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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/1990/24841,%20U%20Minnesota,%20White.PDF
Last checked: 12/09/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | White, Donald B.; Watson, James; Ascher, Peter; Kaerwer, Howard; Johnson, Paul; Ruser, Karl |
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| Author Affiliation: | White: Principal Investigator and Professor; Ascher: Cooperator and Professor; Johnson: Cooperator and Graduate Assistant; Ruser: Cooperator and Project Scientist, Dept. of Horticultural Science, University of Minnesota; Watson: Cooperator and Vice President, The Toro Company, Inc.; and Kaerwer: Cooperator and Research Director, Retired, Northrup King Co., Inc. |
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| Monograph Title: | Improvement of Poa annua for Golf Turf: [1990 Annual Progress Report], 1990. |
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| Publishing Information: | [St. Paul, Minnesota]: Department of Horticultural Science, The University of Minnesota |
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| # of Pages: | 29 |
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| Collation: | [29] pp. |
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| Abstract/Contents: | "Approximately 1500 individual accessions / selections have been maintained and propagated for field evaluation. The 8 prime selections under evaluation and consideration for introduction all performed well over the difficult winter of 1990. A total of 101 new accessions from 25 locations were integrated into the germplasm pool of the project. Poa annua selections #117 (10-C) and #184 (16-B) received the highest ratings over winter. Poa annua #117 (10-C), #493 (NY-12), #42 (3-A) and Poa supina #391 (29-F) exhibited excellent flowering habits this spring. Several new selections have been identified for the next cycle of evaluation for introduction. New evaluation plantings under close mowing were established at the University of Minnesota, 9 golf courses around the country and at 3 Universities. Work has been completed on improving and adapting a mist technique to regulate pollen shed and assist emasculation to facilitate our ability to accomplish specific crosses. Work on improving an excised stem technique was completed and applied to practice. Fructose improved seed production and uniformity compared to sucrose; contrary to other work, no biocide is required and seed matures in 15 days after pollination with the stems maintained in the solution. Approximately 75 crosses were completed with the 8 selections; 40 additional crosses were made to incorporate and combine desirable characteristics. 50 self pollinations were completed in a continuing effort to ascertain heritability of specific characteristics. Several successful interspecific crosses between Poa annua and Poa supina were accomplished using mist and excised stem techniques. Plants resulting from seed of these crosses are currently under evaluation. These are the first interspecific crosses we have been able to accomplish. In the spring, a field seed production trial was established at the University of Minnesota to evaluate seed production potential of the 8 advanced selections. A seed production trial of 4,000 plants, 500 each of the 8 advanced selections, was space planted on November 9 and 10 on Pickseed West land in Tangent Oregon. The primary objectives of this planting are: 1) to assess the seed production capabilities of each selection under supervision of a commercial seed grower; 2) to compare differences in seed production between materials; and 3) to produce a supply of breeders seed that can be used for increase. It is planned that all current studies will continue. Collection of new materials and selective crossing will continue. Strong emphasis will focus on the seed production aspects with the 8 advanced materials." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related summary article "Improvement of Poa annua for golf turf" 1990 Annual Turfgrass Research Report [USGA/GCSAA], 1990, pp. 13-14, R=24841. R=24841 |
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| Note: | "Progress Report # 7"
"November 1990"
"Project: Biology and Utilization of Turfgrasses"
Pictures, color |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
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Last checked: 12/09/2013
Requires: PDF Reader |
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