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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/1994/35126,%20Ok%20State,%20Taliaferro.PDF
Last checked: 11/13/2013
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.; Martin, D. L.; Anderson, J. A.; Baird, Jim |
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| Author Affiliation: | Taliaferro: Plant Breeder and Geneticist; Martin: Turfgrass Science & Extension; Anderson: Plant Stress Physiologist; and Baird: Turfgrass Science |
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| Monograph Title: | Breeding and Evaluation of Seeded Cold-Tolerant Bermudagrass Varieties and Bermudagrass Varieties for Golf Course Putting Greens: [1994 Annual Progress Report], 1994. |
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| Publishing Information: | [Stillwater, Oklahoma]: Oklahoma Agricultural Experiment Station, Oklahoma State University |
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| # of Pages: | 25 |
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| Collation: | 25 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. Phenotypic recurrent selection (PRS) is continuing in two broad genetic base C. dactylon populations, one derived from cold-tolerant relatively infertile germplasm, the other from cold-sensitive highly fertile germplasm. Selection within the cold-tolerant population, C3fer3tex, has been for increased seed production potential and finer texture. Selection within the cold-sensitive (C2ct) has been for increased freeze tolerance. An additional cycle of selection was completed within each of the populations over the past year. The C3fer3ex population and synthetic varieties derived from it have demonstrated good cold tolerance and turf quality in multienvironment tests. The seeded experimental OKS 91-11 has performed well in the 1992 NTEP bermudagrass test. Scale-up production has been initiated for two synthetic varieties in preparation for commercialization. Research with African bermudagrass. C. transvaalensis, has demonstrated extensive phenotypic variation within the species for many traits influencing adaptation and turf quality. Development of a genetic population was completed in 1994 that will permit estimation of genetic parameters within the species. 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 selections generally maintain good to excellent putting-green turf in winter, but dramatically decline in quality during summer. The decline is less severe in temperate environments. The potential for genetic improvement within the species is indicated by the substantial variation that exists. Alterations 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" 1994 Turfgrass Research Summary [USGA], 1994, p. 12-13, R=35126. R=35126 |
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| Note: | Also appears as pp. 00077-00102 in the USGA Turfgrass Research Committee Reporting Binders for 1994.
"For the Period 1 November 1993 - 31 October 1994"
Tables |
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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/1994/35126,%20Ok%20State,%20Taliaferro.PDF
Last checked: 11/13/2013
Requires: PDF Reader |
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