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| Web URL(s): | https://stri.lib.msu.edu/vol69-1993/sptri93069111.html
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Notes: Available to TGIF and STRI users
https://stri.lib.msu.edu/vol69-1993/pdf/sptri93069111.pdf
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| Access Restriction: | Certain MSU-hosted archive URLs may be restricted to legacy database members. |
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| Publication Type:
| Refereed |
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| Author(s): | Thorogood, D. |
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| Author Affiliation: | AFRC Institute of Grassland and Environmental Research, Welsh Plant Breeding Station, Plas Gogerddan, Aberystwyth, Dyfed |
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| Title: | Temporal changes in turfgrass colour in a range of Lolium perenne L. cultivars and breeding lines |
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| Source: | Journal of the Sports Turf Research Institute. Vol. 69, June 1993, p. 111-119. |
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| Publishing Information: | Bingley, England: Sports Turf Research Institute |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Cultivar evaluation; Color; Cultivars; Clippings; Genetics; Breeding; Lolium perenne
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| Abstract/Contents: | "Overall turf colour and turf colour change with time is determinded by the proportions of live (green) senescing (yellow) and dead (brown) vegetative material. It is therefore intrinsically associated with turf quality reflecting the overall health of the turf. In an intensively managed turf, new leaf growth is constantly removed by mowing, so that any turf colour changes relate to the increase or decrease in the proportions of senescing and dead vegetative material. Turf colour change is controlled by: [1] genetical factors inherent in the sown cultivar which control the growth cycle of individual plant parts and; [2] how these genetical factors interact with a whole array of environmental variables. Perceived turf colour can be measured by the use of a tri-stimulus chroma meter and recorded numerically so that colour scores can be compared over a period of time. In an initial laboratory experiment, colour changes were monitored during the senescence of fresh non-senescent leaf clippings taken from five contrasting amenity perennial ryegrass (Lolium perenne) genotypes. Hue angle (H degrees) was found to be the most appropriate colour parameter to measure discolouration as it decreased linearly with increased senescence in all cultivars. Synthetic populations were produced in a breeding programme based primarily on phenotypic selection of individual plants capable of maintaining high H degrees under a range of conditions encountered in a turf environment. Small plot assessments of the breeding lines grown at two contrasting nitrogen fertiliser regimes over an entire season showed that H degrees stability was achieved when compared with control cultivars (`Elka', `Gator', `Lorina', `Barclay', `SR4200', `Aberystwyth S.23') both in the winter months and whenever nitrogen was limiting. There was also some evidence of stabilty under drought conditions. Maintenance of a green colour over such a range of conditions is aesthetically desirable but more importantly may have economic significance in terms of the use of limited resources such as fertiliser and water." |
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| Language: | English |
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| References: | 8 |
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| Note: | Figures
Table |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Thorogood, D. 1993. Temporal changes in turfgrass colour in a range of Lolium perenne L. cultivars and breeding lines. J. Sports Turf Res. Inst. 69:p. 111-119. |
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| Web URL(s):
https://stri.lib.msu.edu/vol69-1993/sptri93069111.html
Last checked: 02/2003
Notes: Available to TGIF and STRI users
https://stri.lib.msu.edu/vol69-1993/pdf/sptri93069111.pdf
Last checked: 02/2003
Requires: PDF Reader
Notes: Available to TGIF and STRI users |
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MSU catalog number: SB 433 .A1 S63 |
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