Full TGIF Record # 28139
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Web URL(s):https://archive.lib.msu.edu/tic/its/articles/1993jou729.pdf
    Last checked: 08/04/2010
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Publication Type:
i
Refereed
Author(s):Thorogood, D.; Bowling, P. J.; Jones, R. M.
Author Affiliation:AFRC/Inst., UK; Nottingham Trent Univ., UK
Title:Assessment of turf colour change in Lolium perenne L. cultivars and lines
Meeting Info.:7th International Turfgrass Society Research Conference, Palm Beach, FL, USA, 18-24 July, 1993
Source:International Turfgrass Society Research Journal. Vol. 7, 1993, p. 729-735.
Publishing Information:Overland Park, KS: INTERTEC Publishing Corp.
# of Pages:7
Keywords:TIC Keywords: Color evaluation; Color retention; Cultivar evaluation; Cultivar improvement; Discoloration; Lolium perenne; Maintenance practices; Senescence
Abstract/Contents:"Perceived turf colour can be measured by the use of a tri-stimulus chromameter and recorded numerically so that colour scores can be compared over a period of time. This enables germplasm to be assessed for colour retention properties. Turf discoloration results primarily from the increased proportion of senescent vegetative material. An initial laboratory experiment measured colour changes of senescing leaf clippings taken from five contrasting amenity Lolium perenne (perennial ryegrass) genotypes, grown as spaced plants in the field. They were selected at random from the cultivars Elka, Gator Lorina, Barclay and SR4200 and their senescence was followed over an eleven day period. The colour parameters Value (L*), a*, b*, Chroma (C*) and Hue Angle (Hdegree) were measured. H was found to be the most appropriate to measure discoloration as it decreased linearly with increased senescence in all varieties. A breeding programme produced synthetic populations based primarily on phenotypic selection of individual plants capable of maintaining high H under a range of conditions encountered in a turf environment. Small plot assessments of the lines grown at two contrasting nitrogen fertiliser regimes over an entire season showed that H stability was achieved when compared to control varieties (Elka, Gator, Lorina, Barclay, SR4200, Aberystwyth S23) both in the winter months and whenever nitrogen was limiting. There was also some evidence of stability under drought. Maintenance of a green colour over such a range of conditions may have economic significance in terms of the use of limited resources such as fertiliser and water."
Language:English
References:5
Note:"Chapter 103"
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Thorogood, D., P. J. Bowling, and R. M. Jones. 1993. Assessment of turf colour change in Lolium perenne L. cultivars and lines. Int. Turfgrass Soc. Res. J. 7:p. 729-735.
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https://archive.lib.msu.edu/tic/its/articles/1993jou729.pdf
    Last checked: 08/04/2010
    Requires: PDF Reader
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MSU catalog number: SB 433 .I522 v.7
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