?rskey=TgU1Ft
    Last checked: 11/19/2019
    Requires: PDF Reader
Publication Type:
i
Refereed
Author(s):Wang, Zhaolong; Huang, Bingru; Xu, Qingzhang
Author Affiliation:Wang: Postdoctoral Research Associate, Department of Plant Pathology, Rutgers University, New Brunswick, New Jersey; Huang: Associate Professor, Department of Plant Pathology, Rutgers University, New Brunswick, New Jersey; Xu: Research Associate, Department of Plant Pathology, Rutgers University, New Brunswick, New Jersey
Title:Effects of Abscisic acid on drought responses of Kentucky bluegrass
Source:Journal of The American Society for Horticultural Science. Vol. 128, No. 1, January 2003, p. 36-41.
Publishing Information:Alexandria, VA: American Society for Horticultural Science
# of Pages:6
Keywords:TIC Keywords: Poa pratensis; Drought resistance; Drought stress; Abscisic acid; Irrigation; Leaf water potential; Photosynthesis; Growth regulators; Visual evaluation; Electrolyte leakage; Photochemical efficiency; Turgor; Shoot growth; Osmotic pressure
Cultivar Names:Brilliant; Midnight
Abstract/Contents:"Abscisic acid (ABA) is an important hormone regulating plant response to drought stress. The objective of this study was to investigate effects of exogenous ABA application on turf performance and physiological activites of kentucky bluegrass (Poa pratensis L.) in response to drought stress. Plants of two kentucky bluegrass cultivars, 'Brilliant' (drought susceptible) and 'Midnight' (drought tolerant), were treated with ABA 100 2μ) or water by foliar application and then grown under drought stress (no irrigation) or well-watered (irrigation on alternate days) conditions in a growth chamber. The two cultivars responded similarly to ABA application under both watering regimes. Foliar application of ABA had no effects on turf quality or physiological parameters under well-watered conditions. ABA application, however helped maintain higher turf quality and delayed the quality decline during drought stress, compared to the untreated control. ABA-treated plants exposed to drought stress had higher cell membrane stability, as indicated by less electrolyte leakage of leaves, and higher photochemical efficiency, expressed as Fv/Fm, compared to untreated plants. Leaf water potential was not significantly affected, whereas leaf turgor pressure increased with ABA application after 9 and 12 d of drought. Osmotic adjustment increased with ABA application, and was sustained for a longer period of drought in 'Midnight' than in 'Brilliant'. The results suggested that exogenous ABA application improved turf performance during drought and drought-sensitive and tolerant cultivars of kentucky bluegrass. This positive effect of ABA could be related to increased osmotic adjustment, cell turgor maintenance, and reduced damage to cell membranes and the photosynthetic system."
Language:English
References:50
See Also:Other items relating to: Disasters - Drought
Note:Graphs
Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wang, Z., B. Huang, and Q. Xu. 2003. Effects of Abscisic acid on drought responses of Kentucky bluegrass. J. Am. Soc. Hortic. Sci. 128(1):p. 36-41.
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DOI: 10.21273/JASHS.128.1.0036
Web URL(s):
https://journals.ashs.org/jashs/view/journals/jashs/128/1/article-p36.xml?rskey=TgU1Ft
    Last checked: 11/19/2019
    Requires: PDF Reader
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MSU catalog number: SB 1 .A46
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