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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/1995/Turfgrass/31051,%20Ok State, Taliaferro.PDF
Last checked: 11/11/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | Taliaferro, C. M.; Baird, J. H.; Martin, D. L.; Anderson, J. A.; Anderson, M. P. |
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| Author Affiliation: | Taliaferro: Plant Breeder and Geneticist; Baird: Turfgrass Science; Martin: Turfgrass Science & Extension; Anderson, J. A.: Plant Stress Physiologist; and Anderson, M. P.: Plant Molecular Biology |
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| Monograph Title: | Breeding and Evaluation of Seeded Cold-Tolerant Bermudagrass Varieties and Bermudagrass Varieties for Golf Course Putting Greens: [1995 Annual Research Report], 1995. |
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| Publishing Information: | [Stillwater, Oklahoma]: Oklahoma Agricultural Experiment Station, Oklahoma State University |
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| # of Pages: | 41 |
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| Collation: | 41 pp. |
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| Abstract/Contents: | "The objectives of the Oklahoma State University bermudagrass breeding program are to develop improved seed-and vegetatively-propagated varieties for use in the transition zone and southern states. Two broad genetic-base C. dactylon populations, one derived from cold-tolerant relatively infertile germplasm, the other from cold-sensitive highly fertile germplasm have been developed using phenotypic recurrent selection. Selection within the cold-tolerant population C3fer4tex has been for increased seed production potential and finer texture. Selection within the cold-sensitive population (C3ct) has been for increased freeze tolerance. Cumulative performance data indicate synthetic varieties from the cold-hardy breeding population to be well adapted to the U.S. transition zone with turf quality competitive with other seeded bermudagrasses. Commercial release of one or more synthetic varieties is planned. Field evaluations are underway to define optimum cultural management strategies for the varieties. African bermudagrass, C. transvaalensis, has extensive phenotypic variation within the species for many traits influencing adaptation and turf quality. A genetic population is now being studied that will permit estimation of genetic parameters for traits of interest. Field evaluation of selected African genotypes indicate their major weaknesses to be instability of turf quality and light-green color. In tropical environments the African elections generally maintain good to excellent putting-green turf in winter, but dramatically decline in quality during summer. Variation in summer performance of genotypes has been documented indicating potential for improvement. As a result of its weaknesses, African bermudagrass is now being evaluated for potential use on tees and/or fairways. Furthermore, African genotypes having demonstrated the best overall performance are being used extensively as parents in crosses with C. dactylon to produce large F1 progeny populations. Several selections from these populations are performing well in field tests. In 1995, African bermudagrass tolerance to herbicides and response to fertility were more clearly defined. Alternations in protein synthesis associated with cold acclimation (CA) have been documented in Midiron and Tifgreen bermudagrasses. Acidic (pi's of ca. 5 to 6) proteins of ca. 34 kD were diminished in crowns of both varieties following CA. Both varieties synthesized cold-regulated (COR) proteins of several size ranges, including ca. 14 to 15 kD, 20 to 28 kD, 32 to 37 kD, and 45 to 55 kD, in association with CA. Midiron crowns synthesized low molecular weight (MW) (ca. 20-28 kD) basic (pi's of ca. 7 to 9) COR proteins in greater numbers and amounts, and intermediate MW (ca. 32 to 37 kD) acidic (pi's of ca. 4 to 6) COR proteins in greater amounts than Tifgreen crowns. Peptide sequence analysis of a prominent 27 kD protein from Midiron crowns indicates it to likely be a chitinase." |
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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 evaluation of cold-tolerant bermudagrass varieties for golf courses" 1995 Turfgrass and Environmental Research Summary, 1995, p. 12-14, R=31051. R=31051 |
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| Note: | Also appears as pp. 00380-00421 in the USGA Turfgrass Research Committee Reporting Binders for 1995.
"For the Period 1 November 1994 - 31 October 1995"
"Not for Publication"
Pictures, color
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
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| Web URL(s):
http://archive.lib.msu.edu/tic/rpr/1995/Turfgrass/31051,%20Ok State, Taliaferro.PDF
Last checked: 11/11/2013
Requires: PDF Reader |
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