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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/1990/24856, Texas A&M, Engelke, zoysia.PDF
Last checked: 03/22/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | Engelke, M. C.; White, Richard H.; Ruemmele, Bridget A.; Morton, S. J. |
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| Author Affiliation: | Engelke: Principal Investigator and Associate Professor, Turfgrass Breeding and Genetics; White: Technical Support and Assistant Research Scientist, Turfgrass Physiology; Ruemmele: Technical Support and Postdoctoral Research Associate, Turfgrass Breeding and Genetics; and Morton: Research Assistant, Turfgrass Physiology |
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| Monograph Title: | Breeding and Development of Zoysiagrass: 1990 Annual Progress Report, 1990. |
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| Publishing Information: | Dallas, Texas: Texas Agricultural Experiment Station, Texas A&M University System |
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| # of Pages: | 46 |
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| Collation: | [1], iii, 42 pp. |
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| Abstract/Contents: | "A major redirection within the zoysiagrass program occurred in 1989 and 1990 with the addition of Dr. Richard H. White, as Assistant Research Scientist specializing in turfgrass physiology, and Dr. Bridget Ruemmele in turfgrass breeding. The combined efforts of the group have been directed specifically to the assessment of germplasm relative to stress tolerance mechanisms and the specific hybridization of selected accessions in order to study the relative heritabilities of such traits and to combine multiple desirable traits into new varieties. Considerable progress has been made in the area of developing seeded zoysiagrasses. Maintenance of the zoysiagrass germplasm nurseries will receive considerable attention these next few years due to the reduction in turfgrass research efforts on the part of the United States Department of Agriculture. Due to Federal budget problems, the Oriental zoysiagrass collection is being preserved vegetatively at TAES-Dallas, however no funds are available to complete the documentation, nor to develop the CORE collection for entry into the Plant Introduction (PI) System, nor for increase and distribution. Regardless, vegetative maintenance and production of these accessions, as well as newly developed cultivars has become streamlined and more expedient with the use of thin-layer sod production techniques developed here. Once entered into the PI system the CORE collection will be available to requesting agencies as prescribed by the rules and regulations of the USGA Plant Introduction system. Numerous elite accessions of zoysiagrasses have been evaluated for water-use requirements under field conditions using the Linear Gradient Irrigation System (LGIS). Major separations have occurred for plant growth response and survival among zoysiagrass cultivars and accessions. Of the commercial cultivars, El Toro and Belair required less water than Meyer or FC13521. A number of the DALZ lines have remarkable potential to recover from drought stress. The Turfgrass Root Investigation Facility (TRIF) has provided considerable information on the rooting characters of many of the elite lines. The shade trials continue with marked separation of plant materials in their ability to persist and grow under limited light. The combined testing facilities suggest considerable genetic variability exist within the elite accessions (DALZ lines) as well as the Oriental collection. Of greatest promise is the variation noted for water-use, canopy temperature, growth response, growth habit, texture and turf quality. Regional trials suggest good variability exists among the lines under evaluation for cold hardiness, rate of spread, texture and turf quality. Results from 11 regional field trials continue to provide excellent information on area of adaption and potential utility of the elite accessions under development. Regional field trials are located in; Missouri, Illinois, Arizona, California, Oklahoma and Florida as well as several locations in Texas. Electrophoresis has been completed on 23 DALZ lines by Dr. Lin Wu, University of California - Davis. DNA finger printing has been completed by Dr. Lloyd Callahan, and Dr. Peter Gresshoff (University of Tennessee) on 5 elite lines in comparison to Meyer zoysiagrass. The National Turf Evaluation Program will sponsor a Zoysiagrass trial to be planted in the spring of 1991. A total of 23 entries including 4 commercial varieties will likely be included, and that approximately 30 locations across the United States will participate. This project will enter approximately 10 elite accessions. Data from these National test are invaluable in defining adaptive characters as well as potential utilities of newly developed varieties. TAES-Dallas will assume the responsibility for increasing all of the germplasm of these trials, with distribution anticipated in mid-May 1991. Numerous selections have been identified in the Oriental Collection for turf quality, color retention, greenup, drought hardiness, seed production potential, and numerous desirable agronomic traits. Approximately 1500 progeny are under field evaluation for turf performance and seed production potential. Heritability studies and parent-progeny populations are included for seed production, drought resistance, root characters and general turf performance." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related summary article, "Breeding and development of zoysiagrass", 1990 Annual Turfgrass REsearch Report [USGA/GCSAA], 1990, pp. 26-27, R=24856. R=24856 |
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| Note: | Includes index; p. [1]
"Jointly sponsored by: The United States Golf Association and Texas Agricultural Experiment Station"
"1 November 1990"
"Volume 90-2Z"
"1990 Annual Zoysiagrass Progress Report"
"Research Period: 1 November 1989 to 1 November 1990"
"USGA Zoysia Fall 1990"
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