Full TGIF Record # 252626
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Web URL(s):http://www.sciencedirect.com/science/article/pii/S0304423812000854
    Last checked: 01/05/2015
    Access conditions: Item is within a limited-access website
Publication Type:
Author(s):Gao, Yang; Li, Deying
Author Affiliation:Department of Plant Sciences, North Dakota State University, Fargo, ND
Title:Detecting salinity stress in tall fescue based on single leaf spectrum
Source:Scientia Horticulturae. Vol. 138, May 1 2012, p. 159-164.
# of Pages:6
Publishing Information:Amsterdam, Elsevier
Keywords:TIC Keywords: Chlorophyll; Comparisons; Cultivar evaluation; Evapotranspiration rate; Festuca arundinacea; Physiological responses; Relative water content; Salinity stress; Salt tolerance; Stress response
Cultivar Names:Tar Heel II; Wolfpack
Abstract/Contents:"Salinity problems are becoming more and more severe in turfgrass management, which can cause physiological stress to turfgrass and deteriorate soil structure. Tall fescue (Festuca arundinacea Schreb.) is a cool-season turfgrass with moderate to high tolerance to salinity. The objective of this study was to compare indices of single leaf spectrum and direct physiological parameters in their ability to detect tall fescue responses to salinity stress. Two tall fescue varieties, Tar Heel II (salt tolerant) and Wolfpack (salt sensitive) were established in washed silica sand. At the 4-leaf stage, salinity treatment was applied by adding NaCl and CaCl2 (1:1 w/w) to the Hoagland cultural solution in 16 g L-1, and the control received Hoagland solution only. Relative water content (RWC), total chlorophyll (Chl) content, quantum yield of photosystem II, transpiration rate, and stomatal conductance of the 4th leaf decreased in the salinity treated plants compared to the control, with RWC and Chl showed more sensitivity. At least three indices calculated based on single leaf reflectance spectrum (350-1000 nm), modified simple ratio vegetation index (mSR750/705), modified normalized difference vegetation index (mND750/705), and stress index (SI710/760), were sensitive in differentiation of salinity stress from untreated plants. Three indices also were significantly correlated to the two major physiological parameters. Correlation coefficients of RWC to mSR750/705, mND750/705, and SI710/760 were 0.64, 0.60, and -0.52 on average. Correlation coefficients of Chl to mSR750/705, mND750/705, and SI710/760 were 0.78, 0.79, and -0.68 on average."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gao, Y., and D. Li. 2012. Detecting salinity stress in tall fescue based on single leaf spectrum. Scientia Horticulturae. 138:p. 159-164.
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DOI: 10.1016/j.scienta.2012.02.018
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    Last checked: 01/05/2015
    Access conditions: Item is within a limited-access website
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