Full TGIF Record # 269832
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Web URL(s):https://archive.lib.msu.edu/tic/its/articles/1974sup15b.pdf
    Last checked: 03/15/2016
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Publication Type:
i
Report
Content Type:Abstract or summary only
Author(s):Wilkinson, J. F.; Beard, J. B.
Author Affiliation:Michigan State University
Title:Morphological responses of Poa pratensis and Festuca rubra to reduced light intensity
Section:Turfgrass environment
Other records with the "Turfgrass environment" Section
Meeting Info.:Blacksburg, Virginia: June 19-21, 1973
Source:Abstracts of Papers Presented at the Second International Turfgrass Research Conference. 1973, p. 15-16.
# of Pages:2
Publishing Information:Blacksburg, Virginia: [International Turfgrass Society]
Keywords:TIC Keywords: Clipping weight; Comparisons; Cultivar evaluation; Cultivar variation; Festuca rubra; Festuca rubra subsp. rubra; Light intensity; Morphological responses; Poa pratensis; Shade assessment
Cultivar Names:Merion; Pennlawn
Abstract/Contents:"Red fescue is well adapted to shade. Kentucky bluegrass requires full sunlight for adequate growth. The objective was to characterize the morphological responses of the two species to reduced light intensity. Merion Kentucky bluegrass and Pennlawn red fescue were grown under light intensities of 250, 500, 1000, 2000, and 4000 ft-c. established in separate growth chambers. Light quality, soil moisture, and soil temperature were standardized between chambers. Plants were clipped at 5 cm weekly for 14 weeks. Prior to clipping, leaf length, width, and angle were determined. Leaf length of both species increased with decreasing light intensity to 1000 ft-c. Length was lower at 500 and 250 ft-c. than at 1000 ft-c. Both species had narrower leaves with each increment of reduced light. Leaf angle was measured on individually grown plants. While both species displayed horizontal growth at high light intensities, red fescue remained horizontal under low light, while Kentucky bluegrass exhibited a vertical growth habit. Fresh and dry weight, percent moisture, leaf area, and chlorophyll content were determined after clipping. Both species responded similarly. Clipping weights decreased, percent moisture increased, clipping leaf area (cm2) decreased, and chlorophyll/dm2 decreased as the light intensity was lowered. Red fescue did not out perform Kentucky bluegrass under low light intensity in any of the above categories. Following the final clipping, plant shoots and roots were separated. Shoot and root production decreased under lower light intensities. However, red fescue produced greater weights at 250 and 500 ft-c., while Kentucky bluegrass was superior at 2000 and 4000 ft-c. Kentucky bluegrass produced less leaf area, fewer shoots/cm2, and fewer tillers/plant with each increment of lower light, while red fescue produced equal numbers in these categories through 500 ft-c. The superiority of red fescue under shade is often related to the loss of Kentucky bluegrass due to disease infestation. No disease was observed throughout this study. Although disease resistance plays a role in the shade adaptation of red fescue, other shade adaptive mechanisms are also involved."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wilkinson, J. F., and J. B. Beard. 1973. Morphological responses of Poa pratensis and Festuca rubra to reduced light intensity. Int. Turfgrass Soc. Annexe - Tech. Pap. p. 15-16.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=269832
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https://archive.lib.msu.edu/tic/its/articles/1974sup15b.pdf
    Last checked: 03/15/2016
    Requires: PDF Reader
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